(l) 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:
(1) Has obtained a certificate of registration as a well drilling contractor pursuant to part 127 of the public
(2) Has installed the geothermal vertical closed loops in accordance with the department of environmental
quality’s best practices regarding geothermal heat pump closed loops.
Exemption from the permit requirements of this code shall not be deemed to grant authorization for work
to be done in violation of the provisions of this code or other laws or ordinances of this jurisdiction.
106.3 Application for permit. Each application for a permit, along with the required fee, shall be filed
with the code official on a form furnished for that purpose and shall contain a general description of the
proposed work and its location. The contractor who is performing the work shall sign the application. The
permit application shall indicate the proposed occupancy of all parts of the building and of that portion of
the site or lot, if any, not covered by the building or structure and shall contain the information required by
106.3.1 Construction documents. (1) Construction documents, engineering calculations, diagrams, and
other data shall be submitted in 2 or more sets with each application for a permit. The code official shall
require construction documents, computations, and specifications to be prepared and designed by a
registered design professional in accordance with 1980 PA 299, MCL 339.101 to 339.2919.
1. The code official may waive the submission of construction documents, calculations, or other data if
the nature of the work applied for is such that reviewing of construction documents is not necessary to
determine compliance with the code.
2. Construction documents shall not be required when obtaining a permit from the State of Michigan,
bureau of construction codes for any of the following circumstance:
a. One-and 2-family dwellings when the heating or cooling input rating is 375,000 Btu’s or less.
b. Alterations and repair work determined by the mechanical official to be of a minor nature.
c. Business, mercantile, and storage buildings having HVAC equipment only, with 1 fire area and not
more than 3,500 square feet.
d. Work completed by a governmental subdivision or state agency costing less than $15,000.00.
Bureau code officials may require construction documents in unusual designs and where questions arise as
a result of a system design beyond conventional system parameters.
(2) Where special conditions exist, the code official may require additional construction documents to be
prepared by a registered design professional.
(3) Construction documents shall be drawn to scale and shall be of sufficient clarity to indicate the
location, nature, and extent of the work proposed and show in detail that the work conforms to the
provisions of this code.
(4) Construction documents for buildings more than 2 stories in height shall indicate where penetrations
will be made for mechanical systems, and the materials and methods for maintaining required structural
safety, fire-resistance rating, and fire blocking.
106.4. Permit issuance. The enforcing agency shall review the application, construction documents, and
other data filed by an applicant for permit in accordance with the act. If the enforcing agency finds that the
proposed work conforms to the requirements of the act, the code, and all other applicable laws and
ordinances thereto, and that all fees prescribed by the act have been paid, then the enforcing agency shall
issue a permit to the applicant.
106.4.3. Expiration. Each permit issued by the code official under the provisions of the code shall expire
by limitation and become null and void if the work authorized by the permit is not begun within 180 days
from the date of the permit, or if the work authorized by the permit is suspended or abandoned at any time
after the work is begun for a period of 180 days. Before work is recommenced, the permit shall be
reinstated if the code has not changed. If the code has changed and the work was not started, a new permit
shall be first obtained, provided no changes have been made or will be made in the original construction
document and that suspension or abandonment has not exceeded 1 year.
106.4.4. Extensions. A permittee holding an unexpired permit may apply for an extension of the time
within which the permittee may begin work under that permit if for good and satisfactory reasons. The
code official shall extend the time for action by the permittee for a period not exceeding 180 days if there is
reasonable cause. No permit shall be extended more than once.