Do I need a permit for a full bathroom remodel in
Sherman, Texas?

Sherman bathroom remodel permits — the key details

Any plumbing fixture relocation—moving a toilet from one wall to another, relocating the sink, shifting the tub—requires a plumbing permit and a separate permit application filed with the City of Sherman Building Department. The code (IRC P2706, adopted by Texas) sets strict limits on drain-trap arm length (maximum 6 feet from trap weir to vent stack entry) and requires every fixture to have a P-trap with a cleanout accessible for maintenance. If you're moving a toilet and the new drain line would exceed 6 feet from trap to vent, you'll need a secondary vent line (wet vent or individual vent), which adds cost and complexity. Sherman inspectors are particular about this measurement—they'll bring a tape and verify it during rough plumbing inspection. If the new location requires running drain lines under a joist or through the subfloor, the inspector also wants to see proper slope (1/4 inch per foot minimum) and clearance from any structural members. Many homeowners skip the permit thinking a simple toilet relocation is 'just plumbing,' but Sherman's building department will cite you if a plumber installs an unpermitted drain line, and you'll be forced to tear out drywall and re-inspect.

Electrical work in a bathroom—adding a new circuit for a heated floor mat, installing a new exhaust fan with a dedicated 20-amp circuit, or rewiring existing outlets—always requires an electrical permit and inspection. The National Electrical Code (NEC 210.8), adopted by Texas and enforced by Sherman, mandates that all bathroom outlet circuits be protected by ground-fault circuit interrupter (GFCI) devices. This means either a GFCI breaker in the main panel or GFCI outlets throughout the bathroom. If you're adding a new circuit, the electrician must show a load calculation and panel capacity on the electrical permit plan, and the inspector will verify at rough electrical that the breaker is properly sized (typically 20 amps for bathroom outlets, 15 amps if only a single outlet) and the circuit serves only bathroom outlets—no outlets in hallways or adjacent rooms. Additionally, if your bathroom is on the same floor as a bedroom, NEC 210.8(C) requires arc-fault circuit interrupter (AFCI) protection for all bedroom circuits; if your electrical work touches the panel or any bedroom circuit, the inspector will flag it. Sherman's electrical inspector also checks that all outlets are at least 12 inches from a bathtub or shower edge (IRC E3902.1) and that any wall sconces over a sink are installed in a moisture-resistant outlet box. Many contractors miss the AFCI requirement and get a correction notice at final inspection.

A new exhaust fan or ventilation system—replacing a bathroom fan or installing one in a previously non-vented bathroom—requires both a plumbing (mechanical) permit and verification that the duct termination is to the exterior, not into an attic or soffit. IRC M1505 (adopted by Texas) requires bathroom exhaust fans to be rated for continuous operation at 50 CFM (cubic feet per minute) minimum, with a damper or backdraft preventer and a duct that runs to the exterior (not into the attic or to a soffit vent—common mistakes in older homes). Sherman inspectors will verify the duct diameter (typically 4 inches minimum), that it has no more than three 90-degree bends, and that the termination hood is on the gable end or roof with a minimum 12-inch clearance from any soffit or window. If the duct is longer than 25 feet, the fan CFM must be increased (typically 75 CFM). If you're running the duct through an attic or unconditioned space in Sherman's climate (especially in the panhandle where frost depth is 24+ inches), the duct should be insulated to prevent condensation and freeze-back. The inspector will request the fan's CFM rating and duct run length on the permit plan, and at rough inspection, they'll verify the duct is properly sealed (no flex duct stapled to joists or kinking) and the damper operates freely.

Tub-to-shower conversions and shower waterproofing assemblies are a major focus for Sherman inspectors because water intrusion is the leading cause of hidden damage in remodeled bathrooms. IRC R702.4.2 (adopted by Texas) requires that any shower or tub enclosure have a waterproofing membrane (cement board + liquid waterproofing, vinyl shower pan liner, or prefabricated shower pan system) beneath all exposed surfaces within the tub/shower surround. The permit plan must specify which waterproofing system you're using—the city won't accept vague language like 'waterproof the shower.' If you're converting a tub to a shower, the inspector will want to see the shower pan detail, the height of the waterproofing membrane (IRC R702.4.2.1 requires it to extend 6 inches above the flood rim of the tub or shower valve), and the drain installation. Many contractors use cement board (which is not a waterproofing membrane—it's just a substrate) and assume it's waterproof; Sherman inspectors will correct this and require a liquid or sheet membrane over the cement board. Additionally, any tub or shower valve must be pressure-balanced (ASSE 1016) or thermostatic (ASSE 1017) to prevent scalding—this is a state and federal requirement, but Sherman will cite it on the permit. If you're moving a tub or shower fixture, you must also verify that the rough-in plumbing (the drain and hot/cold supply lines) are correctly sized and located before drywall goes up; the inspector will check rough plumbing before you close any walls.

The permit process in Sherman typically begins at City Hall (701 N. Travis Avenue) where you submit the building permit application along with plumbing, electrical, and mechanical permits as needed. Fees for a full bathroom remodel are usually $300–$800 depending on the estimated valuation of the work (typically calculated at $50–$100 per square foot of the bathroom); the city charges a base permit fee plus a small percentage of valuation. Plan review takes 2-5 weeks in most cases, and the city may request revisions (especially on waterproofing details, electrical GFCI/AFCI layout, and drain routing). Once approved, you can begin work, but all rough plumbing and electrical must be inspected before drywall, and no fixtures can be installed until final inspection. If you're an owner-builder on an owner-occupied home, you can pull the permits yourself; if you hire licensed contractors (plumber, electrician), they can often expedite the process because the city recognizes their license number. However, you must be present at all inspections and sign off on the final permit. Lead-based paint (pre-1978 homes) requires an RRP (Renovation, Repair, and Painting) notice and safe work practices if you're disturbing paint during demolition—the city doesn't enforce this directly, but the EPA can fine you $15,000–$37,500 if you fail to comply, so it's a serious issue. Total timeline from permit application to final sign-off is typically 6-8 weeks if there are no major rejections.

Three Sherman bathroom remodel (full) scenarios

Waterproofing assemblies and shower construction in Sherman: why inspectors scrutinize this so carefully

Sherman's climate (2A-3A zone with hot, humid summers and occasional freeze-thaw cycles in winter, plus the area's expansive clay soils that shift seasonally) creates an ideal environment for water intrusion damage if shower waterproofing is done incorrectly. The IRC R702.4.2 standard (adopted by Texas) requires a waterproofing membrane—not just cement board, which is merely a substrate and not waterproof—behind all exposed surfaces within the tub or shower surround. In practice, this means cement board + a liquid waterproofing membrane (like RedGard, Hydro Ban, or similar), or a prefabricated shower pan system (vinyl liner or composite base). Many DIY and contractor-installed bathrooms in older Sherman homes fail because they use cement board alone, assuming it's waterproof (it's not), or they apply a membrane but miss critical details like the height (6 inches above the flood rim of the tub) or the drain pan slope (1/4 inch per foot toward the drain).

Sherman inspectors will ask for three things on the permit plan or during rough inspection: (1) the specific waterproofing product name and manufacturer (not just 'waterproof membrane'); (2) the membrane height and extent (showing it goes up 6 inches above the tub rim and covers all surfaces that could be exposed to water); and (3) the drain installation detail (showing that the drain is properly sloped and sealed to the membrane with no gaps). If you're converting an existing tub to a shower, this typically means tearing out the old surround and re-waterproofing from scratch—applying a membrane over existing tile is not acceptable under code. The city won't issue a final permit sign-off until the waterproofing is inspected in place (before drywall), so if you or your contractor skip this step or do it incorrectly, you'll get a correction notice and have to tear out drywall to fix it.

Expansive clay soils in Sherman (Houston Black clay is common in Grayson County) can shift seasonally, which puts stress on the waterproofing assembly. If the subfloor or framing moves, the waterproofing membrane can crack or pull away from the walls, allowing water to seep into the substructure. To mitigate this, some engineers recommend over-sloping the shower pan (slightly more than 1/4 inch per foot) and using a flexible, liquid-applied membrane rather than rigid materials. Sherman inspectors don't mandate this, but they're aware of the risk, and if you have a history of water intrusion or mold in previous bathroom work, the inspector may request additional detail to ensure the waterproofing is robust.

Owner-builder permits in Sherman: what you can do yourself versus what requires a licensed contractor

Texas Property Code § 37.001 allows owner-builders to pull permits for owner-occupied single-family dwellings without a license, but Sherman enforces this carefully, and not all work qualifies. You (the owner) can pull a building permit, plumbing permit, electrical permit, and mechanical permit for your own home if it's owner-occupied and a single-family dwelling (not a rental, duplex, or commercial property). However, the work itself must still meet all code requirements and pass all inspections; pulling a permit as an owner-builder doesn't exempt you from code compliance. Additionally, once you hire a licensed contractor (plumber, electrician), that contractor must have a valid Texas license, and the license number must be listed on the permit application. In Sherman, if you're acting as the general contractor and coordinating the work yourself (not hiring a GC), you're responsible for scheduling all inspections and ensuring the work is done correctly.

The permit office in Sherman will ask you to certify that you're the owner-occupant when you apply; they may request proof of ownership (deed or property tax statement). If you later sell the home, the new owner inherits the permitted work—no issue there. However, if you're working on a rental property or you're a contractor (even if you're doing it 'under the table' on your own investments), you must have a license or hire a licensed GC, and the building department will require this on the permit. Violation of this rule can result in unpermitted work citations and fines of $250–$500 per day.

For electrical work specifically, Texas allows owner-builders to do low-risk work (replacing outlets, light fixtures, switches in existing locations) without a license, but new circuit installation—like adding a heated floor or new exhaust fan circuit—may require a licensed electrician depending on Sherman's local interpretation. Call the building department to ask if your specific electrical scope allows owner-builder wiring or if you must hire a licensed electrician. The same applies to plumbing: replacing a faucet or toilet in place is generally owner-builder–friendly, but relocating drains or adding new supply lines typically requires a licensed plumber, especially if it involves cutting into existing infrastructure.

Common questions