Do I need a permit for a full bathroom remodel in
Midland, Michigan?

Midland bathroom remodels — the key details

Midland Building Department requires a permit for full bathroom remodels that include fixture relocation, new electrical circuits, new exhaust fans, tub-to-shower conversions, or wall removal/relocation. This rule derives from Michigan Building Code Section R301 and IRC standards that govern structural safety, plumbing trap integrity, electrical GFCI/AFCI protection, and moisture control. The threshold is clear: if the work is cosmetic only (replacing a vanity in the same location, re-tiling existing walls without structural changes, swapping a faucet or toilet without moving the supply/drain lines), no permit is needed. However, any work that touches the structural frame, electrical panel, or plumbing infrastructure requires a permit application. Midland's Building Department processes applications Monday–Friday, 8 AM–5 PM, and they maintain an online portal for initial submission, though many applicants still prefer in-person filing at City Hall to clarify technical details with the permit technician on the spot.

A unique feature of Midland's permit process is their use of a phased inspection system that front-loads the rough phase. Once your permit is issued, you must schedule a rough plumbing inspection (before walls are closed) and rough electrical inspection (same window) to verify trap slope, vent-stack routing, GFCI/AFCI configuration, and correct wire gauge for circuits. Failure to call for rough inspection before drywall closure means tear-out and re-inspection at your expense. Midland also requires that any exhaust fan ductwork be sized per IRC M1505 (typically 4-inch minimum diameter), terminated to exterior (not into attic, which is a common violation), and include a damper to prevent backdraft. For shower/tub conversions or new waterproofing assemblies, the Inspector will ask to see product data for the membrane system (e.g., Schluter KERDI, Ardex, or equivalent) and will spot-check joints and penetrations during rough inspection. Pre-1978 homes trigger a lead-paint notice requirement; the city will include this in your permit packet.

Electrical permits are bundled with the general building permit in Midland; you do not pull a separate electrical permit. However, the Inspector will enforce NEC 406.4, which requires GFCI protection on all bathroom branch circuits within 6 feet of a sink, tub, or shower. Many applicants specify GFCI outlets, but code also allows GFCI breakers (often cleaner in a full remodel). New exhaust fans must tie into a dedicated circuit (or share a circuit with the vanity light only, per code), not a general lighting circuit. If you are adding a radiant floor heating system or heated towel rack, those require their own AFCI/GFCI-protected circuits. The permit application will ask for an electrical plan showing all new circuits, breaker assignments, and wire routing; the Inspector expects this to be legible (handwritten is fine, but must be clear) and cross-referenced to the plumbing plan.

Plumbing is the most code-intensive part of a bathroom remodel in Midland. IRC P2706 governs drainage-fitting angles and slope; trap arms (the run from fixture trap to vent stack) cannot exceed 3 feet without adding a secondary vent. If you are relocating a toilet, the rough-in distance (center of drain to wall) is universally 12 inches, but you must verify your existing stack location and ensure the new drain line does not exceed slope limits (typically 1/4 inch drop per 1 foot of horizontal run, up to 1/2 inch). Vanity drains must slope toward the main stack, and if you are running drain lines under the floor (common in single-story homes in Midland), you need to ensure proper clearance above the frost line (42 inches in most of Midland) or use heat tape if the lines are at risk. Trap-arm violations are the #1 reason Midland inspectors issue corrections, so have a plumber verify this in your plans before submitting. The tub/shower valve must be pressure-balanced (per IRC P2722.1) to prevent scald hazard; just specifying 'Moen' or 'Delta' is not enough — the permit will list the specific valve model required.

Midland's fee structure for bathroom remodels typically ranges from $200 to $800 in permit fees, calculated as a percentage of declared project valuation. A gut remodel with fixture relocation, new electrical, and waterproofing might be valued at $15,000–$25,000, resulting in a $250–$400 permit fee. The city accepts online payment (credit card with convenience fee) or check/cash at the Building Department office. Once issued, the permit is valid for 180 days; if work is not substantially underway within that window, you may need to reapply or request an extension (typically $50). Plan review normally takes 5–10 business days for a complete application; incomplete applications are returned with a red-line list, adding 1–2 weeks to the timeline. Inspections are typically scheduled 24–48 hours in advance by calling the Building Department; the rough inspection usually occurs within 3–5 days of your call, and final inspection (after all work is complete) within 1 week. Certificate of occupancy or final sign-off is issued on-site after final inspection passes.

Three Midland bathroom remodel (full) scenarios

Waterproofing and the tub-to-shower conversion trap in Midland bathrooms

A tub-to-shower conversion in Midland triggers IRC R702.4.2 waterproofing requirements that many homeowners and even some contractors miss. Converting an existing bathtub alcove to a shower means you must install a waterproofing assembly — not just tile backer board and thin-set, but a complete membrane system (such as Schluter KERDI, Ardex MEM, or equivalent) that extends at least 6 inches above the finished shower head height and 6 inches out from the shower curb on the floor. Midland Building Inspector will review your product data and will expect to see the membrane lapped correctly at all seams, joints sealed with the manufacturer's specified sealant, and the drain pan bonded with a setting bed or pre-formed pan. Many homeowners try to use cement board alone (an old practice) and fail rough inspection.

The shower base slope is another detail Midland inspectors catch frequently. The floor must slope toward the drain at a minimum of 1/8 inch per foot. A typical 3-foot-wide shower might have 3/8 inch of slope from the far corner to the drain; if you pour a flat floor and rely on a linear drain, code still requires minimum slope, and the inspector will likely cite a flat or reverse-sloped floor during rough inspection. Midland's climate (42-inch frost depth, glacial till soil, and winter temperatures below freezing) makes moisture control especially critical; any water that pools or seeps behind the membrane can freeze and cause structural damage to the subfloor. This is why the city enforces waterproofing strictly.

The pre-slope (mortar base under the waterproofing membrane) and bond-beam details are also reviewed. If you are using a pre-formed shower pan (fiberglass or acrylic), it must sit on a setting bed or mortar bed to ensure the slope is correct and the pan is fully supported. The membrane or pan edges must extend up the walls at least 6 inches above the finished threshold, and the curb itself (if any) must be properly waterproofed and sealed. Midland's Inspector will ask to see this during rough inspection, and will flag any voids or improper sealing. If you are uncertain about the assembly details, bring the manufacturer's installation guide to the rough inspection appointment; the inspector can confirm compliance on the spot.

GFCI, AFCI, and electrical circuits in Midland bathroom remodels

Midland Building Department enforces NEC Article 406.4 and 210.52, which require all bathroom branch circuits to have GFCI protection within 6 feet of a sink, tub, or shower. The code does not require a dedicated circuit for the bathroom; you can run the vanity light and exhaust fan on a shared 15-amp circuit if they do not exceed 1,000 watts combined. However, a dedicated 20-amp circuit for bathroom receptacles is the modern standard and is what most inspectors prefer to see (it is not required by code, but it avoids disputes). For a full remodel, plan at least two circuits: one 20-amp for receptacles (outlets near the vanity), and one 15-amp for the exhaust fan (if not included on the vanity circuit). If you are adding a heated towel rack, that should have its own dedicated circuit (typically 20-amp).

GFCI protection can be achieved in two ways: a GFCI outlet (which protects all downstream outlets on the same circuit) or a GFCI breaker in the electrical panel (which protects the entire circuit). Midland inspectors accept both methods; the choice is yours. A GFCI outlet is cheaper upfront ($25–$50 per outlet) and allows you to keep your existing panel intact; a GFCI breaker (about $80–$150) is cleaner electrically and is preferred in many new installations. If your bathroom is being upgraded with a new subpanel (common in full remodels), specify GFCI and AFCI breakers for the bathroom circuits to future-proof the installation.

AFCI (Arc Fault Circuit Interrupter) protection is also required for all branch circuits in bedrooms and, by recent NEC updates, in bathrooms as well (though Midland may not yet require AFCI in bathrooms for older code cycles; verify with the permit technician). AFCI protection detects dangerous arc faults in wiring and trips the breaker before a fire can start. For new circuits in a bathroom remodel, combining GFCI and AFCI protection (either with combination GFCI/AFCI outlets or dual-function breakers) is the safest and most code-compliant approach. Midland's electrical inspector will verify that all bathroom outlets are GFCI-protected before issuing final approval; failure to do so results in a correction notice that delays final sign-off.

Common questions