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Roofing in Ann Arbor, Michigan

No, Ann Arbor, MI does not require a permit for like-for-like roof replacement (City of Ann Arbor - Building and Construction Services). In Ann Arbor the permit line is drawn by roof type. The Building Department's expedited residential permit sheet says "Sloped asphalt shingled and metal roofs do not require a permit," while a flat roof reroof or re-cover ("Existing flat roofs reroofing and re-covering only") is permit work. That no-permit line is the department's stated practice: no enacted text names roof work either way, state law requires a permit "before construction of a building or structure" and relieves "ordinary repairs" without defining them, and this record does not decide whether the department's line is its reading of that relief. Every application goes through STREAM (stream.a2gov.org): "All permits must be applied for through this system." A licensed contractor first registers the state licence in STREAM under the Licenses tab; the fee schedule lists contractor registration at $15. A building permit costs a $15 base application fee, plus a permit fee of $100 for a project up to $1,000 or $100 plus $10 per $1,000 of cost from $1,000 to $50,000, plus a plan examination fee of 20% of the permit fee, paid when the application is submitted. A flat-roof permit for a one- or two-family dwelling or townhome can go through expedited review on Thursdays, 1 to 3 p.m., in reserved 15-minute slots, for an extra $15. In a historic district the sheet says "Exterior work for properties located in historic districts require approval for work prior to permit application," and City Code Chapter 103 says "A permit shall not be issued and proposed work shall not proceed until the commission has acted on the application." City Code section 8:121 also says gutter and downspout drainage on homes "must be directed toward a vegetated area or other approved point and may not directly drain onto impervious surfaces such as sidewalks or driveways." The department also says "Please contact our office if you are unsure of what type of permit to apply for." Questions go to 734-794-6263, extension 0, or [email protected]. This hub aggregates roofing permit and contractor-registration requirements for Ann Arbor, Michigan, along with sourced roofing material references — every fact linked to its directory record.

Roofing permits & building code in Ann Arbor

Roofing permit and contractor-licensing rules in Ann Arbor are set locally by City of Ann Arbor - Building and Construction Services. 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
Not 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." The City of Ann Arbor enforces this code itself (LARA's Statewide Jurisdiction List names the City as its own building enforcer), and its list of codes currently enforced, revised 1/26/26, names the 2015 Michigan Residential Code for one- and two-family dwellings and townhouses. The City's codes page adds that the "Residential Code will remain 2015 Michigan Residential Code until the State of Michigan adopts an updated Residential Code"; only commercial work moved to the 2021 Michigan Building Code, on May 1, 2025.
Permit process
In Ann Arbor the permit line is drawn by roof type. The Building Department's expedited residential permit sheet says "Sloped asphalt shingled and metal roofs do not require a permit," while a flat roof reroof or re-cover ("Existing flat roofs reroofing and re-covering only") is permit work. That no-permit line is the department's stated practice: no enacted text names roof work either way, state law requires a permit "before construction of a building or structure" and relieves "ordinary repairs" without defining them, and this record does not decide whether the department's line is its reading of that relief. Every application goes through STREAM (stream.a2gov.org): "All permits must be applied for through this system." A licensed contractor first registers the state licence in STREAM under the Licenses tab; the fee schedule lists contractor registration at $15. A building permit costs a $15 base application fee, plus a permit fee of $100 for a project up to $1,000 or $100 plus $10 per $1,000 of cost from $1,000 to $50,000, plus a plan examination fee of 20% of the permit fee, paid when the application is submitted. A flat-roof permit for a one- or two-family dwelling or townhome can go through expedited review on Thursdays, 1 to 3 p.m., in reserved 15-minute slots, for an extra $15. In a historic district the sheet says "Exterior work for properties located in historic districts require approval for work prior to permit application," and City Code Chapter 103 says "A permit shall not be issued and proposed work shall not proceed until the commission has acted on the application." City Code section 8:121 also says gutter and downspout drainage on homes "must be directed toward a vegetated area or other approved point and may not directly drain onto impervious surfaces such as sidewalks or driveways." The department also says "Please contact our office if you are unsure of what type of permit to apply for." Questions go to 734-794-6263, extension 0, or [email protected].

View the full Ann Arbor permitting authority record →

Roofing materials for Ann Arbor

Compare roofing material families — service life, weight, cost band, and durability — for a Ann Arbor 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.

Sources