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Roofing in Troy, Michigan

Yes, a permit is required to replace a roof in Troy, MI, issued by City of Troy - Building Department. A re-roof in Troy is building-permit work: the Building Department lists roofing among the building permits that "may be applied for online using BSAonline.com" and says to "Attach a completed building permit application, project cost verification, and supplemental specifications in pdf format, to all online Building permit submittals." The residential building permit application asks for the cost of construction and the contractor's state licence number. The building permit fee follows the cost of construction under the city's 2026-27 fee schedule; work under $1,000 costs "$90 plus Plan Review Fee". The department says "A Permit Board is now required at all jobsites", printed at least 24 by 36 inches with the permit attached, and "Failure to print and post the Permit Board will result in Inspectors cancelling inspections." Inspections are requested through BS&A Online or the inspection line, 248-689-5744, between 8:00 am and 2:00 pm. The Building Department is at Troy City Hall, 500 W. Big Beaver Road, Troy, MI 48084, 248-524-3344, open 8 am to 4:30 pm Monday to Friday. This hub aggregates roofing permit and contractor-registration requirements for Troy, Michigan, along with sourced roofing material references — every fact linked to its directory record.

Roofing permits & building code in Troy

Roofing permit and contractor-licensing rules in Troy are set locally by City of Troy - Building Department. Michigan licenses residential roofers at the state level — the Occupational Code’s residential maintenance and alteration contractor licence names roofing among its trades, with exemptions that include a job whose whole contract price is under $600 — and some cities add a local contractor registration on top, while the Michigan Residential Code applies throughout the state, so a city, village, township or county enforces the state code rather than writing its own roofing rules — always confirm the current requirements with the authority before starting work.

Roofing permit
Required
Contractor registration
Required
Adopted building code
2015 Michigan Residential Code. This is state law and it is the same in every Michigan city, village, township and county: the state construction code act says "This act and the code apply throughout the state," and the Michigan Residential Code rule adopts "the international residential code, 2015 edition" with the state amendments in R 408.30500 to R 408.30547g. A 2021 edition was filed with the secretary of state in 2025 but has not taken effect. On July 7, 2025 the Michigan Court of Claims entered a stipulated order in Home Builders Assoc et al. v LARA et al., and the Michigan Department of Licensing and Regulatory Affairs (LARA) says that while that order remains in place "the 2015 versions of the IRC and residential provisions of the IECC standards currently adopted, in part, by each rule set will remain valid and in effect." LARA's Statewide Jurisdiction List names the City of Troy as its own building code enforcer. Troy's Building Department says the same about the edition: "Be informed that LARA agreed to pause implementation of the 2021 Michigan Residential Code. In the interim, the 2015 versions of the International Residential Code" and the related energy provisions "remain in effect." Its Codes Currently in Effect page also lists the 2021 Michigan Residential Code, marked "See note above", beside that same note. City Code Chapter 79 adopts the state residential code by reference without naming an edition.
Registration details
  • state_level: Michigan licenses residential maintenance and alteration contractors under the Occupational Code, and that licence "includes the following crafts and trades" among which it names roofing (MCL 339.2404(3)); "A person shall not engage in or attempt to engage in the practice of an occupation regulated under this act" without the licence (MCL 339.601(1)). MCL 339.2403 lists who may work without one, including a project whose "aggregate contract price for the labor, material, and any other items for the undertaking or project is less than $600.00". This record does not decide whether a given roofer falls inside an exemption.
  • city_level: Troy registers contractors: its Building Department's Contractor Registration Form asks for the contractor's state licence number and its expiration date and says "only the contractor and the following names will be allowed to obtain permits", and the city's 2026-27 fee schedule lists a building contractor registration at $35.
Permit process
A re-roof in Troy is building-permit work: the Building Department lists roofing among the building permits that "may be applied for online using BSAonline.com" and says to "Attach a completed building permit application, project cost verification, and supplemental specifications in pdf format, to all online Building permit submittals." The residential building permit application asks for the cost of construction and the contractor's state licence number. The building permit fee follows the cost of construction under the city's 2026-27 fee schedule; work under $1,000 costs "$90 plus Plan Review Fee". The department says "A Permit Board is now required at all jobsites", printed at least 24 by 36 inches with the permit attached, and "Failure to print and post the Permit Board will result in Inspectors cancelling inspections." Inspections are requested through BS&A Online or the inspection line, 248-689-5744, between 8:00 am and 2:00 pm. The Building Department is at Troy City Hall, 500 W. Big Beaver Road, Troy, MI 48084, 248-524-3344, open 8 am to 4:30 pm Monday to Friday.
Portal
Permit portal

View the full Troy permitting authority record →

Roofing materials for Troy

Compare roofing material families — service life, weight, cost band, and durability — for a Troy reroof. Every material entry in the directory carries a cited, dated source.

Start with all roofing materials or the asphalt vs. metal vs. tile comparison.

Local permitting authority

City of Troy - Building Departmentcity

Roofing guides

Class 4 Impact-Resistant ShinglesGuide Asphalt vs. Metal vs. TileGuide Wind & Fire RatingsGuide

Sources