A verified guide to Michigan deck permit rules: statewide code, fees, plans required, state-specific quirks, and how top cities handle applications.
Statewide Code
2015 Michigan Residential Code (MRC), based on the 2015 IRC with Michigan-specific amendments. Chapter 11 energy provisions amended to reference 2018 IRC effective 10/4/2021.
Frost Line
42 inches minimum statewide (R403.1.4 requires exterior footings to extend 42 inches below actual grade). Local officials may require deeper footings based on freezing-degree days: Detroit, Lansing, Grand Rapids, Ann Arbor use 42"; Traverse City and much of Northern Lower typically require 48"; most Upper Peninsula counties require 48-60". Michigan R403.1.4 also exempts freestanding decks "not supported by a dwelling" from frost-depth footings.
Guard Rule
Guards required on any deck walking surface more than 30 inches above grade, measured per R312.1.1. Minimum guard height is 36 inches per R312.1.2 of the 2015 Michigan Residential Code. Baluster spacing must reject a 4-inch sphere. Handrails on stairs with four or more risers are required at 34-38 inches.
Typical Permit Cost
Typical range for a residential deck permit in Michigan is roughly $80-$400 total. Most suburban Southeast Michigan cities fall in the $100-$250 range once base permit, plan review, and zoning fees are combined. Rural and smaller municipalities are often at the low end; Detroit, Ann Arbor, and Grand Rapids trend toward the high end once plan review is added.
Processing Time
Typical plan review for a residential deck: 1-3 business days in Detroit (BSEED structural plan review), roughly 2 weeks in Sterling Heights and other suburban BS&A Online cities, 1-2 weeks in Grand Rapids/Ann Arbor/Lansing for standard submittals. Same-day over-the-counter approval is possible in some smaller jurisdictions for simple decks.
Michigan Department of Licensing and Regulatory Affairs (LARA) - Bureau of Construction Codes (BCC)
The Michigan Bureau of Construction Codes promulgates statewide codes and must approve any local amendments. Adoption of the 2021 MRC and 2021 IECC residential provisions was set to take effect August 29, 2025, but is delayed by a July 7, 2025 court order; the 2015 MRC remains in force statewide as of April 2026. Local building officials (not LARA) issue residential deck permits in the great majority of jurisdictions.
Official sourceGround snow load ranges from roughly 20-30 psf in Southeast Michigan (Detroit, Ann Arbor, Warren, Sterling Heights) and 30-40 psf in Mid-Michigan (Lansing, Grand Rapids, Flint) up to 70 psf in Marquette and other Upper Peninsula locations. The Keweenaw Peninsula ("Copper Country") can exceed 90 psf. Seismic Category A-B. Ultimate design wind speed 115 mph statewide (Risk Category II).
Exempt from permit does not mean exempt from the code. Work still must comply with the edition in force at your address.
Michigan R403.1.4 explicitly states "decks not supported by a dwelling need not be provided with footings that extend below the frost line." A truly freestanding (non-ledger) deck can legally use surface footings if the design carries the loads. Attached decks still require 42-inch-minimum frost footings.
Michigan is one of the few states that licenses residential builders at a $600 project threshold. Any deck contractor with a total job over $600 must hold a LARA Residential Builder license or a carpentry-scope M&A contractor license. Pulling a homeowner permit and hiring an unlicensed contractor can expose both parties to penalties.
LARA finalized rules adopting the 2021 MRC and 2021 IECC residential provisions with an effective date of August 29, 2025, but a July 7, 2025 Michigan court order delayed that adoption. As of April 2026 the 2015 MRC remains the governing residential code, so homeowners and contractors should design to 2015 IRC-based requirements (not 2021 IRC).
Even while the rest of the code remained on the 2015 cycle, Michigan updated the residential energy chapter to the 2018 IRC / 2015 IECC basis effective October 4, 2021. This matters for covered/enclosed decks and three-season rooms that touch the thermal envelope.
Even permit-exempt decks are subject to local zoning setbacks, lot coverage, and historic-district review. Cities like Grand Rapids require applicants to cite Section 5.2.05.F.3 of the Grand Rapids Zoning Ordinance on the site plan.
Detroit BSEED charges a base residential building permit fee plus plan review. Deck permits are submitted through the eLAPS online portal. Detroit follows the 2015 Michigan Building Code and 2015 MRC.
Detroit BSEED runs its own six-step eLAPS/ePlans workflow and, per city policy, larger projects typically require drawings sealed by a Michigan-licensed architect or engineer. Structural plan review averages 1-3 business days for simple residential decks.
Permit portalFee set from project valuation. Deck applications accepted in person at the Development Center (1120 Monroe Ave NW, 3rd Floor) or through the Citizen Access portal; cash, card, or check accepted.
Grand Rapids explicitly does NOT accept mailed, emailed, or faxed deck applications - paper submittals must be delivered in person. Applications must also cite compliance with Grand Rapids Zoning Ordinance 5.2.05.F.3.
Permit portalPublished residential fee schedule; a basic deck typically combines an $80 building permit, a $40 zoning fee, and a $50 plan review fee for roughly $170 total.
Warren requires a Michigan-licensed Residential Builder or M&A contractor for any hired work, and separate mechanical/electrical permits if the deck includes lighting circuits or a gas line for a grill.
Permit portalDeck permit fees are roughly $25-$100 depending on size/valuation. Online application available through the Sterling Heights BS&A Online portal.
Freestanding decks that are 30 inches or less above grade are exempt from a building permit, but ANY attached deck (regardless of height) requires a building permit in Sterling Heights.
Permit portalPer the 2025 Ann Arbor building fee schedule, projects valued up to $1,000 have a $100 base permit (includes one rough and one final inspection). A plan examination fee equal to 20% of the building permit fee applies to both residential and commercial projects.
Applications go through the STREAM online permit system. A small detached deck (<200 sq ft, <30 in above grade, >10 ft from the house) still typically needs a zoning compliance permit even when the building permit is waived.
Permit portalLansing Building Safety Office charges a minimum $120 permit fee. Plan review is 20% of the permit fee for residential work valued over $3,000.
Homeowners may perform and permit work on their own single-family residence but must submit a homeowner affidavit; otherwise contractors must hold a current Michigan Residential Builder or M&A license.
Permit portalPer the City of Flint Master Fee Schedule, building permit fees start at $140 for projects valued $1-$2,000, plus $27 per additional $500 of valuation beyond $2,000.
The City of Flint and the Charter Township of Flint are separate jurisdictions with different fee schedules and application portals. Confirm your address sits in the City before applying.
Permit portalDearborn charges a $100 Shed/Deck/Ramp/Gazebo permit fee plus a $100 permit processing fee and residential plan review at $1 per $1,000 of construction cost (minimum $15, maximum $150).
Contractors must be both State of Michigan-licensed and separately registered with the City of Dearborn before a permit is issued. Most Dearborn permit types are now submitted through BS&A Online.
Permit portalYes, in nearly every case. Under 2015 Michigan Residential Code R105.2, a deck is only exempt if it is 200 square feet or less, is no more than 30 inches above grade at any point, is not attached to the dwelling, sits at least 36 inches away from the dwelling or any accessory structure, and does not serve a required ingress/egress door. Most decks miss at least one of those tests and therefore require a building permit from the local building department.
The 2015 Michigan Residential Code (MRC), based on the 2015 IRC with Michigan amendments, is the current statewide residential code as of April 2026. Adoption of the 2021 MRC was scheduled for August 29, 2025 but was delayed by a July 7, 2025 court order.
MRC R403.1.4 requires all exterior footings to extend at least 42 inches below actual grade. Detroit, Grand Rapids, Lansing, and Ann Arbor enforce 42 inches; Traverse City and much of the Northern Lower Peninsula push to 48 inches; most Upper Peninsula counties require 48-60 inches. A truly freestanding deck (no ledger to the house) is exempt from frost-depth footings under R403.1.4, though local officials may still require full-depth footings for stability.
A 36-inch guard is required on any deck walking surface more than 30 inches above grade (MRC R312.1). Balusters must reject a 4-inch sphere. On stairs with four or more risers, a graspable handrail is required at 34-38 inches above the tread nosings.
Yes, if the job exceeds $600. MCL 339.2403 requires anyone taking a residential construction contract with aggregate value of $600 or more (labor plus materials) to hold a Michigan Residential Builder license or a Maintenance & Alteration (M&A) contractor license in a carpentry/carpentry-related trade issued by LARA.
Most Michigan jurisdictions charge $80-$400 all-in for a residential deck permit. Examples: Warren roughly $170 (permit + zoning + plan review), Sterling Heights $25-$100, Dearborn about $200 base, Ann Arbor $100 plus 20% plan review, Lansing $120 minimum. Detroit and Grand Rapids calculate fees off project valuation and typically come in at the high end of the range.
Detroit BSEED targets 1-3 business days for straightforward residential submittals. Most suburban BS&A Online jurisdictions (Sterling Heights, Dearborn, Flint Township, many others) turn deck reviews around in 1-2 weeks. Grand Rapids, Ann Arbor, and Lansing are generally 1-2 weeks for a typical residential deck.
Usually yes. Most Michigan cities run a parallel zoning review that checks setbacks, lot coverage, and historic-district overlays. Grand Rapids requires applicants to cite Zoning Ordinance 5.2.05.F.3 on the site plan; Warren charges a separate $40 zoning fee; Ann Arbor requires zoning compliance even for permit-exempt detached decks.
Estimate your deck cost and find a verified Michigan deck builder who pulls permits and stands behind inspected work.
Join homeowners who get free insights on project costs, permit changes, and money-saving tips. No spam — unsubscribe anytime.
Free forever. No credit card. Unsubscribe in one click.
Sources
Data verified April 2026. Fees, processing times, and code editions are subject to change. Always verify with your local building department before starting work.
This guide is informational. Michigan deck permit rules vary by city and county within the state framework. Verify current requirements with your local building department before starting work. Not legal or engineering advice.