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 10a MICHIGAN ENERGY CODE  
R 408.31087 Applicable code.  
Rule 1087. Rules governing the energy efficiency for the design and construction of  
buildings and structures, not including residential buildings, shall be those contained in  
the international energy conservation code, 2021 edition except for sections C104.2 to  
C104.5, C109.1 to C109.4, C110.1 to C110.3, and appendix CA and the ASHRAE  
energy  
standard  
for  
buildings,  
except  
low-rise  
residential  
buildings,  
ANSI/ASHRAE/IESNA standard 90.1-2019, referred to as the standard in these rules,  
including appendices A, C, E, F, G, H, and I. With the amendments noted, the  
international energy conservation code and the standard are adopted by reference in these  
rules. The provisions contained in Appendix CB are specifically adopted and  
authorized as mandatory requirements. The provisions contained in Appendix CC are  
specifically adopted and authorized as permissive guidelines and shall not be mandated  
by an enforcing agency. The Michigan energy code is available for inspection at the  
Michigan Department of Licensing and Regulatory Affairs, Bureau of Construction  
Codes, 611 W. Ottawa Street, 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 of $52.00. The ASHRAE 90.1- 2019 standard is  
available for inspection at the Michigan Department of Licensing and Regulatory Affairs,  
Bureau of Construction Codes, 611 West Ottawa Street, Lansing, Michigan 48933. The  
standard may be purchased from the American Society of Heating, Refrigeration and Air-  
Conditioning Engineers, Inc., 180 Technology Parkway North West, Peachtree Corners,  
Georgia 30092, or from https://www.ashrae.org at a cost of $177.00 each.  
History: 2003 AACS; 2010 AACS; 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31087a Rescinded.  
History: 2010 AACS; 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31087b Rescinded.  
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History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31088 Rescinded.  
History: 2003 AACS; 2010 AACS; 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31088a Scope; requirements.  
Rule 1088a. Section C101.1 is amended to read as follows:  
C101.1. Title. This code shall be known and cited as the “Michigan Commercial  
Energy Code.” It is referred to as “this code” in these rules.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31089 Rescinded.  
History: 2003 AACS; 2010 AACS; 2017 AACS.  
R 408.31090 Rescinded.  
History: 2003 AACS; 2010 AACS; 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31091 Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31091a Lighting systems.  
Rule 1091a. Section C503.5 is added to read as follows:  
C503.5 Lighting systems. New lighting systems that are part of the alteration shall  
comply with sections C405 and C408.  
Exception: Alterations that replace less than 50% of the luminaries in a space, if  
these alterations do not increase the installed interior lighting power.  
History: 2024 MR 23, Eff. April 22, 2025.  
R 408.31092 Construction documents.  
Rule 1092. Sections C102.1.1 and C103.1 of the code are amended to read as  
follows:  
C102.1.1. Above code programs. The state construction code commission may  
evaluate and approve a national, state, or local energy efficiency program to exceed the  
energy efficiency required by this code. Buildings approved in writing by an energy  
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efficiency program, such as ICC 700-2012 “silver” or energy star version 3 (rev. 07),  
shall be considered in compliance with this code. The requirements identified as  
“mandatory” in chapter 4 shall be met.  
C103.1. Submittal documents. Construction documents, special inspection and  
structural programs, and other data shall meet both of the following requirements:  
(1) Be submitted in 1 or more sets with each application for a permit.  
(2) Be prepared by, or under the direct supervision of, a registered design  
professional when required by the Occupational Code, 1980 PA 299, MCL 339.101 to  
339.2919.  
Where special conditions exist, the building official may require additional  
construction documents to be prepared by a registered design professional.  
History: 2017 AACS.  
R 408.31092a Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31093 Permits.  
Rule 1093. Section C104.1 of the code is amended to read as follows:  
C104.1. Permits. An owner or owner’s authorized agent who intends to construct,  
enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure,  
or to erect, install, enlarge, alter, repair, remove, convert, or replace any electrical, gas,  
mechanical, plumbing, or solar panel system, the installation that is regulated by this  
code, or to cause the work to be performed, shall first apply to the building official and  
obtain the required permit.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31094 Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31095 Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31096 Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31097 Rescinded.  
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History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31098 Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31098a Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31098b Rescinded.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31098c Lighting alterations.  
Rule 1098b. Section 9.1.2 of the standard is amended to read as follows:  
9.1.2. Lighting alterations. For the alteration of any lighting system in an interior  
space, that space shall comply with the lighting power density, LPD, allowances of  
section 9.5.1 or 9.6.1 and the control requirements of section 9.4.1.1 (a) to (d) and (g) to  
(i) as applicable to that space. For the alteration of any lighting system for the exterior of  
a building application, that lighting system shall comply with the LPD allowances of  
section 9.4.2 applicable to the area illuminated by that lighting system and the applicable  
control requirements of sections 9.4.1.4 and 9.4.2.  
Exception: Alterations that involve 50% or less of the connected lighting load in a  
space or area need not comply with these requirements, provided that the alterations do  
not increase the installed lighting power.  
History: 2017 AACS; 2024 MR 23, Eff. April 22, 2025.  
R 408.31099 Rescission.  
Rule 1099. R 408.31001 to R 408.31055 of the Michigan Administrative Code,  
appearing on pages 4149 to 4152 of the 1979 Michigan Administrative Code and pages  
602 and 603 of the 1981 Annual Supplement to the Code, are rescinded.  
History: 1998-2000 AACS.  
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;