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Permitting Authorities / Township of Grosse Ile - Community Development Department

Do you need a permit to replace a roof in Township of Grosse Ile, MI?

Adopted code

Township of Grosse Ile - Community Development Department

Yes, a permit is required to replace a roof in Township of Grosse Ile, MI, issued by Township of Grosse Ile - Community Development Department. Grosse Ile's Community Development Department posts no page or form specific to reroofing. Its fee schedule says "Fences, gutters, roofs, sheds, siding and windows/doors do not require a review fee" and "$40 Application Fee applies to all permits", and prices a building permit by the cost of construction, so a reroof is priced as a construction permit plus the application fee rather than under a roofing line. With the department silent on whether a reroof is exempt, the state's general permit rule applies, and the same section says "A building permit is not required for ordinary repairs of a building or structure" without defining ordinary repairs. The Building and Permits page says "The Township is currently accepting all permits online through BS&A", and the building permit application asks for a description of the work and its cost, says "Separate applications are required for each project", and says "Additional Administration Fee of $200 will be charged for any work started without a permit." The fee schedule adds "All permits require a final inspection. Building permits include inspections." and lists "Failure to Secure Permit: $200". Inspections are requested through the township's online "Schedule an Inspection" link. The department says it can be reached "from 8:00 AM to 4:30 PM, Monday-Friday", at 9601 Groh Road, (734) 676-4422 ext. 226.

Roof code checklist: Township of Grosse Ile, MI

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesgrosseile.com2026-10-11
Repair permit thresholdPublishedCommunity Development Department ...2026-10-11
Layer limit / roof-overPublishedR908.3.1.1codes.iccsafe.org2026-10-11
Deck & sheathingPublishedR905.2.1codes.iccsafe.org2026-10-11
Drip edgeYesR905.2.8.5codes.iccsafe.org2026-10-11
Ice & water shieldYesR905.1.2ars.apps.lara.state.mi.us2026-10-11
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNoars.apps.lara.state.mi.us2026-10-11
Wind design criteriaNot published
Adopted codePublishedars.apps.lara.state.mi.us2026-10-11
Contractor license / registrationYeslegislature.mi.gov2026-10-11
Sales & use taxPublishedlegislature.mi.gov2026-10-11

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
Township of Grosse Ile, Michigan
Jurisdiction type
city
Address
9601 Groh Road, Grosse Ile, MI 48138
Contact
  • url: https://www.grosseile.com/government/community_development/building_and_permits.php
  • phone: 734-676-4422 ext. 226
Permit portal
Permit portal
Roofing permit required
Required
Contractor registration required
Required
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: Grosse Ile's fee schedule lists "Contractor Registration: $35", and its building permit application says "Contractor must be registered with GI Township." The application also asks for the contractor's license number and expiration date, a federal employer ID number and a workers' compensation carrier or the reason for exemption. The pages read for this record do not state the conditions of the township registration.
Permit process note
Grosse Ile's Community Development Department posts no page or form specific to reroofing. Its fee schedule says "Fences, gutters, roofs, sheds, siding and windows/doors do not require a review fee" and "$40 Application Fee applies to all permits", and prices a building permit by the cost of construction, so a reroof is priced as a construction permit plus the application fee rather than under a roofing line. With the department silent on whether a reroof is exempt, the state's general permit rule applies, and the same section says "A building permit is not required for ordinary repairs of a building or structure" without defining ordinary repairs. The Building and Permits page says "The Township is currently accepting all permits online through BS&A", and the building permit application asks for a description of the work and its cost, says "Separate applications are required for each project", and says "Additional Administration Fee of $200 will be charged for any work started without a permit." The fee schedule adds "All permits require a final inspection. Building permits include inspections." and lists "Failure to Secure Permit: $200". Inspections are requested through the township's online "Schedule an Inspection" link. The department says it can be reached "from 8:00 AM to 4:30 PM, Monday-Friday", at 9601 Groh Road, (734) 676-4422 ext. 226.
Adopted 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 Township of Grosse Ile (spelled GROSSE ISLE there) as its own building code enforcer. Grosse Ile's codified Sec. 40-2 (Ord. No. 261, 3-8-1999, amended in its entirety 9-25-2023 by Ord. No. 23-04) adopts the "CABO One- and Two-Family Dwelling Code, 1995 edition"; this directory has not read that text, and whether the codified reference has any effect today is not decided here. This record states the 2015 Michigan Residential Code, which the state construction code act applies throughout the state ("This act and the code apply throughout the state," MCL 125.1508a) and which LARA says remains in effect while the Court of Claims order of July 7, 2025 stands. Grosse Ile has published no statement naming the edition it enforces; its Code of Ordinances Sec. 40-6, read October 11, 2026, says "the Building Official of the Township of Grosse Ile is hereby designated as the enforcing agency to discharge the responsibilities of the Township of Grosse Ile under Act 230 of the Public Acts of 1972".
Drip edge
Required — Required on asphalt shingle roofs by state law. Michigan makes no amendment to the drip edge rule of the 2015 International Residential Code, Section R905.2.8.5, which applies as published: "A drip edge shall be provided at eaves and rake edges of shingle roofs." Segments overlap by at least 2 inches, the drip edge extends at least 1/4 inch below the roof sheathing and at least 2 inches back onto the deck, it is fastened at no more than 12 inches on center, and underlayment goes over it at the eaves and under it at the rakes. A reroof is held to the same rule, because "Materials and methods of application used for re-covering or replacing an existing roof covering shall comply with the requirements of Chapter 9" (R908.1). The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on drip edge. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code). About drip edge
Ice & water shield
Required — Required everywhere in Michigan by state law. Michigan fills in the climatic design table of the 2015 code once for the whole state (Rule 516, Table R301.2(1)), and its ice barrier underlayment column reads Yes. The state footnote calls for Yes "for areas where the average daily temperature in January is 25 degrees Fahrenheit" or less, or where ice damming has caused damage. The base code then requires an ice barrier "for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," running "from the lowest edges of all roof surfaces to a point not less than 24 inches (610 mm) inside the exterior wall line of the building" (R905.1.2). Detached accessory structures without conditioned floor area are exempt. On a tear-off, an existing ice barrier that is adhered to the deck may stay and be covered with an additional layer (R908.3, Exception). The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on ice barrier. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code). About ice & water barrier
Impact-resistant roofing
Not required — No impact-resistance requirement under state law. The 2015 Michigan Residential Code was searched in full and has no hail or impact rating rule for roof coverings: the words hail, impact and UL 2218 do not appear in it, and none of them appears in the roof assemblies chapter of the base 2015 International Residential Code either. Michigan applies one code statewide ("This act and the code apply throughout the state."), and the act gives the power to amend it to the state director, who adopts the model codes "with amendments, additions, or deletions as the director determines appropriate." The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on impact resistance.
Repair permit threshold
No size or cost point is published below which roof work needs no permit. The Grosse Ile Community Development Department's fee schedule has no roofing line of its own: it says "All permit fees, except new homes, are based on the cost of construction", prices a building permit from $18 for the first $1,000 of construction cost, and lists "roofs" with fences, gutters, sheds, siding and windows/doors among work that "do not require a review fee". Under state law, "A building permit is not required for ordinary repairs of a building or structure." (MCL 125.1510), without a definition of ordinary repairs. For a small roof repair, ask the Community Development Department (734-676-4422 ext. 226) before starting.
Roof layer limit / recover
Two layers at most, under state law. Michigan builds one- and two-family homes to the 2015 Michigan Residential Code, which adopts the 2015 International Residential Code and makes no amendment to its reroofing section, Section R908; the Michigan rule set was searched in full and R908 does not appear in it. The base section therefore applies as the International Code Council publishes it. Section R908.3.1.1 lists the conditions under which a new roof may not be laid over an existing one, and the third is "Where the existing roof has two or more applications of any type of roof covering." One existing layer may be covered once; a roof that already carries two layers is torn off to the deck. The same section also bars covering a roof that is water soaked or too deteriorated to serve as a base, and covering "slate, clay, cement or asbestos-cement tile." Chapter 40 of the Grosse Ile Township Code (Building Construction, Secs. 40-1 to 40-16, in three articles) was read in full: it adopts the 2021 International Property Maintenance Code and the CABO code named in adopted_code, designates the Building Official as the enforcing agency, sets fees by the Township Board and refers electrical licensing to the state; it has no roofing provision of its own and amends nothing in Section R908. The Community Development Department pages, building permit application and fee schedule state no layer rule. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code).
Deck & sheathing requirements
State law, from the base code. Michigan makes no amendment to the roof sheathing section of the 2015 International Residential Code, Section R803, which does not appear in the Michigan rule set, so it applies as published. Lumber roof sheathing follows Table R803.1: over rafters or beams 24 inches apart it must be at least 5/8 inch net thick. Wood structural panels must be identified "for grade, bond classification and performance category by a grade mark or certificate of inspection issued by an approved agency," and their spans may not exceed "the values set forth in Table R503.2.1.1(1), or APA E30." For a shingle roof the base code adds that "Asphalt shingles shall be fastened to solidly sheathed decks" (R905.2.1), and on any reroof "The structural roof components shall be capable of supporting the roof covering system" (R908.2). The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on roof decks or sheathing. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code).
Sales & use tax
6%, statewide, with no local add-on. This is state law: the General Sales Tax Act sets the tax "equal to 6% of the gross proceeds of the business," the Use Tax Act sets "a total combined rate equal to 6%," and the Michigan Department of Treasury says "Michigan does not allow city or local units to impose sales tax." On a roofing job the roofer is the taxpayer on materials, because the Use Tax Act counts as a consumer "A person acquiring tangible personal property if engaged in the business of constructing, altering, repairing, or improving the real estate of others." Nothing on the Grosse Ile Community Development Department pages changes this.

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The Township of Grosse Ile's Community Development Department (Building & Zoning), at 9601 Groh Road in Grosse Ile, takes building permit applications through the BS&A online portal and runs the township's building inspections. Chapter 40 of the Township Code designates the Township's Building Official as the enforcing agency under the state construction code act, and the State of Michigan's jurisdiction list names the Township as its own building code enforcer. Michigan applies one residential code statewide, so the roofing rules below are state law.

Working an insurance claim in Township of Grosse Ile, MI? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

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Sources

Roofing questions: Township of Grosse Ile, MI

Do you need a permit to replace a roof in Township of Grosse Ile, MI?

Yes, a permit is required to replace a roof in Township of Grosse Ile, MI. No size or cost point is published below which roof work needs no permit. The Grosse Ile Community Development Department's fee schedule has no roofing line of its own: it says "All permit fees, except new homes, are based on the cost of construction", prices a building permit from $18 for the first $1,000 of construction cost, and lists "roofs" with fences, gutters, sheds, siding and windows/doors among work that "do not require a review fee". Under state law, "A building permit is not required for ordinary repairs of a building or structure." (MCL 125.1510), without a definition of ordinary repairs. For a small roof repair, ask the Community Development Department (734-676-4422 ext. 226) before starting.

Is ice & water shield required in Township of Grosse Ile, MI?

Yes. Required everywhere in Michigan by state law. Michigan fills in the climatic design table of the 2015 code once for the whole state (Rule 516, Table R301.2(1)), and its ice barrier underlayment column reads Yes. The state footnote calls for Yes "for areas where the average daily temperature in January is 25 degrees Fahrenheit" or less, or where ice damming has caused damage. The base code then requires an ice barrier "for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," running "from the lowest edges of all roof surfaces to a point not less than 24 inches (610 mm) inside the exterior wall line of the building" (R905.1.2). Detached accessory structures without conditioned floor area are exempt. On a tear-off, an existing ice barrier that is adhered to the deck may stay and be covered with an additional layer (R908.3, Exception). The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on ice barrier. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code).

Is drip edge required in Township of Grosse Ile, MI?

Yes. Required on asphalt shingle roofs by state law. Michigan makes no amendment to the drip edge rule of the 2015 International Residential Code, Section R905.2.8.5, which applies as published: "A drip edge shall be provided at eaves and rake edges of shingle roofs." Segments overlap by at least 2 inches, the drip edge extends at least 1/4 inch below the roof sheathing and at least 2 inches back onto the deck, it is fastened at no more than 12 inches on center, and underlayment goes over it at the eaves and under it at the rakes. A reroof is held to the same rule, because "Materials and methods of application used for re-covering or replacing an existing roof covering shall comply with the requirements of Chapter 9" (R908.1). The Community Development Department pages, building permit application and fee schedule, and Chapter 40 of the Township Code (Building Construction) were read for a local rule and state nothing further on drip edge. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code).

Can you roof over an existing roof in Township of Grosse Ile, MI?

Two layers at most, under state law. Michigan builds one- and two-family homes to the 2015 Michigan Residential Code, which adopts the 2015 International Residential Code and makes no amendment to its reroofing section, Section R908; the Michigan rule set was searched in full and R908 does not appear in it. The base section therefore applies as the International Code Council publishes it. Section R908.3.1.1 lists the conditions under which a new roof may not be laid over an existing one, and the third is "Where the existing roof has two or more applications of any type of roof covering." One existing layer may be covered once; a roof that already carries two layers is torn off to the deck. The same section also bars covering a roof that is water soaked or too deteriorated to serve as a base, and covering "slate, clay, cement or asbestos-cement tile." Chapter 40 of the Grosse Ile Township Code (Building Construction, Secs. 40-1 to 40-16, in three articles) was read in full: it adopts the 2021 International Property Maintenance Code and the CABO code named in adopted_code, designates the Building Official as the enforcing agency, sets fees by the Township Board and refers electrical licensing to the state; it has no roofing provision of its own and amends nothing in Section R908. The Community Development Department pages, building permit application and fee schedule state no layer rule. Grosse Ile's codified Sec. 40-2 adopts the CABO One- and Two-Family Dwelling Code, 1995 edition; this field states the 2015 Michigan Residential Code, which the state act applies throughout the state; Grosse Ile has published no statement naming the edition it enforces; the CABO One- and Two-Family Dwelling Code text was not read (see adopted_code).

Do roofing contractors need a license or registration in Township of Grosse Ile, MI?

Yes.

What building code does Township of Grosse Ile, MI use?

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 Township of Grosse Ile (spelled GROSSE ISLE there) as its own building code enforcer. Grosse Ile's codified Sec. 40-2 (Ord. No. 261, 3-8-1999, amended in its entirety 9-25-2023 by Ord. No. 23-04) adopts the "CABO One- and Two-Family Dwelling Code, 1995 edition"; this directory has not read that text, and whether the codified reference has any effect today is not decided here. This record states the 2015 Michigan Residential Code, which the state construction code act applies throughout the state ("This act and the code apply throughout the state," MCL 125.1508a) and which LARA says remains in effect while the Court of Claims order of July 7, 2025 stands. Grosse Ile has published no statement naming the edition it enforces; its Code of Ordinances Sec. 40-6, read October 11, 2026, says "the Building Official of the Township of Grosse Ile is hereby designated as the enforcing agency to discharge the responsibilities of the Township of Grosse Ile under Act 230 of the Public Acts of 1972".