Do I need a permit in Dearborn Heights, MI?
Dearborn Heights sits in both climate zones 5A and 6A, split roughly north-south across the city. That matters for foundation depth: your frost line is 42 inches — which means deck posts, pool barriers, and garage additions all need footings that bottom out below 42 inches, per Michigan's adoption of the 2015 IBC with state amendments. The city's Building Department processes permits through a mix of over-the-counter and plan-review submissions. Most residential permits move quickly if filed correctly the first time; rejections almost always come from incomplete site plans (missing property lines, setback dimensions, or soil-bearing calculations for footings). Owner-occupied properties can use owner-builder permits for work you do yourself, but you still pull the permit before starting — not after. The online permit portal exists but requires a phone call to the city to access or confirm your property ID. This page walks you through the most common Dearborn Heights projects, what triggers a permit, and what the Building Department actually cares about.
What's specific to Dearborn Heights permits
Dearborn Heights adopted the 2015 International Building Code with Michigan amendments, which means you're working to that edition statewide — no local flavor on major structural rules. The 42-inch frost depth is strict: deck footings, foundation walls, and pool barriers all must penetrate below 42 inches. If you're in the sandy-soil north section of the city, your building inspector may ask for a soil-bearing report (common for decks or additions on sand — glacial till down south is more predictable). Don't skip this upfront; a footing inspection rejection in October costs weeks of rework.
The online permit portal is available, but most homeowners still file in person or by phone. Call the Building Department to confirm your property ID and submission method before you prep documents. The city processes routine permits (fences, small decks, water-heater swaps) over-the-counter in 2-3 business days if everything is complete. Major projects (two-story additions, pools, new garages) go to plan review and typically take 3-4 weeks. The common rejection for Dearborn Heights: incomplete site plans. You need property lines, setback dimensions (your lot boundary to your proposed structure), and footing depth noted in writing — not just guessed.
Permit fees in Dearborn Heights follow the state model: a base filing fee plus a percentage of estimated project value. Deck permits typically run $100–$250 depending on square footage and complexity. Fence permits are flat-fee (usually $50–$75). Additions and pools are assessed at 1.5–2% of project valuation — so a $50,000 addition might carry a $750–$1,000 permit fee. Plan-review expediting is sometimes available; ask when you call.
The Building Department inspects at key points: footing (before you pour concrete), framing (before drywall or siding), and final (before you occupy or close the project). For deck work, you'll typically get a footing inspection and a framing inspection. For additions and major projects, you'll also get rough-in inspections for plumbing, electrical, and HVAC if those trades are involved. Inspections are usually scheduled within 1-2 business days of your request.
Owner-builder permits are allowed for owner-occupied residential work in Michigan. You pull the permit yourself (no licensed contractor required), but the work must be at your primary residence and you can't pull more than a certain number of permits per year statewide (typically 1-2). If you sell the house within a year of project completion, you may need to disclose owner-builder work to the buyer — and some lenders won't finance a home with recent owner-builder permits. Hire a licensed contractor if you have doubt; the permit fee savings ($200–$500) isn't worth a financing or sale problem later.
Most common Dearborn Heights permit projects
These are the projects that trigger the most permit questions in Dearborn Heights. Each has local quirks — frost depth, setback rules, or inspection timing — that can slow you down if you miss them upfront.
Decks
Decks over 200 square feet or elevated more than 30 inches require permits. Your 42-inch frost depth means deck posts must penetrate below 42 inches — no shallow footings. Most Dearborn Heights decks get a footing inspection and a framing inspection.
Fences
Fences over 6 feet in side or rear yards typically need permits. Front-yard fences over 4 feet require variance review. Pool barriers always need a permit regardless of height. Flat fee, simple filing.
Roof replacement
Most reroofs in Dearborn Heights don't require permits if you're not changing the roof structure or height. Full roof replacement (shingles, underlayment, flashing) is usually permit-exempt. New roof structure (trusses, framing) requires a permit.
Room additions
Any addition or detached/attached garage over 200 square feet requires permits, electrical permits, and usually plumbing. Plan review averages 3-4 weeks. Footing depth (42 inches) and setback compliance are the usual sticking points.