DEPARTMENT OF LICENSING AND REGULATORY AFFAIRS  
DIRECTOR'S OFFICE  
CONSTRUCTION CODE  
(By authority conferred on the director of the department of licensing and regulatory  
affairs by section 4 of the Stille-DeRossett-Hale single state construction code act, 1972  
PA 230, MCL 125.1504, and Executive Reorganization Order Nos. 2003-1, 2008-4, and  
2011-4, MCL 445.2011, 445.2025, and 445.2030)  
PART 4. BUILDING CODE  
R 408.30401 Applicable code.  
Rule 401. The provisions of the international building code, 2021 edition, including  
appendices F, G, and H, except for sections 104.2, 104.3, 104.8, 104.8.1, 104.10, 105.3,  
105.3.1, 105.3.2, 105.6, 109.2 to 109.6, 111.2, 111.3, 113.2, 113.3, 113.4, 114.1, 114.2,  
114.3, 114.4, 115.1 to 115.4, 423.5, 423.5.1, 423.5.2, 903.2.8.4, 2902 to 2902.6, Table  
2902.1, section 3005.5, the definition of “agricultural building” in section 202, the  
definition of "recreational vehicle" in Appendix G, and IECC- 2021, IEBC- 2021, IMC-  
2021, IPC- 2021, IPSDC- 2021, and NFPA 70- 2023, listed in chapter 35, govern the  
construction, alteration, relocation, demolition, use, and occupancy of buildings and  
structures, and, with exceptions noted, the international building code is adopted by  
reference in these rules. All references to the International Building Code, International  
Residential Code, International Energy Conservation Code, National Electrical Code,  
International Existing Building Code, International Mechanical Code, and International  
Plumbing Code mean the Michigan Building Code, Michigan Residential Code,  
Michigan Energy Code, Michigan Electrical Code, Michigan Rehabilitation Code for  
Existing Buildings, Michigan Mechanical Code, and Michigan Plumbing Code,  
respectively. The code is available for inspection and purchase at the Michigan  
Department of Licensing and Regulatory Affairs, Bureau of Construction Codes, 611  
West Ottawa Street, First Floor Ottawa Building Lansing, Michigan 48933. The code  
may be purchased from the International Code Council, through the bureau’s website at  
www.michigan.gov/bcc, at a cost as of the time of adoption of these amendatory rules of  
$144.00.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 1998 AACS;  
2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS; 2017 AACS; 2024 MR  
23, Eff. April 9, 2025.  
R 408.30401a Rescinded.  
History:2008 AACS; 2024 MR 23, Eff. April 9, 2025.  
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R 408.30402 General.  
Rule 402. Sections 101.1 and 101.3 of the code are amended to read as follows:  
101.1. Title. These rules shall be known as the Michigan building code, and referred  
to as "the code."  
101.3. Intent. The purpose of the code and the act is to establish the minimum  
requirements to provide a reasonable level of safety, public health, and general welfare  
through structural strength, means of egress facilities, stability, sanitation, adequate light  
and ventilation, energy conservation, and safety to life and property from fire and other  
hazards attributed to the built environment and to provide a reasonable level of safety to  
firefighters and emergency responders during emergency operations. The act takes  
precedence over all provisions of the code.  
History: 1981 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30403 Rescinded.  
History: 1981 AACS; 1985 AACS; 1988 AACS; 1989 AACS; 1995 AACS; 1998-2000 AACS; 2014  
AACS; 2016 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30403a Rescinded.  
History: 1985 AACS; 1992 AACS; 1995 AACS.  
R 408.30404 Rescinded.  
History: 1981 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014  
AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30405 Professional architectural and engineering services.  
Rule 405. Section 107.1 of the code is amended to read as follows:  
107.1. Submittal documents. Construction documents, special inspection and  
structural programs and other data shall be submitted in 1 or more sets with each  
application for a permit. The construction documents shall be prepared by, or under  
the direct supervision of, a registered design professional when required by 1980 PA  
299, MCL 339.101 to 339.2919. Where special conditions exist, the building official  
is authorized to require additional construction documents to be prepared by a  
registered design professional.  
History: 1981 AACS; 1985 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2008 AACS; 2010  
AACS.  
R 408.30406 Building Official Right of Entry.  
Rule 406. Section 104.6 of the code is added to read as follows:  
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104.6. Right of entry. If a structure or premises is unoccupied, the building official  
shall first make a reasonable effort to locate the owner or other person having charge or  
control of the structure or premises and request entry. If a building or premises are  
occupied, the building official shall present credentials to the occupant and request entry.  
If entry is refused, the building official shall have recourse to the remedies provided by  
law to secure entry. When a building official has first obtained a proper inspection  
warrant or other remedy provided by law to secure entry, the owner, owner’s authorized  
agent or occupant, or person having charge, care, or control of the building or premises  
shall not fail or neglect, after a proper request is made as provided in this rule, to allow  
the building official prompt entry into the building or premises to inspect or examine the  
building or premises under this code.  
History: 1981 AACS; 1988 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2024 MR 23, Eff. April  
9, 2025.  
R 408.30406a Required.  
Rule 406a. Section 105.1 of the code is amended to read as follows:  
105.1. Required. Owners or their authorized agents shall obtain the required permit  
from the building official before undertaking any construction, enlargement, alteration,  
repair, relocation, demolition, change of occupancy, erection, installation, enlargement,  
alteration, repair, removal, conversion, or replacement of electrical, gas, mechanical,  
plumbing, or solar panel systems regulated by the code.  
History: 2024 MR 23, Eff. April 9, 2025.  
R 408.30407 Rescinded.  
History: 1981 AACS; 1995 AACS; 1998-2000 AACS.  
R 408.30408 Rescinded.  
History: 1981 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2024 MR  
23, Eff. April 9, 2025.  
R 408.30409 Permit.  
Rule 409. Section 105.2 of the code is amended to read as follows:  
105.2. Work exempts from permit. Exemptions from permit requirements of the  
code shall not be deemed to grant authorization for work to be done in any manner in  
violation of the provisions of the code or other laws or ordinances of this jurisdiction.  
Permits shall not be required for the following:  
(a) Building permits shall not be required for the following:  
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(i) One-story detached accessory structures used as tool and storage sheds,  
playhouses and similar uses, if the floor area does not exceed 120 square feet, 11 square  
meters.  
(ii) A fence that is not more than 7 feet, 2-meters-134-millimeters, high.  
(iii) Oil derricks.  
(iv) A retaining wall that is not more than 4 feet, 1,219 millimeters, in height  
measured from the bottom of the footing to the top of the wall, unless supporting a  
surcharge or impounding class I, II, or III-A liquids.  
(v) A water tank supported directly on grade if the capacity is not greater than 5,000  
gallons, 18,925 liters, and the ratio of height to diameter or width is not greater than 2 to  
1.  
(vi) A sidewalk and driveway not more than 30 inches, 762 millimeters, above  
adjacent grade and not over any basement or story below and are not part of an accessible  
route.  
(vii) Painting, papering, tiling, carpeting, cabinets, countertops, and similar finish  
work.  
(viii) Temporary motion picture, television, and theater stage sets and scenery.  
(ix) Prefabricated swimming pools accessory to a group R-3 occupancy, as  
applicable in section 101.2, that are less than 24 inches, 610 millimeters, deep, are not  
greater than 5,000 gallons, 18,925 liters, and are installed entirely above ground.  
(x) Shade cloth structures constructed for nursery or agricultural purposes, not  
including service systems.  
(xi) Swings and other playground equipment accessory to detached 1- and 2-family  
dwellings.  
(xii) Window awnings in group R-3 and U occupancies, supported by an exterior  
wall that do not project more than 54 inches, 1,372 millimeters, from the exterior wall  
and do not require additional support, as applicable in section 101.2 and group U  
occupancies.  
(xiii) Nonfixed and movable fixtures, cases, racks, counters, and partitions not over  
5 feet 9 inches, 1,753 millimeters, in height.  
(b) Electrical permits shall not be required, in accordance with R 408.30801 to R  
408.30880, for the following:  
(i) Repairs and maintenance: Minor repair work, including the replacement of  
lamps or the connection of approved portable electrical equipment to approved  
permanently installed receptacles.  
(ii) Radio and television transmitting stations: The provisions of the code do not  
apply to electrical equipment used for radio and television transmissions, but they do  
apply to equipment and wiring for power supply and to the installation of towers and  
antennas.  
(iii) Temporary testing systems: A permit is not required for the installation of any  
temporary system required for the testing or servicing of electrical equipment or  
apparatus.  
(c) Mechanical permits shall not be required for any of the following:  
(i) A portable gas heating appliance that has inputs of less than 30,000 Btu’s per  
hour.  
(ii) Portable ventilation appliances and equipment.  
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(iii) Portable cooling unit.  
(iv) Steam, hot water, or chilled water piping within heating or cooling equipment  
or appliances regulated by the code.  
(v) Replacement of a minor part that does not alter the approval of equipment or an  
appliance or make such equipment or appliance unsafe.  
(vi) A portable evaporative cooler.  
(vii) Self-contained refrigeration systems that contain 10 pounds, 4.5 kilograms, or  
less of refrigerant, or that are actuated by motors of 1 horsepower, 0.75 kilowatts, or less.  
(viii) Portable fuel cell appliances that are not connected to a fixed piping system  
and are not interconnected to a power grid.  
(ix) An oil burner that does not require connection to a flue, such as an oil stove and  
a heater equipped with a wick.  
(x) A portable gas burner that has inputs of less than 30,000 Btu’s per hour.  
(xi) When changing or relocating a gas meter or regulator, a permit is not required  
when installing gas piping limited to 10 feet, 3,005 millimeters, in length and not more  
than 6 fittings.  
(xii) When installing geothermal vertical closed loops under the supervision of a  
mechanical contractor licensed in HVAC, as long as the company meets both the  
following:  
(A) Has obtained a certificate of registration as a well drilling contractor under part  
127 of the public health code, 1978 PA 368, MCL 333.12701 to 333.12771.  
(B) Has installed the geothermal vertical closed loops in accordance with the  
department of environment, Great Lakes, and energy’s best practices regarding  
geothermal heat pump closed loops. Exemption from the permit requirements of grant  
authorization for work to be done in violation of the provisions of the code or other laws  
or ordinances of this jurisdiction.  
(d) Plumbing permits shall not be required for either of the following:  
(i) The stopping of leaks in drains, water, soil, waste, or vent pipe. However, if any  
concealed trap, drainpipe, water, soil, waste, or vent pipe becomes defective and it  
becomes necessary to remove and replace the drain or pipe with new material, then the  
work is considered new work and a permit shall be obtained and inspection made as  
provided in the code.  
(ii) The clearing of stoppages or the repairing of leaks in pipes, valves, or fixtures,  
and the removal and reinstallation of water closets, if the repairs do not involve or require  
the replacement or rearrangement of valves, pipes, or fixtures.  
History: 1981 AACS; 1985 AACS; 1992 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2010  
AACS; 2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30410 Rescinded.  
History: 1981 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2024 MR  
23, Eff. April 9, 2025.  
R 408.30411 Rescinded.  
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History: 1979 AC; 1981 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS;  
2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30412 Certificate of use and occupancy.  
Rule 412. Sections 111.2 and 111.2.1 of the code are amended to read as follows:  
111.2. Compliance.  
A change of occupancy shall not be made in any building unless that building  
complies with the requirements of the International Building Code for the use or  
occupancy. Changes of occupancy in a building or portion thereof shall be such that the  
existing building is not less compliant with the provisions of the code than the existing  
building or structure was before the change. Subject to the approval of the code official,  
changes of occupancy shall be permitted without complying with all the requirements of  
the code for the new occupancy, provided that the new occupancy is less hazardous,  
based on life and fire risk, than the existing occupancy.  
111.2.1 Change in the character of use.  
0000- Compliance shall be only as necessary to meet the specific provisions and is  
not intended to require the entire building be brought into compliance.  
History: 1979 AC; 1981 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS;  
2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30413 Rescinded.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1995 AACS; 2010 AACS; 2016 AACS.  
R 408.30414. Barrier free design board.  
Rule 414. Section 113.1 of the code amended to read as follows:  
113.1. Means of appeal.  
Requests for barrier free design exception shall be in accordance with 1966 PA 1,  
MCL 125.1351 to 125.1356.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 2004 AACS; 2008 AACS;  
2010 AACS; 2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30415 Rescinded.  
History: 1979 AC; 1981 AACS.  
R 408.30415a Definitions.  
Rule 415a. The definitions of act; attic, uninhabitable with limited storage; cold  
weather months; and attic, uninhabitable without storage are added, and the definitions of  
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occupiable space and registered design professional in section 202 of the code are  
amended to read as follows:  
202. Definitions.  
(a) “Act” means the Stille-DeRossett-Hale single state construction code act, 1972  
PA 230, MCL 125.1501 to 125.1531  
(b) “Attic, uninhabitable with limited storage” means an uninhabitable attic with  
limited storage where the minimum clear height between joists and rafters is 42 inches or  
greater; 42 inches high by 24 inches in width, or greater, within the plane of the trusses;  
or where there are not 2 or more adjacent trusses with web configurations capable of  
accommodating an assumed rectangle.  
(c) “Attic, uninhabitable without storage” means an uninhabitable attic without  
storage where the maximum clear height between joists and rafters is less than 42 inches  
or where there are not 2 or more adjacent trusses with web configurations capable of  
accommodating an assumed rectangle 42 inches high by 24 inches in width or greater,  
within the plane of the trusses.  
(d) “Cold weather months” means November 1 through April 1 in Michigan  
Uniform Energy Code climate zone 5A and from October 15 through May 1 in Michigan  
Uniform Energy Code climate zones 6A and 7.  
(e) “Occupiable space” means a room or enclosed space designed for regular or non-  
regular human occupancy in which individuals congregate for activities, amusement,  
educational or similar purposes, or in which occupants are engaged at labor, and which is  
equipped with means of egress, heat, light, and ventilation facilities meeting the  
requirements of the code. Occupiable space does not include those spaces that are  
intended primarily for other purposes such as storage rooms and equipment rooms.  
(f) "Registered design professional" means an individual who is licensed under the  
occupational code, 1980 PA 299, MCL 339.101 to 339.2677.  
History: 1988 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014  
AACS; 2016 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30416 Rescinded.  
History: 1979 AC; 1981 AACS; 2004 AACS; 2016 AACS.  
R 408.30417 Rescinded.  
History: 1979 AC; 1981 AACS; 2004 AACS; 2008 AACS.  
R 408.30418 Maximum Occupiable space heating systems.  
Rule 418. 1203.1 of the code is amended to read as follows:  
1203.1. Equipment and systems. Interior spaces intended for human occupancy shall  
be provided with heating facilities capable of maintaining a minimum interior room  
temperature of 68 degrees Fahrenheit at a point 3 feet above the floor and 2 feet from  
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exterior walls at the required design temperature. The installation of portable space  
heaters shall not be used to comply with this section.  
Exceptions:  
(a) Interior spaces where the primary purpose is not associated with human contact.  
(b) Group F, H, S, or U occupancies.  
(c) Interior, seasonal spaces unoccupied during cold weather months, including  
restrooms, shower buildings, day-use restrooms, concession stands, press boxes, ticket  
booths, and locker rooms.  
History: 1979 AC; 1981 AACS; 2004 AACS; 2008 AACS; 2014 AACS; 2016 AACS; 2024 MR 23,  
Eff. April 9, 2025.  
R 408.30419 Toilet room requirements.  
Rule 419. Section 1210.1 is amended and sections 1210.4,1210.5, and 1210.6 are  
added to the code to read as follows:  
1210.1. Required fixtures. The number and type of plumbing fixtures provided in an  
occupancy shall comply with the Michigan plumbing code.  
1210.4. Toilet room location. Toilet rooms shall not open directly into a room used  
to prepare food for service to the public.  
1210.5. Baby changing stations. A building or structure with baby changing stations  
in the women's restrooms shall have baby changing stations in the men's restrooms.  
1210.6. Directional signage indicating the route to the public facilities. Signage shall  
be located in a corridor or aisle at the entrance to the facilities for customers and visitors  
indicating the route to the public facilities.  
History: 1979 AC; 1981 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS;  
2024 MR 23, Eff. April 9, 2025.  
R 408.30420 Rescinded.  
History: 1979 AC; 1981 AACS; 2010 AACS; 2014 AACS; 2016 AACS.  
R 408.30421 Emergency escape and rescue.  
Rule 421. Sections 1025.1 and 1030.1 of the code are amended and 1016.2.2 is  
added to read as follows:  
1016.2.2. Group E. Egress from classrooms in group E occupancies shall be limited  
to  
pass through 1 intervening space before reaching an exit access door leading directly  
to a corridor or an exit.  
1025.1. General. Approved luminous egress path markings delineating the exit path  
shall be provided in buildings with an occupied floor located more than 75 feet (16 764  
mm) above the lowest level of fire department vehicle access of groups A, B, E, I, M, and  
R-I occupancies in accordance with sections 1024.1 to 1024.5.  
1030.1. General. In addition to the means of egress required by this chapter,  
provisions shall be made for emergency escape and rescue in group R occupancies as  
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applicable in section 101.2. Basements and sleeping rooms below the fourth story above  
grade plane shall have at least 1 exterior emergency escape and rescue opening in  
accordance with this section. Where basements contain 1 or more sleeping rooms,  
emergency egress and rescue openings shall be required in each sleeping room, but shall  
not be required in adjoining areas of the basement. The opening shall open directly into a  
public street, public alley, yard, or court.  
Exceptions:  
1. In other than group R-3 occupancies as applicable in section 101.2, buildings  
equipped throughout with an approved automatic sprinkler system in accordance with  
section 903.3.1.1 or 903.3.1.2.  
2. In other than group R-3 occupancies as applicable in section 101.2, sleeping  
rooms provided with a door to a fire-resistance-rated corridor having access to 2 remote  
exits in opposite directions.  
3. The emergency escape and rescue opening may open onto a balcony within an  
atrium in accordance with the requirements of section 404, provided the balcony provides  
access to an exit and the dwelling unit or sleeping unit has a means of egress that is not  
open to the atrium.  
4. Basements with a ceiling height of less than 80 inches (2 032 mm) shall not be  
required to have emergency escape and rescue openings.  
5. High-rise buildings in accordance with section 403.  
6. Emergency escape and rescue openings are not required from basements, or  
sleeping rooms which have an exit door or exit access door that opens directly into a  
public street, public alley, yard, egress court, or to an exterior exit balcony that opens to a  
public street, public alley, yard, or egress court.  
7. Basements without habitable spaces and having not more than 200 square feet  
(18.6 square meters) in floor area shall not be required to have emergency escape and  
rescue openings.  
History: 1979 AC; 1981 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS.  
R 408.30422 Rescinded.  
History: 1979 AC; 1981 AACS.  
R 408.30423 Rescinded.  
History: 1979 AC; 1981 AACS.  
R 408.30427 Barrier free design for buildings, structures, and improved areas.  
Rule 427. Section 1102.1 of the code is amended and section 1103.2.15 is added to  
the code to read as follows:  
1102.1. Design. Buildings and facilities shall be designed and constructed to be  
accessible in accordance with 1966 PA 1, MCL 125.1351 to 125.1356, the code, and  
ICC/ANSI A 117.1, except sections 611 and 707.  
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1103.2.15. Military, fire service, and police facilities. Housing, bathing, toilet,  
training, and storage areas intended for use and occupancy exclusively by military, fire  
service, police, or security personnel required to be physically agile are not required to be  
accessible.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1987 AACS; 1988 AACS; 1992 AACS; 1995 AACS;  
1998-2000 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS; 2024  
MR 23, Eff. April 9, 2025.  
R 408.30427a Rescinded.  
History: 1987 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS.  
R 408.30427b Rescinded.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS.  
R 408.30427c Rescinded.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS.  
R 408.30427d Rescinded.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS.  
R 408.30427e Rescinded.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS.  
R 408.30428 Rescinded.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1987 AACS; 1992 AACS; 1995 AACS; 2010 AACS;  
2014 AACS; 2016 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30429 High-rise buildings.  
Rule 429. Sections 403.1 and 403.5.4, of the code are amended to read as follows:  
403.1. Applicability. The provisions of this section shall apply to buildings having  
the occupied floors located more than 55 feet (16 764 mm) above the lowest level of fire  
department vehicle access.  
Exception: The provisions of this section shall not apply to the following buildings  
and structures:  
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1. Airport traffic control towers in accordance with section 412 of the code.  
2. Open parking garages in accordance with section 406.5of the code.  
3. Buildings with an occupancy in group A-5 in accordance with section 303.6 of  
the code.  
4. Special industrial occupancies in accordance with section 503.1.1 of the code.  
5. Buildings with any of the following:  
5.1. A group H-1 occupancy.  
5.2. A group H-2 occupancy in accordance with section 415.8, 415.9.2, 415.9.3,  
426.1.  
or  
5.3. A group H-3 occupancy in accordance with section 415.8.  
6. Existing buildings having occupied floor levels not more than 75 feet (22 860  
mm) above the lowest level of fire department vehicle access where the local unit of  
government complies with both of the following:  
6.1. The local unit of government has a municipal fire department with an ISO  
rating of 3 or lower, employing a full-time career firefighting staff.  
6.2. The governing body of the local unit of government has passed a resolution  
affirming the use of this exception and filed that resolution with the department of  
licensing and regulatory affairs, bureau of construction codes.  
403.5.4. Smokeproof exit enclosures. Every required stairway serving floors more  
than 55 feet (16 764 mm) above the lowest level of fire department vehicle access shall  
comply with sections 909.20 and 1023.10 of the code.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS;  
2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS.  
R 408.30429a Rescinded.  
History: 2002 AACS; 2004 AACS; 2010 AACS; 2014 AACS; 2016 AACS.  
R 408.30429b Elevator lobby.  
Rule 429b. Section 713.14.1 of the code is amended to read as follows:  
713.14.1. An enclosed elevator lobby shall be provided at each floor where an  
elevator shaft enclosure connects more than 3 stories. The lobby enclosure shall separate  
the elevator shaft enclosure doors from each floor by fire partitions. In addition to the  
requirements in section 708 for fire partitions, doors protecting openings in the elevator  
lobby enclosure walls shall also be in compliance with section 716.5.3 as required for  
corridor walls and penetrations of the elevator lobby enclosure by ducts and air transfer  
openings shall be protected as required for corridors in accordance with section 717.5.4.1.  
Elevator lobbies shall have at least 1 means of egress complying with chapter 10 and  
other provisions within this code.  
Exceptions:  
1. Enclosed elevator lobbies are not required at the level or levels of exit discharge  
provided the level or levels of exit discharge is equipped with an automatic sprinkler  
system in accordance with section 903.3.1.1.  
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2. Elevators not required to be located in a shaft in accordance with section 712.1  
are not required to have enclosed elevator lobbies.  
3. Enclosed elevator lobbies are not required where additional doors are provided at  
the hoistway opening in accordance with section 3002.6. The doors shall comply with  
the smoke and draft control door assembly requirements in section 716.5.3.1 when tested  
in accordance with UL 1784 without an artificial bottom seal.  
4. Enclosed elevator lobbies are not required where the building is protected by an  
automatic sprinkler system installed in accordance with section 902.2.1.1 or 903.3.1.2.  
This exception shall not apply to all of the following:  
4.1. Group I-2 occupancies.  
4.2. Group I-3 occupancies.  
4.3. Elevator serving floor levels over 55 feet above the lowest level of fire  
department vehicle access in high-rise buildings.  
5. Smoke partitions may be in place of fire partitions to separate the elevator lobby  
at each floor where the building is equipped throughout with an automatic sprinkler  
system installed in accordance with section 903.3.1.1 or 903.3.1.2. In addition to the  
requirements in section 710 for smoke partitions, doors protecting openings in the smoke  
partitions shall also be in compliance with sections 710.5.2.2, 710.5.2.3, and 716.5.9 and  
duct penetrations of the smoke partitions shall be protected as required for corridors in  
accordance with section 717.5.4.1.  
6. Enclosed elevator lobbies are not required where the elevator hoistway is  
pressurized in accordance with section 909.21.  
7. Enclosed elevator lobbies are not required where the elevator serves only open  
parking garages in accordance with section 406.5.  
History: 2014 AACS.  
R 408.30430 Rescinded.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS;  
2008 AACS; 2016 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30431 Rescinded.  
History: 1979 AC; 1981 AACS; 1985 AACS.  
R 408.30432 Rescinded.  
History: 1979 AC; 1981 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS; 2008 AACS;  
2016 AACS.  
R 408.30433 Rescinded.  
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History: 1979 AC; 1981 AACS; 1985 AACS; 1987 AACS; 1988 AACS; 1992 AACS; 1995 AACS;  
1998-2000 AACS.  
R 408.30434 Rescinded.  
History: 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS.  
R 408.30437 Rescinded.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2010  
AACS; 2014 AACS; 2016 AACS.  
R 408.30441 Rescinded.  
History: 2014 AACS; 2016 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30442 Rescinded.  
History: 1979 AC; 1981 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2024 MR 23, Eff. April 9,  
2025.  
R 408.30443 Rescinded.  
History: 1979 AC; 1981 AACS; 1985 AACS; 1987 AACS; 1988 AACS; 1992 AACS; 1995 AACS;  
1998-2000 AACS; 2001 AACS; 2004 AACS; 2010 AACS; 2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30444. Rescinded.  
History: 1979 AC; 1981 AACS; 1987 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001  
AACS; 2004 AACS; 2008 AACS.  
R 408.30445 Automatic sprinkler systems.  
Rule 445. Section 903.2.11.3 of the code is amended to read as follows:  
903.2.11.3. Buildings more than 30 feet (9144 mm) in height. An automatic  
sprinkler system shall be installed throughout a building that has a floor level which has  
an occupant load of 30 or more occupants and which is located 30 feet (9144 mm) or  
more above the lowest level of fire department vehicle access.  
Exceptions:  
1. Open parking structures.  
2. Occupancies in group F-2.  
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3. Existing buildings having occupied floor levels not more than 55 feet (16764  
mm) in height above the lowest level of fire department vehicle access, where the local  
unit of government complies with the following parameters:  
3.1. The local unit of government having a municipal fire department with an ISO  
rating of 3 or lower, employing a full-time career fire fighting staff.  
3.2. The governing body of the local unit of government has passed a resolution  
affirming the use of this exception and filed that resolution with the department of  
licensing and regulatory affairs, bureau of construction codes .  
History: 1979 AC; 1981 AACS; 1987 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001  
AACS; 2004 AACS; 2010 AACS; 2016 AACS.  
R 408.30446 Smoke alarm locations.  
Rule 446. Sections 907.2.11.8 and 907.2.11.8.1 are added to the code as follows:  
907.2.11.8. Smoke alarm locations in existing buildings constructed before  
November 6, 1974. Within each dwelling unit or sleeping unit, a single-station smoke  
alarm shall be installed in all of the following locations:  
(1) In each sleeping room or each area directly outside the sleeping room.  
(2) On each floor level including the basement level.  
For sleeping units with split levels and without an intervening door between the  
adjacent levels, a smoke alarm installed on the upper level shall suffice for the adjacent  
lower level provided that the lower level is less than 1 full story below the upper level.  
907.2.11.8.1. Equipment requirements. The required equipment for smoke alarms  
shall consist of the following:  
(1) Installation. Smoke alarm devices shall be listed and installed in accordance  
with the manufacturer’s installation requirements, the provisions of the code, and the  
provisions of NFPA  
72 as listed in chapter 35.  
(2) Power Source. The equipment shall be operable by power from 1 of the  
following primary sources:  
(a) The building wiring provided the wiring is served from a commercial source and  
is equipped with a battery backup. Wiring shall be permanent and without a  
disconnecting switch other than as required for overcurrent protection.  
(b) A non-rechargeable battery able to power the smoke alarm in the normal  
condition for a life of 5 years.  
(c) A rechargeable battery, with proper charging, able to power the alarm for a life  
of 5 years.  
(d) A commercial use alarm system with battery backup listed and approved in  
accordance with the commercial fire warning equipment provisions of NFPA 72, as  
adopted by reference in this rule.  
(3) Audible Alarm Notification. The activation of the alarm signal shall produce a  
sound that is audible in all occupiable dwelling areas.  
(4) Testing and Maintenance. The owner of a dwelling unit, in which required or  
optional fire detection or fire protection systems equipment is installed, shall be  
responsible for the proper operation, testing, and maintenance of the equipment in  
accordance with the manufacturer’s instructions included with the equipment. The  
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occupant of rental dwelling units shall be responsible for the periodic operational testing  
and periodic cleaning of the installed equipment within the rental unit in accordance with  
the testing instructions provided in the manufacturer’s instructions for the equipment. If  
the system fails, breaks, or is out of service, it shall be repaired and functional within 30  
days.  
Exception: Smoke alarms and devices installed in buildings constructed before  
November 6,  
1974 where an installation was approved by the appropriate enforcing agency under  
regulations in effect at the time of the installation shall be considered to comply with the  
provisions of the code.  
History: 1981 AACS; 1985 AACS; 2005 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016  
AACS.  
R 408.30447 Smokeproof enclosures.  
Rule 447. Section 1023.11 of the code is amended to read as follows:  
1023.11. Smokeproof enclosures. In buildings required to comply with section 403  
or 405 of the code, each of the exits of a building that serves stories where the floor  
surface is located more than 55 feet (16 764 mm) above the lowest level of fire  
department vehicle access or more than 30 feet (9 144 mm) below the level of exit  
discharge serving such floor levels shall be a smokeproof enclosure or pressurized  
stairway in accordance with section 909.20 of the code.  
History: 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS; 2004  
AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016 AACS.  
R 408.30448 Rescinded.  
History: 1979 AC; 1981 AACS; 1987 AACS; 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001  
AACS; 2008 AACS; 2010 AACS; 2016 AACS.  
R 408.30448a Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30448b Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30448c Rescinded.  
History: 1992 AACS; 1995 AACS.  
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R 408.30448d Ground snow loads.  
Rule 448d. Figure 1608.2 of the code is amended and Table 1608.3 is added to read  
as follows:  
FIGURE 1608.2  
Ground Snow Loads  
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Table 1608.3  
Michigan Ground Snow Loads by Jurisdiction  
COUNTY  
GROUND  
SNOW  
LOAD  
50  
JURISDICTIONS  
Alcona  
Alger  
All  
All  
70  
Allegan  
50  
All except:  
35  
city of Allegan  
city of Otsego  
city of Plainwell  
city of Wayland  
village of Hopkins  
village of Martin  
township of Allegan  
township of Dorr  
township of Gun Plain  
township of Hopkins  
township of Leighton  
township of Martin  
township of Monterey  
township of Otsego  
township of Salem  
township of Trowbridge  
township of Watson  
township of Wayland  
Alpena  
Antrim  
50  
60  
70  
All  
All except:  
township of Banks  
township of Central Lake  
township of Echo  
township of Jordan  
township of Warner  
Arenac  
Baraga  
Barry  
40  
70  
35  
30  
All  
All  
All except:  
village of Nashville  
township of Assyria  
township of Barry  
township of Johnstown  
township of Maple Grove  
Bay  
35  
All except:  
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40  
city of Pinconning  
township of Fraser  
township of Garfield  
township of Gibson  
township of Mt. Forest  
township of Pinconning  
Benzie  
Berrien  
Branch  
60  
50  
25  
20  
All  
All  
All except:  
township of Algansee  
township of California  
township of Gilead  
township of Kinderhook  
township of Ovid  
Calhoun  
25  
30  
All except:  
city of Battle Creek  
city of Marshall  
city of Springfield  
village of Athens  
township of Athens  
township of Battle Creek  
township of Bedford  
township of Convis  
township of Emmet  
township of Lee  
township of Leroy  
township of Marengo  
township of Marshall  
township of Newton  
township of Pennfield  
Cass  
30  
50  
All except:  
city of Dowagiac  
village of Cassopolis  
village of Edwardsburg  
township of Howard  
township of La Grange  
township of Milton  
township of Pokagon  
township of Silver Creek  
township of Wayne  
Charlevoix  
Cheboygan  
70  
70  
All  
All except:  
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60  
city of Cheboygan  
village of Afton  
village of Wolverine  
township of Aloha  
township of Benton  
township of Ellis  
township of Grant  
township of Koehler  
township of Nunda  
township of Walker  
township of Waverly  
township of Wilmot  
Chippewa  
70  
60  
All except:  
village of DeTour  
township of DeTour  
township of Raber  
Clare  
40  
50  
All except:  
township of Summerfield  
township of Winterfield  
Clinton  
30  
35  
All except:  
city of St. Johns  
village of Fowler  
village of Maple Rapids  
village of Westphalia  
township of Bengal  
township of Dallas  
township of Essex  
township of Greenbush  
township of Lebanon  
township of Westphalia  
Crawford  
Delta  
50  
60  
60  
70  
All  
All except:  
All except:  
township of Garden  
township of Masonville  
township of Nahma  
Dickinson  
Eaton  
60  
30  
35  
All  
All except:  
village of Mulliken  
village of Sunfield  
township of Sunfield  
Emmet  
70  
30  
All  
Genesee  
All except:  
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25  
city of Davison  
city of Fenton  
city of Grand Blanc  
city of Linden  
village of Gaines  
village of Goodrich  
township of Argentine  
township of Atlas  
township of Davison  
township of Fenton  
township of Grand Blanc  
township of Mundy  
Gladwin  
Gogebic  
40  
60  
60  
35  
20  
25  
All  
All  
Grand Traverse  
Gratiot  
All  
All  
Hillsdale  
All except:  
city of Litchfield  
township of Litchfield  
township of Scipio  
Houghton  
80  
70  
All except:  
township of Adams  
township of Chassell  
township of Duncan  
township of Elm River  
township of Laird  
township of Portage  
90  
village of Calumet  
village of Copper City  
village of Lake Linden  
village of Laurium  
township of Calumet  
township of Schoolcraft  
Huron  
35  
25  
30  
All  
Ingham  
All except:  
city of East Lansing  
city of Lansing  
city of Mason  
township of Alaiedon  
township of Aurelius  
township of Delhi  
township of Lansing  
township of Meridian  
township of Williamston  
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Ionia  
Iosco  
35  
40  
60  
40  
35  
All  
All  
Iron  
All  
Isabella  
All except:  
village of Shepherd  
township of Chippewa  
township of Coe  
township of Fremont  
township of Lincoln  
township of Union  
Jackson  
25  
20  
All except:  
village of Brooklyn  
township of Columbia  
township of Norvell  
Kalamazoo  
30  
35  
All except:  
city of Parchment  
township of Alamo  
township of Cooper  
township of Oshtemo  
Kalkaska  
Kent  
60  
35  
40  
All  
All except:  
city of Cedar Springs  
village of Casnovia  
village of Kent City  
village of Sand Lake  
village of Sparta  
township of Nelson  
township of Solon  
township of Sparta  
township of Tyrone  
Keweenaw  
Lake  
90  
All except:  
100  
township of Eagle Harbor  
township of Grant  
township of Houghton  
60  
50  
All except:  
township of Chase  
township of Cherry Valley  
township of Ellsworth  
township of Pinora  
township of Pleasant Plains  
township of Yates  
Lapeer  
25  
All except:  
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30  
village of Clifford  
village of Columbiaville  
village of North Branch  
village of Otter Lake  
township of Burlington  
township of Burnside  
township of Deerfield  
township of Marathon  
township of North Branch  
township of Oregon  
township of Rich  
Leelanau  
Lenawee  
Livingston  
Luce  
60  
20  
25  
70  
60  
70  
All  
All  
All  
All  
Mackinac  
All except:  
township of Newton  
township of Portage  
Macomb  
Manistee  
Marquette  
25  
60  
70  
60  
All  
All  
All except:  
township of Ewing  
township of Wells  
township of Republic  
Mason  
Mecosta  
60  
40  
60  
35  
40  
All  
All  
Menominee  
Midland  
All  
All except:  
city of Coleman  
village of Sanford  
township of Edenville  
township of Geneva  
township of Hope  
township of Mills  
township of Warren  
Missaukee  
50  
60  
All except:  
township of Bloomfield  
township of Caldwell  
township of Pioneer  
Monroe  
20  
35  
All  
Montcalm  
All except:  
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40  
village of Howard City  
village of Lakeview  
village of Pierson  
township of Cato  
township of Maple Valley  
township of Pierson  
township of Reynolds  
township of Winfield  
Montmorency  
Muskegon  
50  
40  
50  
All  
All except:  
township of Holton  
township of Blue Lake  
60  
city of Montague  
city of Muskegon  
city of Muskegon Heights  
city of North Muskegon  
city of Norton Shores  
city of Roosevelt Park  
city of Whitehall  
township of Dalton  
township of Fruitland  
township of Fruitport  
township of Laketon  
township of Montague  
township of Muskegon  
township of Sullivan  
township of Whitehall  
township of White River  
village of Fruitport  
village of Lakewood Club  
Newaygo  
40  
50  
All except:  
village of Hesperia  
township of Barton  
township of Beaver  
township of Denver  
township of Home  
township of Lilley  
township of Merrill  
township of Troy  
Oakland  
Oceana  
25  
60  
All  
All except:  
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50  
village of Hesperia  
village of Walkersville  
township of Colfax  
township of Crystal  
township of Elbridge  
township of Ferry  
township of Greenwood  
township of Leavitt  
township of Newfield  
township of Otto  
Ogemaw  
40  
50  
All except:  
city of Rose City  
township of Cummings  
township of Foster  
township of Goodar  
township of Hill  
township of Klacking  
township of Ogemaw  
township of Rose  
Ontonagon  
Osceola  
70  
60  
All except:  
township of Haight  
township of Interior  
township of McMillan  
50  
40  
All except:  
city of Evart  
village of Hersey  
township of Evart  
township of Hersey  
township of Orient  
township of Osceola  
township of Sylvan  
Oscoda  
Otsego  
50  
50  
60  
All  
All except:  
village of Elmira  
village of Vanderbilt  
township of Corwith  
township of Elmira  
township of Hayes  
township of Livingston  
Ottawa  
50  
35  
All except:  
township of Georgetown  
township of Jamestown  
township of Tallmadge  
township of Zeeland  
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40  
city of Coopersville  
township of Allendale  
township of Blendon  
township of Chester  
township of Polton  
township of Wright  
Presque isle  
Roscommon  
Saginaw  
50  
60  
50  
40  
35  
30  
All except:  
township of Bearinger  
All except:  
township of Nester  
All except:  
city of Frankenmuth  
village of Birch Run  
village of Chesaning  
village of Oakley  
township of Albee  
township of Birch Run  
township of Brady  
township of Bridgeport  
township of Chapin  
township of Chesaning  
township of Frankenmuth  
township of Maple Grove  
township of St. Charles  
township of Taymouth  
Sanilac  
30  
25  
All except:  
village of Melvin  
township of Fremont  
township of Worth  
35  
village of Minden City  
township of Austin  
township of Greenleaf  
township of Minden  
Schoolcraft  
Shiawassee  
70  
30  
25  
All  
All except:  
village of Byron  
township of Burns  
St. Clair  
25  
30  
All  
St. Joseph  
All except:  
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25  
city of Sturgis  
village of Burr Oak  
village of Colon  
village of White Pigeon  
township of Burr Oak  
township of Colon  
township of Fawn River  
township of Sherman  
township of Sturgis  
township of White Pigeon  
Tuscola  
30  
35  
All except:  
village of Caro  
village of Cass City  
village of Fairgrove  
village of Gagetown  
village of Reese  
village of Unionville  
township of Akron  
township of Almer  
township of Columbia  
township of Elkland  
township of Elmwood  
township of Fairgrove  
township of Gilford  
township of Wisner  
Van Buren  
50  
30  
35  
All except:  
township of Porter  
city of Gobles  
village of Decatur  
village of Lawton  
village of Mattawan  
village of Paw Paw  
township of Almena  
township of Antwerp  
township of Bloomingdale  
township of Decatur  
township of Paw Paw  
township of Pine Grove  
township of Waverly  
Washtenaw  
25  
All except:  
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20  
city of Ann Arbor  
city of Saline  
city of Ypsilanti  
village of Manchester  
township of Augusta  
township of Bridgewater  
township of Lodi  
township of Manchester  
township of Pittsfield  
township of Saline  
township of Superior  
township of York  
township of Ypsilanti  
Wayne  
20  
25  
60  
50  
All except:  
city of Northville  
All except:  
Wexford  
township of Clam Lake  
History: 1992 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2004 AACS; 2024 MR 23, Eff.  
April 9, 2025.  
R 408.30449 Frost protection.  
Rule 449. Section 1809.5 of the code is amended to read as follows:  
1809.5. Frost protection. Except where otherwise protected from frost, foundation  
walls, piers, and other permanent supports of buildings and structures shall be protected  
from frost by at least 1 of the following methods:  
(1) Extending not less than 42 inches (1 067 mm) below finish grade.  
(2) Constructing in accordance with ASCE-32 listed in chapter 35. (3) Erecting on  
solid rock.  
Exceptions:  
1. Free-standing buildings meeting all of the following conditions shall not be  
required to be protected:  
a. Classified in risk category I in accordance with section 1604.5 of the code.  
2
b. Area of 600 square feet (55.74 m ) or less for light-frame construction or 400  
2
square feet (37 m ) or less for other than light-frame construction.  
c. Eave height of 10 feet (3 048 mm) or less.  
2. Upon evidence of the existence of any of the following conditions, the building  
official may modify the footing depth accordingly:  
a. Freezing temperatures. b. Soil type.  
c. Groundwater conditions. d. Snow depth experience.  
e. Exposure to the elements.  
f. Other specific conditions identified by the building official that may affect the  
foundation system.  
Footings shall not bear on frozen soil unless such frozen condition is of a permanent  
character.  
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History: 1979 AC; 1981 AACS; 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS;  
2004 AACS; 2008 AACS; 2010 AACS; 2014 AACS.  
R 408.30449a Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30451 Rescinded.  
History: 1985 AACS; 1988 AACS; 1992 AACS; 1995 AACS.  
R 408.30451a Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30451b Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30451c. Flood loads.  
Rule 451c. Section 1612.3.1 of the code is amended and 1612.4.1 is added to the  
code to read as follows:  
1612.3.1. Alternate flood hazard provisions. Absent the adoption of a flood hazard  
map and supporting data, flood hazard areas as determined by the state under its  
administration of the Part 31, floodplain regulatory authority of the natural resources and  
environmental protection act, 1994 PA 451, MCL 324.101 to 324.90106, shall become  
the basis for regulation of floodplain development within the community and section  
1612 shall apply to buildings and structures within those areas.  
1612.4.1. Minimum requirements for buildings and structures. All of the following  
are in addition to the requirements of ASCE 24:  
(1) Buildings and structures in flood hazard areas subject to high velocity wave  
action  
(zone V) shall be in compliance with the requirements of ASCE 24 for such flood  
hazard areas.  
(2) The lowest floors of structure category II buildings and structures shall be at or  
above the elevation specified in ASCE 24 or 1 foot (305 mm) above the design flood  
elevation, whichever is higher.  
(3) The lowest floors of structure category III and IV buildings and structures in  
flood hazard areas not subject to high velocity wave action (zone A) shall be at or above  
the elevation specified in ASCE 24 or 1 foot (305 mm) above the 500-year flood  
elevation, whichever is higher. For the purpose of this requirement, the 500-year flood  
elevation is the elevation of flooding having a 0.2% chance of being equaled or exceeded  
in any given year.  
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(4) Dry floodproofing for structure category II buildings and structures shall extend  
to or above the elevation specified in ASCE 24 or 1 foot (305 mm) above the design  
flood elevation, whichever is higher.  
(5) Dry floodproofing for structure category III and IV buildings and structures shall  
extend to or above the elevation specified in ASCE 24 or 1 foot (305 mm) above the 500-  
year flood elevation, whichever is higher. For the purpose of this requirement, the 500-  
year flood elevation is the elevation of flooding having a 0.2% chance of being equaled  
or exceeded in any given year.  
(6) The interior floor or finished ground level of under-floor spaces and crawlspaces  
shall comply with section 1805.1.2.1 of this code.  
History: 1992 AACS; 1995 AACS; 2001 AACS; 2008 AACS; 2010 AACS; 2014 AACS; 2016  
AACS.  
R 408.30451d Rescinded.  
History: 1992 AACS; 1995 AACS.  
R 408.30451e Rescinded.  
History: 1992 AACS; 1995 AACS; 1998-2000 AACS.  
R 408.30452 Rescinded.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 2014 AACS; 2016 AACS.  
R 408.30453 Plumbing systems.  
Rule 453. Section 2901.1 of the code is amended to read as follows:  
2901.1. Scope. The provisions of this chapter and the Michigan plumbing code, R  
408.30701 to R 408.30796, shall govern the erection, installation, alteration, repairs,  
relocation, replacement, addition to, use or maintenance of, plumbing equipment and  
systems. Plumbing systems and equipment shall be constructed, installed, and  
maintained in accordance with the Michigan plumbing code, R 408.30701 to R  
408.30796.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS.  
R 408.30454 Rescinded.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS.  
R 408.30455 Rescinded.  
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History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS.  
R 408.30456 Rescinded.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS.  
Editor's note: Former R 408.30456 was rescinded by 1979 ACS 8, Eff. Dec. 16, 1981.  
R 408.30457 Mechanical systems.  
Rule 457. Section 2801.1 of the code is amended to read as follows:  
2801.1. Scope. Mechanical appliances, equipment, and systems shall be  
constructed, installed, and maintained in accordance with the Michigan mechanical  
code, R 408.30901 to R 408.30998, and the international fuel gas code listed in chapter  
35. Masonry chimneys, fireplaces, and barbeques shall comply with the Michigan  
mechanical code, R 408.30901 to R 408.30998, and chapter 21 of the code.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 2001 AACS; 2008 AACS.  
R 408.30458 Elevators and conveying systems.  
Rule 458. Sections 3001.1, 3001.5, 3002.5, 3003.1, and 3003.2 of the code are  
amended, and sections 3003.1.5 and 3004.5 are added to the code to read as follows:  
3001.1. Scope. The design, construction, installation, alteration, and repair of  
elevators and conveying systems and their equipment shall conform with the  
requirements of the Michigan elevator laws and rules, including 1967 PA 227, MCL  
408.801 to 408.824; 1976 PA 333, MCL 338.2151 to 338.2160; R 408.7001 to R  
408.8695; and this chapter. Installation or construction in flood hazard areas established  
in section 1612.3 shall comply with ASCE 24 listed in chapter 35.  
3001.5 Change in use. A change in use of an elevator from freight to passenger,  
passenger to freight, or from 1 freight class to another freight class shall comply with the  
requirements of R 408.7001 to R 408.8695.  
3002.5. Emergency doors. Where an elevator is installed in a single blind hoistway  
or on the outside of a building, there shall be installed in the blind portion of the hoistway  
or blank face of the building, an emergency door in accordance with the requirements of  
R 408.7001 to R 408.8695.  
3003.1. Standby power. In buildings and structures where, standby power is  
required or furnished to operate an elevator, the operation shall be in accordance with  
sections 3003.1.1 to 3003.1.5 of the code.  
3003.1.5. Lighting. Where standby power is connected to elevators, the machine  
room, car top, pit, and landing lighting shall be connected to the standby power source.  
3003.2 Firefighters’ emergency operation. Elevators shall be provided with phase I  
emergency recall operation and phase II emergency in-car operation in accordance with  
the requirements of R 408.7001 to R 408.8695.  
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3004.5. Construction at bottom of hoistway. Pits extending to the ground shall have  
noncombustible floors and be designed to prevent the entry of groundwater into the pit.  
The pit floor of any hoistway not extending to the ground shall be of fire-resistive  
construction, having a fire-resistance rating at least equal to that required for the hoistway  
enclosure.  
History: 1988 AACS; 1992 AACS; 1995 AACS; 2001 AACS; 2004 AACS; 2008 AACS; 2016  
AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30459 Elevators.  
Rule 459. Sections 1009.4 and 1607.11.1 of the code are amended to read as  
follows:  
1009.4. Elevators. To be considered part of an accessible means of egress, an  
elevator shall comply with the emergency operation and signaling device requirements of  
R 408.7001 to R 408.8695.  
1607.11.1. Elevators. Elevator loads shall be increased by 100% for impact and the  
structural supports shall be designed within the limits of deflection prescribed by R  
408.7001 to R 408.8695.  
History: 1985 AACS; 1988 AACS; 1992 AACS; 2008 AACS; 2016 AACS; 2024 MR 23, Eff. April  
9, 2025.  
R 408.30460 Rescinded.  
History: 1979 AC; 1981 AACS; 1987 AACS; 1988 AACS; 1992 AACS.  
R 408.30461 Rescinded.  
History: 1979 AC; 1981 AACS; 1987 AACS; 1988 AACS; 2001 AACS; 2004 AACS.  
R 408.30475 Rescinded.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2004 AACS; 2008  
AACS; 2010 AACS; 2016 AACS.  
R 408.30476 Criteria.  
Rule 476. Section 1301.1.1 of the code is amended to read as follows:  
1301.1.1. General. Buildings shall be designed and constructed in accordance with  
the Michigan energy code, part 10a , R 408.31087 to R 408.31099.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 2001 AACS; 2010 AACS; 2016 AACS.  
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R 408.30495 Rodent proofing.  
Appendix F101.1 of the code is amended and F101.1.1 is added to the code to read  
as follows:  
F101.1. General. Buildings or structures and the walls enclosing habitable or  
occupiable rooms and spaces in which people live, sleep, or work, or in which feed,  
food, or foodstuff is stored, prepared, processed, served, or sold shall be constructed in  
accordance with this section. Other buildings are subject to these requirements as  
provided in section F101.1.1 of the code.  
F101.1.1. Additional buildings. In a community that has a vermin infestation  
program for the eradication of vermin enacted by local ordinance, all buildings identified  
within such an ordinance shall be constructed in accordance with this section.  
History: 1985 AACS; 1988 AACS; 2001 AACS; 2008 AACS.  
R 408.30495a Rescinded.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 2004 AACS.  
R 408.30495b Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495c Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495d Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495e Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495f Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495g Rescinded.  
History: 1985 AACS; 1988 AACS.  
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R 408.30495h Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495i Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495j Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30495k Rescinded.  
History: 1985 AACS; 1988 AACS.  
R 408.30497 Signs.  
Appendix H101.1.1 is added to the code to read as follows:  
H101.1.1. Local ordinances. A governmental subdivision that has sign regulations  
governing the placement, location, size, height, or setback from public right of ways shall  
govern such items.  
History: 1979 AC; 1981 AACS; 2001 AACS; 2016 AACS.  
R 408.30499 Adoption of standards by reference; referenced codes.  
Rule 499. Chapter 35 of the code is amended to add the following referenced codes,  
which are available for inspection and purchase from the Michigan Department of  
Licensing and Regulatory Affairs, Bureau of Construction Codes, 611 West Ottawa,  
Lansing, Michigan 48933, each at a cost as of the time of adoption of these rules of:  
Michigan Electrical Code $131.00, Michigan Mechanical Code $87.50, Michigan  
Plumbing Code $87.50, Michigan Uniform Energy Code $49.00, Michigan Elevator  
Code $89.50, and Michigan Skilled Trades Regulation Rule Part 9 Boiler $0:  
(a) Michigan Electrical Code  
(b) Michigan Mechanical Code  
(c) Michigan Plumbing Code  
(d) Michigan Uniform Energy Code  
R 408.30801 to R 408.30880 of the  
Michigan Administrative Code.  
R 408.30901 to R 408.30998 of the  
Michigan Administrative Code.  
R 408.30701 to R 408.30796 of the  
Michigan Administrative Code.  
R 408.31001 to R 408.31086 of the  
Michigan Administrative Code.  
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(e) Michigan Elevator Code  
R 408.7001 to R 408.8695 of the  
Michigan Administrative Code.  
(f) Michigan Skilled Trades Regulation Rules Part 9 BoilerR 339.5171 to R 339.5253 of  
the Michigan Administrative Code.  
History: 1985 AACS; 1988 AACS; 1995 AACS; 1998-2000 AACS; 2001 AACS; 2004 AACS; 2008  
AACS; 2010 AACS; 2014 AACS; 2024 MR 23, Eff. April 9, 2025.  
R 408.30499a Rescinded.  
History: 1998-2000 AACS; 2001 AACS.  
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