The short answer
What does San Francisco require before a bathroom remodel starts?
In San Francisco, a bathroom remodel starts with the permit, not the tile. DBI requires a permit to renovate and replace bath fixtures, and new bathroom flooring is not on its exempt list. Same-layout work in a qualifying building can be filed online; moving fixtures needs plans and over-the-counter review. Every toilet, showerhead and faucet in the project area must meet the City's limits of 1.28 gallons per flush and 1.8 gallons per minute.
Pick the toilet before the tile. Every fixture in the project area has to meet the City's water limits anyway, and SFPUC pays up to $100 back on a qualifying 1.1-gallon toilet and up to $200 on a 0.8-gallon one.
Discuss your scope with a Renology advisor and check suitable contractor options. Free for homeowners, with no obligation.
Finish refresh: inclusions & limits
Covers vanity, toilet, faucet, showerhead, mirror, lights and paint. San Francisco requires fixtures in the project area to meet 1.28 gallons per flush for toilets and 1.8 gallons per minute for showerheads and faucets, so a toilet above that limit gets replaced. New bathroom flooring is not on DBI's permit-exempt list. Sunset District tract houses were often built with colorful ceramic bathroom tile, which a refresh can keep.
Rebuild the wet area: inclusions & limits
Includes demolition, backer, waterproofing, valve, drain connection, tile and glass. DBI's green building form for residential alterations lists a bathroom exhaust fan that is ENERGY STAR compliant, ducted to the exterior, with an adjustable humidistat. The 2025 Energy Code calls for an automatic shutoff control on at least one bathroom light. The City treats every repair and renovation job as lead work.
Change the layout: inclusions & limits
DBI lists a bathroom remodel that changes the layout or removes walls as needing plans, and puts new bathrooms on the over-the-counter route. A unit in an apartment or condo building (R-2 in the building code) built after 1991 also goes over the counter, even without layout changes. Price drain relocation, any joist work, the engineer and a new exhaust route as separate lines. Association approval never replaces the DBI permit.
What a bathroom remodel costs in San Francisco in 2026.
A San Francisco bathroom is often the smallest room in the house, and the bids for it can still land far apart. The City's own records show where most owners start: on 1,911 bathroom permits filed for single-family homes and duplexes since September 2024, owners declared a median of $27,000, and half of them landed between $15,000 and $50,000.
$27,000
Set that against the 2025 Cost vs Value report, which prices a midrange bathroom remodel here at $32,160 and an upscale one at $97,394. The Census Bureau's housing survey lands lower, at a $10,000 median for bathroom projects across the San Francisco-Oakland-Hayward metro, because it counts every small repair and DIY job. None of these numbers is wrong. A permit records the construction value declared to DBI to set fees, a model price describes one defined project, and a bid for your room also carries waterproofing, a ducted fan, access through the unit below and whatever the old tile is hiding.
All the numbers and where they come from
| Figure | Value | What it measures |
|---|---|---|
| Median permit value | $27,000 | Declared construction value on 1,911 bathroom permits for single-family homes and duplexes, filed September 2024 to September 2026. Half fall between $15,000 and $50,000. (San Francisco DBI building permits, open data) |
| Top tenth of permits | $100,000+ | One in ten of those permits declared $100,000 or more. (San Francisco DBI building permits, open data) |
| Midrange bathroom remodel | $32,160 | Cost vs Value 2025 model price for a midrange bathroom remodel. (JLC, 2025 Cost vs Value, San Francisco) |
| Universal design bathroom | $52,228 | Cost vs Value 2025 model price for a universal design bathroom remodel. (JLC, 2025 Cost vs Value, San Francisco) |
| Upscale bathroom remodel | $97,394 | Cost vs Value 2025 model price for an upscale bathroom remodel. (JLC, 2025 Cost vs Value, San Francisco) |
| What households spent | $10,000 | Median spent on bathroom projects in the San Francisco-Oakland-Hayward metro in 2023, small updates and DIY work included (margin of error $2,972). (U.S. Census Bureau, American Housing Survey 2023, Table 16) |
| Plumber wage | $37.44 an hour | Median plumber wage in the San Francisco-Oakland metro, May 2025. Tile setters earned a median $30.98. Contractors bill above wages. (U.S. Bureau of Labor Statistics, May 2025 wages, San Francisco-Oakland) |
| Toilet rebate | Up to $200 | SFPUC pays up to $100 per qualifying toilet at 1.1 gallons per flush and up to $200 per toilet at 0.8 gallons per flush. (SFPUC, Ultra-High Efficiency Toilet Rebate Program) |
Median declared bathroom value by neighborhood
- Sunset and Parkside$30,000 median, 273 permits
- Outer Richmond$30,000 median, 104 permits
- Excelsior$30,000 median, 77 permits
- Castro and Upper Market$29,500 median, 88 permits
- West of Twin Peaks$28,875 median, 254 permits
- Noe Valley$26,250 median, 126 permits
- Bernal Heights$25,000 median, 116 permits
- Inner Sunset$25,000 median, 106 permits
| Budget line | Define it | Watch for |
|---|---|---|
| Wet area | Demolition, backer, waterproofing, valve, drain, tile and glass. JLC's 2025 Cost vs Value put a midrange San Francisco bath at $32,160 and an upscale one at $97,394. | Ask each bidder to name the waterproofing product, valve and drain as separate lines, and to say whether a flood test of the shower pan is in the price. |
| Code-driven items | A ducted ENERGY STAR fan with humidistat, compliant toilet, showerhead and faucets, and lighting controls under the 2025 Energy Code for permits filed from January 2026. | These are requirements, not upgrades to trim when a number runs high. A bid that leaves them out will return as a change order at inspection. |
| Access and logistics | Stair carry, protection of shared halls, building water shutoffs and debris hauling. A typical Sunset house was built with a single bathroom, so count the cost of living without it. | A debris box on the street needs a Public Works street space permit and No Parking signs posted 72 hours ahead. Confirm who handles both before the start date. |
For inclusions, allowances and exclusions, see how to read a contractor quote line by line. For broader benchmarks, see the Renology Cost Index.
What a bathroom remodel budget buys in San Francisco.
About $15,000
A quarter of San Francisco bathroom permits declare $15,000 or less. That buys a finish refresh: vanity, toilet, faucet, showerhead, lights and paint, with the tub or shower left in place. Every fixture in the project area must meet the City's water limits, and SFPUC pays up to $100 back on a qualifying 1.1-gallon toilet.
$25,000 to $45,000
The median permit is $27,000, and the Cost vs Value midrange bathroom costs $32,160. That takes the tub or shower to the framing and rebuilds waterproofing, valve, drain, tile and glass. It also covers the ducted ENERGY STAR fan with a humidistat that DBI's green building form lists.
$50,000 to $90,000
The top quarter of permits starts at $50,000. Layout changes live here: a moved toilet, a tub turned into a walk-in shower or a new bathroom, all of which need plans and over-the-counter review. Cost vs Value prices a universal design bathroom, built to work for people of any age or ability, at $52,228.
$95,000 and up
The Cost vs Value upscale bathroom costs $97,394, and one permit in ten declares $100,000 or more. The money goes into tile, glass and fixtures, and into any joist or drain work under the floor.
What a San Francisco bathroom bid includes that a permit value leaves out.
Old bathrooms hide their problems in the floor and in the ceiling below. A permit value is the number an owner or contractor gives DBI at filing, before anyone has opened the shower wall. A bid has to price what comes out of that wall, such as rotten subfloor or an old drain line, plus the contractor's overhead and profit.
What each bid includes is the other half. One carries the plumbing and electrical permits that PermitSF links to the bath permit, and a Public Works street space permit for the debris box. It also plans access to the drain from the unit or garage below, and lead-safe work, which the City expects on every repair and renovation job. Another leaves those for change orders. The trades are well paid here. In May 2025 the median plumber in the San Francisco-Oakland metro earned $37.44 an hour and the median tile setter $30.98, and a contractor's rate covers more than the wage.
Bring the bid checklist to every contractor so the numbers describe the same job.
Make the guide yours
Fixture swap, shower rebuild or tub-to-shower conversion?
A San Francisco bathroom is often the smallest room in the house, and the scope decides how much paperwork it carries. Even a fixture swap has to meet the City's water limits. A rebuilt shower adds waterproofing and a ducted fan. Moving a toilet or turning a tub into a walk-in shower needs plans and over-the-counter review, and sometimes access from the unit below.
No scope selected. The guide and checklist are available without choosing a project tier or leaving contact details.
The hidden scope in a compact bathroom
A typical Sunset District house was built with a single bathroom, so remodeling it means weeks without one. Settle where the household will shower, and whether the crew can reconnect the toilet early, before you choose a start date.
SF.gov lists $20,552 per bathroom as the minimum valuation for the online bath permit. The figure comes from DBI's 2022 cost schedule, which sets permit fees and says its values are not an accurate guide to construction cost. Filings still run lower: a quarter of the 1,911 bathroom permits since September 2024 declared $15,000 or less. Ask each bidder what value they will file.
Official starting point: San Francisco kitchen and bathroom permit guidance.
A decision to work through · illustrative scenario
Turning a tub into a walk-in shower upstairs
The bathroom is on the second floor of a flat, and its drain runs through the ceiling of the unit below. If the new shower drain moves, the job becomes a layout change with plans and over-the-counter review, and the new drain line may cross a joist.
Before you compare bids: Ask for a section drawing through the new shower floor, the drain route with any joist it crosses, and a written plan for reaching the ceiling below.
How a San Francisco bathroom moves from permit to final inspection
Paperwork and construction run on one track here. DBI wants the job card in hand before demolition, the plumbing and electrical permits move alongside the bath permit, and the final inspection waits until both trades have passed their own. The City also asks for water efficiency compliance to be documented at the time of the remodel, so fixture choices belong at the start of the job, not the end.
- 1
Scope and route: decide whether any fixture moves. If none does and the building qualifies, a contractor with a California B license can file online in PermitSF. A new bathroom or a layout change needs plans and an in-person over-the-counter review at the Permit Center.
- 2
Permit and procure: pay remaining fees and collect the job card before demolition, then order the valve, fan and fixtures that meet the City's flow limits. File the linked plumbing and electrical permits in PermitSF so they move with the bath permit.
- 3
Build and close: request inspections through PermitSF as work progresses. DBI will not schedule the bath permit's final until the plumbing and electrical finals pass, and the City requires water efficiency compliance to be documented at the time of the remodel.
Ask for separate dates for design, permit review, ordering and construction.
Five things every San Francisco bathroom bid should show
Two bids for the same small room can describe two different bathrooms. One names the fan, the duct exit and the waterproofing; the other says shower rebuild and stops there. In a San Francisco flat, where a drain may run through another unit and the building may control the water shutoff, the five items below are what make the numbers comparable.
- Occupancy class and year built from the Property Information Map, to confirm the online or over-the-counter permit route
- Fixture schedule showing toilets at 1.28 gallons per flush or less, and showerheads and faucets at 1.8 gallons per minute
- Exhaust fan model, humidistat and duct exit point shown on the drawing
- Written plan for building water shutoffs and access to the ceiling or garage below
- Named owner for the plumbing and electrical permits, and the order of final inspections
If you ask for help, a Renology advisor talks through your scope and checks local contractor availability. You decide whether to go ahead.
Already have a proposal? Check its scope and exclusions with the quote-review tool before your next contractor conversation.
Owner permits, unpermitted baths and other San Francisco questions
Some of the most useful answers here are the least obvious. Only owners of a stand-alone single-family home they live in can pull their own bathroom permit, and a bathroom added without a permit cannot use the online route.
Which bathroom fixtures does San Francisco require?
Every toilet in the project area must use 1.28 gallons per flush or less, and every showerhead and faucet 1.8 gallons per minute or less. The City wants that documented at the time of the remodel. DBI's green building form for alterations also lists an ENERGY STAR exhaust fan, ducted outside and controlled by a humidistat.
How much does it cost to renovate a bathroom in San Francisco?
On 1,911 San Francisco bathroom permits for single-family homes and duplexes since September 2024, owners declared a median construction value of $27,000, with half between $15,000 and $50,000. That is the value declared to DBI to set fees, not a final invoice. A budget of $25,000 to $45,000 covers taking the tub or shower to the framing and rebuilding waterproofing, valve, drain, tile and glass. The 2025 Cost vs Value report prices a midrange bathroom remodel here at $32,160.
Can a homeowner get a bathroom permit in San Francisco?
Only in a narrow case. DBI lets owners of stand-alone single-family homes that are their primary residence apply to do the work themselves, then visit the Permit Center help desk at 49 South Van Ness with ID. In a condo or flat, a licensed B contractor applies, or you apply as the contractor's authorized agent with their signed Licensed Contractor's Statement.
Do I need a permit to remodel a bathroom in San Francisco?
Yes, for nearly any real remodel. DBI says a permit is needed before renovating and replacing bath fixtures, and replacing bathroom floor covering is not on its exempt list, though painting and similar finish work is. Plumbing and electrical work each need their own permit, which PermitSF prompts you to start from the bath permit application.
What happens if a bathroom was added without a permit?
Legalizing an unpermitted bathroom does not qualify for San Francisco's online kitchen and bath permit. DBI sends it to over-the-counter review, which means drawn plans, two sets brought to the Permit Center, and plan check. DBI notes that homeowners may get a confidential third-party code inspection from a licensed contractor before applying, which helps size the work first.
Check contractor credentials with California CSLB. Match the business identity and scope to the proposal.
Sources
- SF.gov (DBI): Apply for a kitchen or bath remodel permit
- SF.gov (DBI): Get an Over-the-Counter permit for your interior residential remodel
- SF.gov (DBI): Check if your construction project needs a permit
- SF.gov (DBI): Comply with water conservation requirements
- SF.gov (DPH): Work safely to prevent lead poisoning
- DBI GS5 Green Building Submittal Form, residential alterations (Feb 18, 2026)
- San Francisco Public Works: Street Space permit
- San Francisco Public Works: Debris Box permit
- SF Planning: Property Information Map
- California Energy Commission: 2025 Building Energy Efficiency Standards
- California Energy Commission: 2025 Residential Dwelling Units Lighting FAQs
- SF Planning: Sunset District Residential Builders, 1925-1950 Historic Context Statement
- JLC, 2025 Cost vs Value, San Francisco
- DBI 2022 Cost Schedule (valuation used to set permit fees)
- San Francisco DBI building permits, open data
- U.S. Census Bureau, American Housing Survey 2023, Table 16
- U.S. Bureau of Labor Statistics, May 2025 wages, San Francisco-Oakland
- SFPUC, Ultra-High Efficiency Toilet Rebate Program
Keep planning.
Explore the general bathroom remodeling guide for project-wide ideas.
- Kitchen remodeling in San Francisco →
- ADU & garage conversion in San Francisco →
- Roof replacement in San Francisco →
- Outdoor living in San Francisco →
- Decks & pergolas in San Francisco →
- Flooring installation in San Francisco →
Bathroom remodeling in other regions
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Planning guidance, not a quote. Confirm current requirements for your address with the official sources linked above.
