Michigan Roofing Permits: Requirements for Homeowners and Contractors
Roofing permits in Michigan are mandated by local building authorities—typically city or township building departments—not the state. While the State of Michigan does not issue statewide roofing permits, it establishes baseline requirements through the Michigan Building Code (2021 edition, based on IBC 2021) and the Michigan Energy Code (2021, aligned with IECC 2021). Homeowners and contractors must comply with both state codes and local amendments. Notably, most jurisdictions require a permit for full roof replacements, structural repairs, or changes to roof pitch or materials—though minor repairs (e.g., replacing fewer than 3–5 shingles) may be exempt. Both licensed contractors and DIY homeowners must obtain permits before work begins; unpermitted work may void insurance coverage and complicate future property sales.
Overview
Roofing permits in Michigan are mandated by local building authorities—typically city or township building departments—not the state. While the State of Michigan does not issue statewide roofing permits, it establishes baseline requirements through the Michigan Building Code (2021 edition, based on IBC 2021) and the Michigan Energy Code (2021, aligned with IECC 2021). Homeowners and contractors must comply with both state codes and local amendments. Notably, most jurisdictions require a permit for full roof replacements, structural repairs, or changes to roof pitch or materials—though minor repairs (e.g., replacing fewer than 3–5 shingles) may be exempt. Both licensed contractors and DIY homeowners must obtain permits before work begins; unpermitted work may void insurance coverage and complicate future property sales.
Key Requirements
Homeowners performing their own roofing work must occupy the dwelling as their primary residence and assume full liability for code compliance and safety. Contractors must hold valid Michigan contractor licenses administered by the Michigan Department of Licensing and Regulatory Affairs (LARA), specifically a Residential Builder (RB) or Maintenance & Alteration (M&A) license—depending on scope and value. All roofing work must meet wind-resistance standards (ASCE 7-22), fastening schedules per manufacturer specifications, and underlayment requirements (e.g., ice/water shield in eave overhangs per R905.1.2). Crucially, the Michigan Energy Code mandates minimum attic insulation levels (R-49 for Zone 6) and proper ventilation (1:150 net free area ratio unless balanced 1:300 with ≥50% upper venting). Solar-ready provisions and cool roof reflectance (for low-slope roofs) may also apply locally.
Step-by-Step Process
1. **Determine Jurisdiction**: Identify your local building department (city, village, or township); county-level permitting applies only in unincorporated areas. 2. **Prepare Documentation**: Submit completed application, site plan, product data sheets (shingles, underlayment, vents), energy compliance form (REScheck or COMcheck), and proof of contractor license (if applicable). 3. **Submit & Pay**: File online or in person; some municipalities use ePermitting platforms (e.g., Lansing, Ann Arbor). Review time varies (3–10 business days). 4. **Schedule Inspections**: Required inspections typically include: (a) deck/structural inspection (pre-roofing), (b) underlayment inspection, and (c) final roofing inspection. Scheduling is done via the local portal or phone. 5. **Close Permit**: Upon passing final inspection, the permit is closed and a Certificate of Compliance is issued.
Costs
Permit fees vary widely by jurisdiction and project size—typically $50–$300 for residential re-roofs. Fees are often calculated per square ($1–$5/sq.) or as a flat fee plus surcharges (e.g., $25 plan review, $15 inspection fee). Some communities waive fees for owner-occupied homes if no contractor is involved—but this does not exempt code compliance. Expedited review may incur additional fees.
Common Mistakes
• Skipping the permit entirely—especially for ‘like-for-like’ replacements—despite local ordinances requiring it. • Using non-compliant fasteners or omitting required ice/water shield in valleys and eaves, leading to failed inspections. • Failing to submit energy compliance documentation, causing delays or rejection. • Assuming LARA licensing alone satisfies local registration—many cities (e.g., Detroit, Grand Rapids) require separate contractor business licenses and insurance verification. • Not scheduling inspections at the correct stage (e.g., covering underlayment before inspection), resulting in costly tear-outs.
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Do I need a permit to replace my roof myself in Michigan?
Yes—most Michigan municipalities require a permit for full roof replacement, even for owner-occupants. You must submit plans, comply with the Michigan Building and Energy Codes, and pass all required inspections. DIY exemptions are extremely rare and never apply to structural modifications.
What license does a roofing contractor need in Michigan?
Contractors must hold a valid Michigan Residential Builder (RB) license from LARA for projects over $600. For smaller alterations, a Maintenance & Alteration (M&A) license may suffice—but always verify with your local building department, as some require RB licensure regardless of project size.
Does the Michigan Energy Code affect my roofing project?
Yes. The 2021 Michigan Energy Code requires compliant attic insulation (R-49), balanced ventilation, and reflective roofing for low-slope applications. Roof assemblies must also meet air sealing and thermal bridging requirements—documentation via REScheck is mandatory for permit approval.
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