Home renovation permits in Southeast Michigan: what you need and how to get them
Permits are the part of a renovation nobody gets excited about, but they matter more than most homeowners realize. A permit isn’t red tape for its own sake. It’s a record that says a licensed inspector verified your renovation meets Michigan’s building codes for structural safety, electrical safety, plumbing integrity, and fire protection. Skip the permit, and you risk code violations that surface when you sell the house, insurance claims that get denied because the work wasn’t permitted, and renovation failures that could have been caught by an inspector.
I’ve pulled hundreds of permits across Washtenaw, Wayne, Oakland, Macomb, Livingston, and Monroe counties. Each municipality handles permits differently, and the differences matter for your timeline and your budget. Here’s what you need to know.
When you need a permit in Michigan
The general rule in Michigan: if the work involves structural changes, electrical modifications, plumbing changes, or HVAC modifications, you need a permit. That covers most of what we do. A kitchen remodel that moves a wall, adds an outlet, or relocates a sink needs permits for all three disciplines: structural, electrical, and plumbing. A basement finishing project needs permits for framing, electrical, plumbing if you’re adding a bathroom, and sometimes mechanical if you’re extending HVAC ductwork.
Work that typically does not require a permit includes cosmetic updates like painting, replacing cabinet hardware, swapping light fixtures on existing circuits (no new wiring), and installing flooring over an existing subfloor. If you’re unsure, the safe call is to check with your municipality. We handle this for every project we do, so our clients never have to make that judgment call themselves.
The permit application process
Most Southeast Michigan municipalities have moved to online permit portals, though some smaller townships still use paper applications. The typical process looks like this: submit a permit application with construction drawings showing the proposed work. Pay the permit fee (usually 1% to 2% of the project value). Wait for plan review. Receive the permit. Post it at the job site. Schedule inspections as work progresses. Receive final inspection sign-off.
The drawings we submit for permits are more detailed than what you’d see in a typical architectural set. Michigan plan reviewers in Ann Arbor and Birmingham are thorough. They want to see structural load paths, electrical circuit counts, plumbing fixture unit calculations, and energy code compliance. Incomplete submissions get returned for corrections, which adds weeks to the timeline. Our experience with these specific jurisdictions means our first submissions are almost always complete, which keeps permitting on schedule.
Permit timelines by municipality in Southeast Michigan
This is where local knowledge matters. Permit review timelines vary widely across our service area, and they change seasonally. Here’s what we typically see based on our project history across hundreds of permit applications.
Ann Arbor processes residential permits in 10 to 15 business days during normal periods. During peak season (March through June), it can stretch to 20 business days. Ann Arbor’s building department is thorough and occasionally requests clarification on structural details, especially for projects in historic districts like the Old West Side. If your project is in a historic district, add two to four weeks for the Historic District Commission review on top of the building department timeline.
Birmingham runs 15 to 20 business days for residential permits. Birmingham’s plan review team pays close attention to setback requirements and lot coverage calculations, especially for home additions and second-story additions in established neighborhoods. If your addition pushes the lot coverage above 30%, expect additional review time and possibly a variance hearing.
Canton Township and Plymouth share a building department, and turnaround is usually 10 to 15 business days. Novi processes permits in 10 to 18 business days. Livonia and Northville both average about two weeks. The smaller townships in Livingston County and Monroe County often process permits faster because they receive fewer applications.
Permit costs across Southeast Michigan
Permit fees are calculated differently by each municipality, but the most common structure is a base fee plus a percentage of the estimated project value. For a $100,000 kitchen renovation, permit fees across our service area range from $800 to $1,800. For a $250,000 home addition, fees run $1,500 to $3,500. These fees cover the permit itself plus all inspections during construction.
Some municipalities charge separate fees for each trade (building, electrical, plumbing, mechanical). Others bundle them. Ann Arbor charges separate trade permits. Canton bundles them. Birmingham charges by trade but offers a “comprehensive residential” permit for projects that involve all four trades. We know each municipality’s fee structure because we’ve submitted permits to all of them, and we include the exact permit costs in your project budget during the design phase so there are no surprises.
The inspection sequence during construction
Pulling the permit is just the start. During construction, the work gets inspected at specific milestones. The typical inspection sequence for a basement finishing project looks like this: rough framing inspection (after walls are framed but before drywall), rough electrical inspection, rough plumbing inspection (if adding a bathroom), insulation inspection, and final inspection. Each inspection must pass before the next phase of work can proceed.
Failed inspections aren’t the disaster they sound like. In my experience, about 15% of rough inspections require a correction on the first pass. Common reasons: an outlet box is six inches too far from a countertop edge per code, a junction box isn’t accessible, a plumbing vent doesn’t terminate in the right location. These are minor corrections that our crews fix the same day, and the inspector comes back within 48 hours for the re-inspection. The key is having a crew that knows the code and builds to it the first time. Our pass rate on first inspections runs above 90%.
For egress window installations in basement bedrooms, the inspection includes verifying the window opening dimensions (minimum 5.7 square feet), the sill height (maximum 44 inches from the floor), and the window well dimensions. Michigan Building Code Section R310 is specific about these requirements, and inspectors measure precisely. We template every egress opening before we cut the foundation wall to make sure the finished dimensions meet code.
What happens if you renovate without permits
I have to address this because some homeowners ask about it. Renovating without permits in Michigan is a bad idea for three reasons. First, if you sell the house, the buyer’s home inspector may identify unpermitted work, and the buyer’s bank may require permits and inspections before approving the mortgage. That means you’re paying for permits, corrections, and re-inspections at the worst possible time: during a real estate transaction with a closing deadline.
Second, if something goes wrong with unpermitted work and causes damage, your homeowner’s insurance may deny the claim. Unpermitted electrical work that causes a fire is the most common scenario. The insurance company will check whether permits were pulled, and if they weren’t, you’re exposed.
Third, Michigan municipalities can issue stop-work orders and fines for unpermitted construction. The fines vary, but in Ann Arbor, an unpermitted renovation can result in double permit fees plus daily fines until the work is inspected and approved. It’s not worth the risk. The permit costs are a tiny fraction of the project budget, and the inspections provide a third-party quality check on the work.
How we handle permits for you
At Wright’s Renovations, permit management is included in every project. We prepare the permit drawings from our design documents. We submit the application. We pay the fees on your behalf (rolled into the project cost). We schedule every inspection. We address any corrections. You never have to visit a building department, wait for an inspector, or figure out which inspections are required for your project.
This is one of the advantages of working with a licensed, insured design-build firm. Our Michigan residential builder’s license (#2102236887) authorizes us to pull permits in every municipality in our service area. A handyman or unlicensed contractor cannot legally pull a building permit in Michigan, which means either you pull it yourself (and take on the liability) or the work goes unpermitted.
If you’re planning a renovation and want to understand the permit requirements for your specific project and municipality, schedule a consultation. We’ll tell you exactly what permits are needed, how long they’ll take, and what they’ll cost. You can also browse our portfolio to see completed projects that went through the full permit and inspection process across Southeast Michigan.
Historic district permits: a separate process
If your home is in a designated historic district, you face an additional layer of review beyond the standard building permit. Ann Arbor has the most active historic districts in our service area, including the Old West Side, the State Street Area, and the Division Street Historic District. In these areas, any exterior change visible from the street requires Historic District Commission approval before you can apply for a building permit.
The HDC review process adds two to six weeks to your timeline depending on the scope. Replacing windows with the same style and material is usually a staff-level approval (one to two weeks). Adding a home addition visible from the street requires a full commission hearing, which meets monthly. If you miss the submission deadline for one meeting, you wait for the next month’s meeting. We factor HDC timelines into every project we bid in historic districts because missing that deadline can push your entire construction start by a month.
The HDC process also affects material choices. In the Old West Side, replacement windows must match the original window profile. Fiber cement siding must replicate the original wood clapboard dimensions. Even the paint color on trim visible from the street is subject to review in some districts. Our design team knows these requirements from experience and selects materials that will pass HDC review on the first submission.
Energy code requirements that affect your budget
Michigan adopted the 2015 Michigan Energy Code, which applies to all permitted residential work. For kitchen renovations and bathroom remodels, the energy code typically only applies if you’re modifying exterior walls or replacing windows. For additions and second-story additions, the entire new structure must meet current energy code requirements for insulation R-values, window U-factors, and air sealing.
In practice, this means your addition walls need R-21 insulation minimum, your ceiling needs R-49, and your windows need to meet specific thermal performance ratings. For basement finishing, exterior foundation walls need R-15 continuous insulation or R-19 cavity insulation. These requirements add cost compared to older construction standards, but they also mean lower heating and cooling bills once the project is complete. Michigan winters punish poorly insulated spaces, so the energy code requirements exist for good reason.
We build every project to meet or exceed code requirements because inspectors will check, and because proper insulation and air sealing are investments that pay for themselves within three to five years through energy savings. For sunroom additions and screened porch conversions, the energy code implications are especially significant because glass-heavy spaces lose heat fast if the glazing doesn’t perform.
Permits for specialty projects in Michigan
Some renovation types trigger additional permitting requirements beyond the standard building, electrical, plumbing, and mechanical disciplines. Egress window installations require a separate structural review if you’re cutting into the foundation wall. Deck construction requires a permit in every Michigan municipality we work in because decks are considered structures with specific load, height, and railing requirements. Outdoor kitchens with gas lines require both a building permit and a mechanical permit for the gas connection.
Commercial renovations follow a different permit track entirely, with additional requirements for ADA compliance, fire separation, egress calculations, and occupancy classification. Commercial permits take 25% to 50% longer than residential permits in most municipalities and require more detailed drawings. If you’re planning a commercial project, factor four to eight weeks for permitting depending on the municipality and the scope.
The bottom line on permits: they protect you, they’re required by law for most renovation work, and they don’t have to slow your project down if your contractor knows how to manage them. We’ve built our permitting process into the overall project timeline so that permits never sit on the critical path. By the time your permit is approved, your materials are ordered, your schedule is built, and your crew is ready to start. That’s the benefit of working with a firm that pulls permits every week across six Southeast Michigan counties.
Common permit questions Michigan homeowners ask
Do I need a permit to finish my basement? Almost always, yes. Basement finishing involves framing, electrical, and often plumbing. All three require permits. The only exception is cosmetic work like painting exposed walls or laying floating floor over concrete with no electrical or plumbing changes.
Can I pull the permit myself? Technically, yes. Michigan homeowner exemptions allow you to pull a permit for work on your own primary residence. But you become the contractor of record, which means you schedule inspections, meet code, and accept liability. Most homeowners who try this underestimate the time commitment and code knowledge required. When you work with a licensed design-build firm, the permit responsibility stays with us.
Do permits expire? Yes. Most municipalities issue permits valid for 180 days. If construction hasn’t started within that window, the permit expires and you reapply. This rarely affects our projects because we don’t pull permits until pre-construction planning is complete and we’re ready to start. But if you’re managing your own renovation with a separate contractor, keep the expiration date in mind.
