Do I need a permit for a full bathroom remodel in
Burlingame, CA?

Burlingame full bathroom remodel permits — the key details

Burlingame Building Department oversees permit issuance, but the Planning Department's design-review process runs in parallel. This dual-track approach is unique to Burlingame's municipal structure and means you cannot pull a permit until Planning confirms the work doesn't violate design guidelines (materials, window placement, exterior visibility of ductwork, etc.). The city's adopted code is the 2022 California Building Code with local amendments. IRC P2706 governs drainage-fitting materials (no lead-based solder post-2014), and IRC M1505 requires exhaust fans to be vented directly outside, not into attics or unconditioned spaces — a common violation in older Bay Area homes. Burlingame's coastal location (sea-level to ~500 feet elevation within city limits) means no frost-depth requirements for bathroom work, but if your home is in a flood zone (Bay Mud areas near the bayshore), the city may require moisture barriers and raised-foundation specifications tied to FEMA flood elevation. The city does not require owner-builder licensing for bathroom remodels, but California law mandates that any electrical work (new circuits, GFCI installation, exhaust fan wiring) must be performed by a licensed electrician or supervised owner-builder with a C-10 license. Plumbing fixture relocation (drain, vent, supply lines) must also be done by a licensed plumber or licensed owner-builder (C-36). If you're doing the tile, painting, and fixture swaps yourself, that's allowed; the trades come in for plumbing and electrical.

Waterproofing for tub-to-shower conversions or new shower installations is a major code point. IRC R702.4.2 requires a continuous water-resistant membrane behind tile or other wall finish in wet areas. Burlingame inspectors expect to see either a tested cement-board + liquid membrane system (Schluter, Ditra, Kerdi, etc.) or a solid PVC/fiberglass pan. Simply using green drywall and caulk does not meet code. The inspector will ask for product cut sheets and installation photos during rough framing inspection. This is the #1 reason for rejections in Burlingame bathroom permits: applicants neglect to specify the waterproofing assembly on the permit drawings. Pressure-balanced valves are required by California Title 24 and IRC P2902.2; you must show the valve spec sheet on your plumbing plan. If your bathroom has an existing cast-iron drain line and you're relocating the toilet or second fixture (sink, bidet), the trap arm length cannot exceed 4 feet horizontal run, per IRC P3005.1 — Burlingame inspectors measure this carefully because Bay Area homes often have shallow crawlspaces that tempt long horizontal runs. Any new exhaust fan ductwork must terminate outside (not in a soffit or gable vent that recirculates into the attic), and the duct cannot be reduced below 4 inches in diameter, per IRC M1505.2.

GFCI protection is mandatory for all bathroom receptacles within 6 feet of the sink or tub, per NEC 210.8(A). This means either individual GFCI outlets or a GFCI breaker protecting the entire bathroom circuit. Many older Burlingame homes lack proper GFCI; the permit requires you to upgrade. If you're adding new circuits (e.g., a dedicated 20-amp circuit for heated towel racks, lighting, or exhaust fan), those must be shown on an electrical plan and stamped by a licensed electrician or the homeowner (if licensed). Burlingame's permit application requires a one-line electrical diagram showing breaker amperage, wire gauges, and GFCI/AFCI protection. Failure to show this is a quick rejection. AFCI (arc-fault circuit interrupter) is not explicitly required in bathrooms by code, but it is required in bedrooms and living areas; if your bathroom work involves rewiring circuits in adjacent spaces, AFCI becomes relevant. Ventilation fans rated for bathroom humidity (sones, CFM) must be sized to the room: the rule of thumb is 1 CFM per square foot of bathroom floor area, with a minimum 50 CFM. Burlingame doesn't have a local multiplier, so you can use the California Title 24 standard.

Lead-paint compliance is mandatory for homes built before 1978. If your Burlingame home was built pre-1978 (common in the downtown and Bay Road areas), the permit process requires you to provide a lead-hazard disclosure or hire a lead-certified contractor. Disturbing lead-painted surfaces (old tile, trim, cabinets) triggers containment and disposal protocols. This adds 1–2 weeks and $500–$1,500 to the project if you hire a certified abatement firm. You can self-perform if you take an EPA RRP (Renovation, Repair, and Painting) certification course, but most homeowners contract it out. Burlingame's Environmental Health Department (part of the city) coordinates with Building on lead compliance; they will request proof of certification or abatement records before Building issues the final sign-off. The city also enforces Proposition 65 notices on certain building materials, so your contractor must disclose if any products contain listed chemicals (typically relevant for adhesives, sealants, and finishes).

Timeline and cost: Burlingame building permits for full bathroom remodels typically range $400–$800 depending on valuation (the city calculates fees as ~1.5% of estimated project cost, with a minimum). Plan review takes 2–4 weeks if Planning design review is required; if no design-review items flag, 1–2 weeks. Inspections happen in this order: rough plumbing (drains, vents, supply), rough electrical (new circuits, GFCI rough-in), and framing/drywall if walls move. Final inspection includes fixture trim-out, waterproofing verification, and exhaust fan operation test. The entire permit-to-final timeline is typically 6–10 weeks. If you hire a general contractor, they usually absorb permit filing and coordination. As an owner-builder, you're responsible for getting inspections scheduled; Burlingame's online portal allows you to request inspections 24 hours in advance. The city's permit portal (accessible via the Burlingame city website) lets you upload plans, pay fees, and track inspection status in real time — this is a significant convenience compared to in-person filing and phone calls.

Three Burlingame bathroom remodel (full) scenarios

Waterproofing in Burlingame bathroom showers — why it matters and what inspectors check

Burlingame's coastal climate (high humidity, salt air, frequent fog) puts constant stress on bathroom moisture barriers. IRC R702.4.2 mandates a continuous water-resistant membrane behind all tile in wet areas (within 6 feet of a bathtub or shower). This is not optional, and Burlingame inspectors will not sign off on a final inspection without photographic proof. The membrane must be installed before tile — meaning the rough inspection must verify it's in place before drywall or cement board is finished. Many homeowners assume green drywall (moisture-resistant drywall) is enough; it is not. Green drywall is a substrate; the membrane goes over it (or under tile, depending on the system). The two approved systems in Burlingame are: (1) cement board (HardieBacker, Durock, etc.) + liquid waterproofing membrane (Schluter Kerdi, Mapei Mapelastic, Ardex Ardexcrete) + thinset + tile, or (2) integrated board systems (Schluter Kerdi board, which is XPS foam with integrated membrane). The integrated systems are more expensive (~$2–$3 per square foot installed vs. ~$1–$1.50 for cement board + liquid membrane) but faster and more foolproof. Your permit plan must specify which system you're using with product names and manufacturer documentation. Burlingame inspectors will ask for cut sheets and installation instructions. If you're using Kerdi, the inspector will verify that all seams are sealed with Kerdi tape and that corners are folded per Schluter's standards. A failed waterproofing inspection means tearing out tile and redoing the membrane — a $2,000–$5,000 mistake.

The coastal environment also affects material longevity. Standard plastic shower pans and fiberglass tub surrounds are prone to mold and degradation in Burlingame's damp air. The city encourages (though does not mandate) tile-over-membrane systems because they last 25+ years vs. 10–15 years for single-piece surrounds. If you're replacing a fiberglass surround with tile, you're upgrading durability and meeting code simultaneously. Pre-1978 homes in Burlingame often have asbestos-laden sealants and old tar-based waterproofing; if you disturb these materials, you must hire a licensed asbestos abatement contractor. This is a separate compliance item from lead paint but equally mandatory. Budget $1,000–$2,000 for asbestos abatement if your home is pre-1960 and the old surround is original. The permit application does not explicitly ask for asbestos testing, but Burlingame's Environmental Health Department can issue a stop-work order if unpermitted asbestos disturbance is discovered during inspection. Coordinate with your contractor on this upfront.

Drainage slope and substrate prep are equally critical. Shower floors must slope toward the drain at a minimum 1/4 inch per foot (per NEC P3005.3 analog in plumbing). If the slope is wrong, water pools in corners and breeds mold. Burlingame's plan review will not ask for slope dimensions (that's the contractor's detail), but the rough inspection will verify it visually. The substrate must be solid and flat; no soft spots, no compression, no voids. This is why cement board or rigid foam is required — standard drywall compresses under wet weight. If the inspector taps the substrate and hears a hollow sound, the inspection fails. Have your contractor use cement board rated for wet areas (Type X, 1/2-inch minimum) or an integrated foam board. The total assembly (substrate + membrane + thinset + tile) typically adds 1–2 inches to wall thickness; make sure your rough opening and fixtures (soap niches, grab bars) are planned accordingly. A common error is installing grab bars after tiling — they must go in before membrane, anchored to blocking in the studs.

Electrical code for Burlingame bathrooms — GFCI, circuits, and the heated-floor trap

Every bathroom receptacle in Burlingame must be GFCI-protected per NEC 210.8(A). This applies to outlets within 6 feet of the sink or tub, and also to any outlet serving a wet location (e.g., a receptacle in the vanity cabinet below the sink). You have two options: (1) individual GFCI outlets (roughly $50–$100 each), or (2) a GFCI breaker in the main panel protecting the entire bathroom circuit (roughly $100–$150). A GFCI breaker is usually cheaper and cleaner if the bathroom has more than one outlet on the same circuit. Burlingame inspectors will require your electrical plan to clearly show GFCI protection — either by labeling individual GFCI outlets or by noting the breaker type on the one-line diagram. A common rejection reason is failing to specify GFCI on the permit. If your bathroom has a hardwired exhaust fan (not a plug-in portable unit), the fan circuit does not require GFCI protection, but the wiring must still be correct (typically 20-amp, 14/2 or 12/2 wire, depending on length and breaker). New circuits for heated floors or towel racks require the same rigor. A heated floor mat is usually 240V, 20-amp, requiring its own dedicated circuit with a GFCI-protected disconnect (a GFI breaker, not an outlet). This is non-negotiable per NEC 422.31. Many homeowners (and DIY electricians) install heated floors on standard 120V circuits, which causes nuisance tripping or fire risk. Burlingame inspectors test this during rough electrical inspection; if the circuit is wrong, they will require correction before drywall closes it in.

Exhaust fan wiring is often neglected on permit plans but is mandatory to specify. A standard bathroom exhaust fan uses a 20-amp, 14-gauge wire (or 12-gauge if the run is over 50 feet) on its own circuit or shared with other bath exhaust fans (not with other loads like lighting or receptacles on the same breaker). The fan control can be a simple on-off switch or a humidity sensor (preferred in damp climates like Burlingame). If you're adding a humidity sensor, the permit should note it — some jurisdictions require continuous operation during showers, while others allow sensor control. Burlingame follows California Title 24, which allows sensor-controlled exhaust if the sensor activates when humidity exceeds 60% and runs for at least 20 minutes. A timer-controlled exhaust (15–30 min) is also acceptable. The permit electrical plan must show the exhaust fan circuit, wire size, breaker type, and control method. Do not assume the inspector will overlook this; it's a standard verification point during rough electrical inspection.

AFCI (arc-fault circuit interrupter) protection is not explicitly required in bathrooms by NEC, but it is required in bedrooms and living areas per NEC 210.12. If your bathroom remodel involves rewiring a bedroom or living room circuit that extends into the bathroom, AFCI becomes relevant to those spaces. Burlingame adheres to current NEC, so if your general contractor is upgrading the electrical panel or adding circuits, they must include AFCI on applicable circuits. The distinction between GFCI (ground-fault protection, for electrocution risk) and AFCI (arc-fault protection, for fire risk) is important: GFCI goes on bathroom wet locations; AFCI goes on bedroom/living room general-use circuits. A combined GFCI/AFCI breaker exists (~$150–$200) but is rarely needed in a bathroom-only remodel. Verify with your licensed electrician that the plan matches current code; Burlingame's building permit checklist includes an electrical review box that explicitly references NEC compliance.

Finally, rough and final electrical inspection timing matters. Rough electrical must happen before drywall is installed, so the inspector can verify wire routing, breaker amperage, GFCI placement, and any embedded conduit or low-voltage cabling (e.g., for heated floor sensors). Final electrical happens after fixtures are installed and the inspector tests GFCI outlets with a tester button, verifies exhaust fan operation, and checks that all circuits are energized and functioning. If you skip the rough inspection and drywall over the wiring, you cannot get a final sign-off. Burlingame's permit system allows you to request inspections online; schedule rough electrical for after rough plumbing is complete but before framing/drywall. This sequence prevents costly rework.

Common questions