Do I need a permit for a full bathroom remodel in
De Pere, Wisconsin?

De Pere bathroom remodel permits — the key details

De Pere requires a permit for any bathroom remodel that involves plumbing relocation, electrical circuit additions, or fixture conversion (tub to shower, or vice versa). The threshold is straightforward: if the fixture moves from its current drain location, or if new wiring must be run, you need a permit. If you're replacing a toilet in place, swapping a vanity for an identical footprint unit, or re-tiling the existing shower surround without touching the drain or vent, no permit is required. The City of De Pere Building Department issues permits through a standard over-the-counter process on weekdays; you submit an application (form available on the city website or in person), a site plan showing the bathroom layout, and a rough plumbing and electrical plan. For owner-builders, you'll need to provide your name and proof of owner-occupancy; contractors must be licensed with the State of Wisconsin. The permit fee is typically $200–$500 depending on the valuation of the work (the city calculates this as a percentage of estimated labor and materials). Most bathroom remodels fall into the $5,000–$25,000 valuation band, yielding permits in the $300–$400 range.

The most common code trigger in De Pere bathrooms is GFCI/AFCI protection. Per the National Electrical Code (NEC 210.8), all bathroom outlets within 6 feet of a sink must be GFCI-protected, and the entire bathroom circuit should have AFCI (Arc-Fault Circuit Interrupter) protection at the breaker. De Pere inspectors expect to see this clearly marked on the electrical plan before rough-in inspection — a common rejection is an unmarked breaker or a GFCI outlet that doesn't protect downstream receptacles. If you're adding a new exhaust fan, the duct must be sized per IRC M1505 (minimum 50 CFM for a bathroom under 100 square feet, 1 CFM per square foot for larger baths) and must terminate to the outdoors, not into the attic or soffit. The duct must also be sealed at the damper and insulated if it runs through an unconditioned space (attic, crawlspace), which prevents condensation drip-back. This detail is often overlooked by DIY installers and results in a failed rough-in inspection. De Pere also requires that any new vent stack or drain line below the rim joist must account for the 48-inch frost depth in Zone 6A; if your new drain line is shallower than that, frost heave can crack the line, so the inspector will flag it. Plan for this constraint if you're relocating a toilet or vanity with a floor drain.

Shower waterproofing is another high-friction area. If you're converting a tub to a shower or installing a new shower surround, IRC R702.4.2 requires a complete waterproofing assembly: either a pre-fabricated shower pan (ABS, PVC, or acrylic) or a site-built system with cement board or drywall, a liquid waterproofing membrane, and sealed seams. De Pere inspectors will ask you to specify this on the plan or provide product specs; 'we'll use good tile and caulk' is not adequate. Cement board + RedGard or similar liquid membrane is the industry standard and easiest to get approved; other systems (Kerdi, Wedi board, etc.) require product documentation. The membrane must extend at least 6 inches above the tub rim or shower valve height and must be installed before tile. If you're simply re-tiling an existing shower surround (no waterproofing change), this is typically surface-only work and does not require a permit. However, if you're exposing old drywall and find mold or water damage, the inspector may require remediation and re-waterproofing, which then triggers permit-level work.

One local quirk: De Pere sits in FEMA flood zone X (low flood risk) for most of the city, but some parcels are in flood zone AE or AEH. If your home is in a flood zone, the city requires that all new mechanical systems, electrical panels, and water heaters be elevated above the base flood elevation plus 1 foot freeboard. A bathroom remodel that includes a new water heater in the basement might trigger this requirement, which could add cost. Confirm your flood zone on the FEMA map before design. Also, if your home was built before 1978, Wisconsin Statute 101.144 requires lead-paint disclosure and safe-work practices during renovation; the city does not enforce this directly, but your contractor is liable, and you should ensure they follow EPA RRP (Renovation, Repair, and Painting) rules if disturbing painted surfaces.

The inspection sequence for a full bathroom remodel is: rough plumbing (drain, vent, supply lines in place, before walls are closed), rough electrical (wiring and boxes installed, before drywall), framing (if walls are moved), drywall, and final (fixtures installed, surfaces finished, all systems operational). De Pere typically schedules inspections within 2–3 business days of your request, though you may need to coordinate with your contractor's schedule. The plan-review phase (before you start work) usually takes 5–10 business days; if the plan is incomplete or fails to address GFCI, exhaust vent termination, or waterproofing, the city will issue a 'corrections required' letter, adding another 3–5 days once you resubmit. If you're in a rush, contact the Building Department before submitting to pre-screen your plans with the inspector — this informal pre-review often prevents rejections and can save 1–2 weeks.

Three De Pere bathroom remodel (full) scenarios

De Pere's frost-depth rule and what it means for bathroom drains

Wisconsin sits in climate zone 6A, and De Pere's frost depth is 48 inches — the deepest point at which the ground freezes in winter. If you're relocating a toilet, vanity, or any fixture with a floor drain, and that new drain line runs below the rim joist or slab, it must go deeper than 48 inches to be safe from frost heave. Frost heave occurs when soil moisture freezes and expands, pushing up on shallow pipes and cracking them. De Pere inspectors are trained to check this and will reject a rough-plumbing plan that shows a drain line at 36 inches depth in unprotected soil.

In most De Pere basements and crawlspaces, the rim joist sits at grade, and drains below the rim run through glacial-till soil — typically clay and sand mixed, sometimes with large stones. This dense soil drains slowly, which means you can't just rely on slope and hope for the best. Instead, you have two options: bury the line at least 48 inches (often impractical if you're tying into an existing waste stack at 12 inches), or use an anti-freeze trap or insert a sanitary tee with a 1/4-inch slope upward from the trap to the vent (creating a trap seal that survives freezing). Most plumbers choose the first option — running the new line at a slope deeper than 48 inches before tying into the main stack. If your bathroom is on the second floor and the drain drops through the rim joist to the basement, you'll need to bury it deep or wrap it. Ask your plumber to clarify the frost-depth path on the plan; if they don't mention it, flag it with the Building Department during plan review.

North-side De Pere properties, especially those near the Fox River valley, can have wetter soil and higher water tables, which exacerbates frost heave risk. If your lot is on the north side or in a low spot, the inspector may require additional details (drainage slope, insulation, or a sealing tape) to protect the line. Confirm your property's elevation and drainage pattern with your contractor before finalizing the plumbing plan.

GFCI and AFCI protection in De Pere bathrooms — what the inspector checks

De Pere strictly enforces NEC 210.8, which requires GFCI (Ground Fault Circuit Interrupter) protection for all bathroom receptacles within 6 feet of the sink, tub, or shower. A GFCI outlet trips immediately if it detects an electrical imbalance (like water contact), preventing electrocution. However, many homeowners and even some electricians install a GFCI outlet at the sink and assume it's done; in reality, the GFCI must also protect all downstream outlets on that circuit. For example, if your vanity outlet is GFCI-protected, the exhaust fan outlet on the same 20-amp circuit downstream must also be protected — either by the GFCI outlet's 'load' terminals, or by a second GFCI, or by an AFCI/GFCI breaker at the panel.

De Pere inspectors will ask to see your electrical plan marked clearly with GFCI and AFCI protection symbols and locations. A common rejection is a plan that doesn't show GFCI at all, or shows it only at the vanity without protecting the whole bathroom. AFCI (Arc-Fault Circuit Interrupter) protection should be at the breaker for the entire bathroom circuit — this catches dangerous arc faults in wiring (like if a nail punctures a wire in the wall). If you're adding a new exhaust fan, it should be on the same AFCI-protected circuit as the lights and outlets, or on its own AFCI breaker. Confirm with the city inspector before rough-in whether you need both GFCI and AFCI on the same circuit (some setups use a dual GFCI/AFCI breaker); most modern codes allow a GFCI breaker at the panel to serve as both protections.

The De Pere Building Department's online permit portal or in-person submittal checklist will list electrical requirements. If you're hiring a licensed electrician, they'll know this cold; if you're DIY and planning to pull your own permit, draw out the bathroom layout with outlet locations marked as GFCI, show the circuit(s) in the panel, and write 'GFCI/AFCI required per NEC 210.8 and 210.12' on the plan. This clarity prevents rejections and shows the inspector you're serious about code compliance.

Common questions