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

Novato bathroom remodels — the key details

The threshold for a permit in Novato is any work that changes the bathroom's plumbing layout, electrical load, ventilation system, or structural framing. If you are moving a toilet, sink, or shower from one wall to another — or adding a new toilet — you need a plumbing permit. If you are adding a new 20-amp circuit for a heated floor or exhaust fan, or upgrading from a single outlet to a GFCI-protected outlet, you need an electrical permit. If you are removing a tub and installing a walk-in shower (or vice versa), the change in the waterproofing assembly (IRC R702.4.2) and the drainage-trap arm length trigger a plumbing permit. If you are cutting, moving, or removing any wall studs — even a partial wall around a new tub alcove — you need a structural review and permit. Novato Building Department treats all of these as distinct work streams, but they are often bundled into one 'bathroom remodel' permit application.

Waterproofing is the single most-cited deficiency in Novato bathroom remodels. California Title 24 Section 5.413 and IRC R702.4.2 require a continuous, impermeable waterproofing membrane behind any tub or shower enclosure. The code allows cement board + liquid-applied membrane, cement board + sheet membrane, or prefabricated waterproof backer board systems (like Wedi or Schluter). Your architectural or contractor plans MUST specify the brand and product name of the waterproofing system — not just 'waterproof backer' — or the plan reviewer will reject it and ask for a corrected set. Novato's inspectors will perform a rough inspection after the waterproofing is installed (before drywall or tile) to verify continuity at corners, behind the valve, and around the drain — if the membrane is punctured or gaps are visible, you will fail and have to tear it down and reinstall. This step alone adds 1–2 weeks to the timeline because many contractors do not expect it.

Exhaust ventilation and GFCI outlets are the other major trip-wires. Title 24 Section 5.503 and IRC M1505 require a bathroom exhaust fan ducted to the outside (not into an attic or wall cavity) with a minimum 4-inch duct, a damper, and termination at least 10 feet from windows or doors. If you are installing a new duct, your electrical plan must show the route, duct diameter, damper location, and termination point. Novato's rough electrical inspection will verify the duct exists and is properly sealed and insulated. At the same time, NEC Article 210.8 and California Title 24 require all outlets within 6 feet of a sink to be GFCI-protected (or arc-fault protected if they serve lighting). Your electrical plan must clearly mark which outlets are GFCI or AFCI, and show them on a single-line diagram — Novato inspectors do not approve plans that list outlets without a diagram. Failing to detail these items on your plan submission will trigger a 'Request for Information' (RFI) and add 1–2 weeks to the timeline.

Plumbing fixture relocation has specific trap-arm length limits. IRC P2706 and the California Plumbing Code limit the distance from a trap weir (the outlet of a sink or toilet trap) to the vent to 6 feet for a 1.5-inch trap and 10 feet for a 2-inch trap. If you are moving a toilet or sink across the bathroom and the new location would exceed this distance, you may need to add a new vent or move the vent line — both add cost and complexity. Novato Building Department requires a plumbing plan that clearly shows trap locations, vent locations, and measurements. If your plan does not include these details, it will be returned. Additionally, any new shower or tub drain must include a trap and a vent; Novato inspectors will verify the trap is accessible and the vent is not S-trapped (which is prohibited by code) at the rough-plumbing inspection.

Lead-paint containment adds time and cost for homes built before 1978. California Health & Safety Code Section 105680 and EPA RRP Rule require all bathroom remodels that disturb more than 20 square feet of lead-based paint (common in older homes) to use a licensed lead-abatement contractor or a trained renovation contractor. This is separate from your building permit but is often enforced during plan review — Novato Building Department will flag it if your home pre-dates 1978 and you don't have a lead-work plan. Hiring a licensed lead contractor adds $1,000–$3,000 to your budget and 1–2 weeks to your schedule. If you attempt to do the work yourself and fail to follow RRP containment rules, EPA fines start at $16,000 per violation.

Three Novato bathroom remodel (full) scenarios

Novato's online permit portal and in-person plan review — why you still need to walk in the door

Novato Building Department operates an ePermits online portal for initial application submission, which is faster than hand-delivering a paper set in many Bay Area cities. You can upload your plans, photos, and a project description 24/7, and the department will assign an intake specialist to review completeness. However, unlike San Francisco or Oakland, Novato requires in-person meetings for most bathroom remodels — especially those involving plumbing or structural changes. Plan reviewers at City Hall (3rd Avenue, downtown Novato) expect a face-to-face walk-in appointment after the RFI (Request for Information) is issued; this is because waterproofing details, vent locations, and electrical diagrams often require real-time discussion and sketching. Expect 2–4 weeks from initial submission to approved plans, not the advertised 5–7 business days (which applies only to simple projects like interior re-staining).

When you submit via ePermits, upload a complete set of plans: site plan (showing the home), floor plan with measurements and fixture locations, plumbing schematic (showing drains, vents, traps, and waterproofing), electrical single-line diagram (showing circuits, GFCI outlets, and new loads), and cross-sections of any waterproofing or structural changes. If any element is missing, the intake specialist will issue an RFI requesting it — and you cannot move forward until you resubmit. Novato's Building Department does not expedite reviews for small projects; all bathroom remodels follow the same 2–4 week track. If you are on a timeline (e.g., contractor already hired, work starting in 2 weeks), plan accordingly — delays due to missing RFI details are common and frustrating.

In-person meetings are scheduled during office hours (Monday–Friday, 8 AM–5 PM). Bring your plans in a tube or folder, your contractor's license (if you have hired one), and any product spec sheets for waterproofing systems or fixtures. The plan reviewer will mark up your plans by hand, showing what needs to be revised, and ask you to resubmit the corrected set within 3–5 business days. Once approved, you can pick up your permit and begin work — but you cannot start rough inspections until the permit is in hand.

Waterproofing and Title 24 Section 5.413 — the most common reason for plan rejection

California Title 24 Section 5.413 requires all shower and tub surrounds to be constructed with a continuous, impermeable waterproofing membrane installed per manufacturer instructions. The code does not allow drywall + caulk or tile + grout alone — you must have a certified waterproofing system. Approved systems include: cement board + 40-mil or thicker sheet membrane (like Kerdi, Hydroban, or Aquadefense), cement board + liquid-applied membrane (like RedGard or Hydroban liquid), or prefabricated waterproof backer boards (like Wedi, Schluter Kerdi Board, or Laticrete Hydro Barrier). Novato plan reviewers will reject any submission that lists 'waterproof drywall' or 'backer board' without specifying the product — they need the brand and product name to verify it meets Title 24.

When your contractor or architect prepares the plan, have them call out the waterproofing system on a detail drawing with cross-sections showing drywall, cement board or backer board, membrane, tile, and grout. Show how the membrane is sealed at corners (inside corners must have a 6-inch + overlap or sealed corner tape), around the drain (the drain flange must be installed over the membrane), around the valve rough-in (the membrane must be cut, not punctured), and at the top of the shower enclosure (the membrane must lap onto the framing at least 6 inches above the tub rim or shower threshold). If you skip these details on the plan, Novato's plan reviewer will issue an RFI, and you will have to resubmit — adding 1–2 weeks. Once approved, the rough inspection will require you to expose the waterproofing after installation so the inspector can verify it was done per the plan and per Title 24.

The waterproofing rough inspection is fail-prone because contractors often assume tile setting and grouting = waterproofing is fine. Any visible gaps, punctures, or areas where the membrane is not adhered will cause a failure. Novato inspectors will take photos of failures and require you to fix it and resubmit for re-inspection — this can add 1–2 weeks if the fix requires removing tile. The best practice is to hire a waterproofing specialist or a contractor with proven experience, and to have the specialist (or the GC) present at the rough inspection to explain the system to the inspector.

Common questions