How to plan a bathroom remodel in the Bay Area, step by step
Step 1 — Should you refresh or fully remodel the bathroom?
A refresh keeps everything where it is: new vanity, fixtures, mirror, lighting and paint, maybe new tile over sound surfaces. A full remodel takes the room down to the studs so plumbing, wiring, ventilation and waterproofing can be rebuilt. Older Bay Area homes often benefit from the full version because you finally see — and fix — what's behind the walls.
Step 2 — Should you keep the existing layout?
Keeping the toilet, shower and sink where they are is the simplest way to control cost and schedule. Moving them, converting a tub to a walk-in shower with new drains (see our tub-to-shower conversion guide), or adding a fan with new ducting are plumbing, electrical or mechanical changes. The City of San Jose says that kind of work needs a building permit.
Step 3 — How should the shower be waterproofed?
The part you never see matters most. Tile and grout are not waterproof on their own; the membrane behind them is. Ask how the shower pan, walls and niches will be waterproofed and whether it's tested before tile goes on.
Step 4 — Which materials should you choose before demolition?
- Tile for floor, walls and shower (order extra for cuts and future repairs).
- Vanity, countertop and sink.
- Faucets, shower valve and trim — the valve goes in the wall early, so it must be chosen first.
- Toilet, mirror, lighting and exhaust fan.
Having everything on site before work starts is the single best way to avoid delays.
Step 5 — Do you need a permit for a bathroom remodel?
According to the City of San Jose, cosmetic swaps usually don't need a permit, while plumbing, electrical, ventilation and structural work does. Other cities set their own rules, so check with your local building department. Inspections happen while walls are open, which protects you. Details: permit rules in San Jose.
Step 6 — How do you hire a licensed, insured contractor?
In California, the Contractors State License Board (CSLB) says any job of $1,000 or more in labor and materials needs a licensed contractor. Verify the license, ask for proof of liability insurance, and get a written scope. See how to check a contractor's license.
Step 7 — How do you live through the project?
If it's your only bathroom, plan where you'll shower during the work. Agree on how the site is protected and cleaned each day, and how changes are approved and priced. Our guide to living through a remodel has more ideas, and you can see finished bathrooms in our project gallery.
Bathroom remodel checklist
- Refresh or full remodel decided
- Layout fixed (and permit needs known)
- Waterproofing method agreed
- All materials chosen and ordered
- Contractor license and insurance verified
- Written estimate and schedule signed
Frequently asked questions
Do I need a permit to remodel a bathroom?
If you move or add plumbing, add electrical circuits, change ventilation or alter walls, yes. A cosmetic refresh with no utility changes usually does not need one in San Jose.
What is the most important part of a shower remodel?
Waterproofing. Tile and grout are not waterproof by themselves; a proper membrane behind the tile, tested before tiling, is what keeps water out of the walls and floor.
How can I keep a bathroom remodel on budget?
Keep the existing layout, choose all materials before demolition, and get a written itemized estimate from a licensed contractor.
Should I choose fixtures before work starts?
Yes. The shower valve is installed inside the wall early in the project, so the trim and valve need to be picked before rough plumbing.
Planning a remodel in the Bay Area?
ProRock Remodeling is a licensed general contractor (CSLB #1154078) working from San Jose to South San Francisco, with $1M liability coverage and a 2-year workmanship warranty. Call (408) 991-4744 or request a free estimate.