A complete bathroom remodel in the Bay Area includes: demolition and disposal of existing tile/fixtures; waterproofing membrane installation; new plumbing rough-in (if moving fixtures) or supply/drain connection (if keeping layout); electrical updates for GFCI outlets, exhaust fan, and lighting per NEC code; cement board substrate; tile installation on floor and walls; vanity, sink, faucet installation; toilet installation; shower/tub installation (walk-in shower, tub, or combo); mirrors and accessories; paint and finishing. Everything is inspected and permitted through your city’s building department.
What’s Included by Bathroom Remodel Type
Helpful Resources:
| Scope | Typical Cost (Bay Area) | What’s Included |
|---|---|---|
| Powder Room (half bath) | $5,000–$15,000 | Vanity, toilet, tile floor, paint, light fixture, faucet |
| Cosmetic Refresh | $8,000–$20,000 | No demo, new fixtures only: vanity, toilet, faucet, shower door, accessories |
| Mid-Range Full Bath | $25,000–$55,000 | Full demo, new tile floor + walls, tub/shower, vanity, toilet, exhaust fan, lighting |
| Walk-In Shower Conversion | $15,000–$35,000 | Remove tub, frameless glass enclosure, niche, tile, bench seat |
| Master Bath Luxury | $55,000–$120,000 | All above + heated floors, freestanding tub, dual vanity, smart lighting, steam shower |
The Bathroom Remodel Process Step by Step
What order do things happen in a bathroom remodel? The sequence for a full bathroom remodel: (1) Permit application (2–8 weeks in Bay Area); (2) Demo — remove old tile, fixtures, drywall; (3) Rough plumbing — move or reconnect drains and supply lines; (4) Rough electrical — GFCI outlets, exhaust fan wiring, lighting; (5) Inspections — city inspector approves rough work before covering walls; (6) Waterproofing — critical step, especially for shower areas; (7) Cement board or tile backer installation; (8) Tile installation, floor first then walls; (9) Vanity, toilet, fixtures; (10) Glass shower enclosure; (11) Accessories, mirrors, lighting; (12) Paint; (13) Final inspection and punch list.
What Is Waterproofing and Why Does It Matter?
Waterproofing is the most critical and most often skipped step in bathroom remodels. A proper shower waterproofing system — either a schluter KERDI membrane, liquid-applied RedGard membrane, or pre-sloped shower pan — prevents water from migrating behind tile and into the subfloor and walls. Bathroom water damage from failed waterproofing is the #1 cause of mold, structural damage, and failed bathroom remodels in the Bay Area. Quartz Construction uses Schluter KERDI system or Laticrete Hydro Ban on all shower installations, with waterproof inspection before tiling begins.
Does a Bathroom Remodel Require a Permit in Bay Area?
Do I need a permit for a bathroom remodel in the Bay Area? Yes, if you are: moving plumbing fixtures (toilet, shower drain, sink drain); adding or moving electrical outlets, exhaust fan, or lighting; changing the shower pan or tub; making structural changes. No permit required for: replacing a toilet in the same location; swapping a vanity with same-size in same location; replacing tile over existing waterproofed substrate; replacing faucets. When in doubt, always pull a permit — unpermitted bathroom work must be disclosed when selling and can result in the new owner requiring it to be torn out and redone.
Quartz Construction handles all bathroom remodel permits, inspections, and waterproofing for Bay Area homeowners. Call (408) 555-1234 or get a free bathroom estimate. We serve San Jose, Fremont, Oakland, Santa Clara, Sunnyvale, Palo Alto, and all Bay Area cities. CSLB #1003436 | $2M liability insurance.
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What Our Bay Area Clients Say
4.9 ★ average rating across Google, Yelp, and Houzz from 150+ Bay Area homeowners.
"Quartz Construction did an amazing job on our kitchen remodel. The team was professional, on time, and the results exceeded our expectations. Highly recommend to any Bay Area homeowner!"
— Michael T. |
"We hired them for a bathroom remodel in our San Jose home. From permitting to final walkthrough, everything was handled perfectly. The tile work is stunning. 5 stars without hesitation."
— Sarah L. |
"Just finished our ADU garage conversion. The project came in on budget and on schedule — rare in the Bay Area! The rental income already started. Could not be happier with Quartz Construction."
— David R. |
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Quartz Construction & Remodeling | CSLB #1003436 | Licensed, Bonded & Insured
Phone: (650) 749-7436
Address: 1777 Hamilton Ave #1080, San Jose, CA 95125
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Service Area: San Jose, Santa Clara, Sunnyvale, Mountain View, Los Gatos & Bay Area
