# SF Roof Replacement
> Independent referral service that helps homeowners in the City and County of San Francisco decide whether to replace an old roof and connects them with an independent, licensed C-39 roofing contractor for a free estimate. Guides cite public sources (Cost vs. Value 2025, city and county permit pages, California law including SB 1301). Updated November 11, 2026.

## Key answers
- [What does it cost to replace a roof in San Francisco?](https://sfroofreplacement.com/guides/roof-replacement-cost-san-francisco/): The 2025 Cost vs. Value report prices a midrange 30-square (about 3,000 square foot) roof replacement in the San Francisco metro at roughly $38,000 for asphalt shingles and roughly $65,000 for metal. Your own roof's price will differ; a free written estimate is the only real number.
- [Should I repair my San Francisco roof or replace it?](https://sfroofreplacement.com/guides/repair-or-replace-roof-san-francisco/): Repair a San Francisco roof when the problem is local, such as one failed drain, a cracked parapet cap or a few lifted shingles, and the rest has life left. Replace it when the membrane is blistered or split across the roof, leaks keep moving, or past overlays leave no sound base.
- [How long does a roof last in San Francisco's fog and salt air?](https://sfroofreplacement.com/guides/how-long-does-a-roof-last-san-francisco/): InterNACHI lists architectural shingles at about 30 years, modified bitumen flat roofs at about 20 and built-up roofs at about 30. San Francisco's mild climate spares roofs from heat, but constant fog, wind-driven rain and salt air wear flashing, fasteners and flat-roof seams first.
- [What are the signs a San Francisco roof needs replacing?](https://sfroofreplacement.com/guides/signs-you-need-a-new-roof/): In San Francisco, watch for blistered or split flat-roof membranes, water standing days after rain, stained ceilings below parapets and scuppers, leaks around Victorian bay windows, and rusted flashing on the ocean side. Several of these together usually mean replacement rather than another repair.
- [How do I get a reroof permit in San Francisco?](https://sfroofreplacement.com/guides/roof-replacement-permits-san-francisco/): San Francisco's Department of Building Inspection issues every reroof permit. A licensed C-39 contractor can apply online on PermitSF when no plans or structural work are needed; otherwise it's an over-the-counter building permit. Fees vary by valuation; see DBI's current fee schedule, and the street-space fee is included.
- [Does a San Francisco roof have to be Class A fire-rated?](https://sfroofreplacement.com/guides/class-a-fire-rated-roof-san-francisco/): Most San Francisco homes aren't in the wildland areas where state law requires a Class A roof, but check your address on the 2025 fire hazard maps. Class A is still worth choosing: asphalt shingles, tile and metal usually qualify, and a Class A roof counts toward the state's Safer from Wildfires insurance discounts.

## El Niño 2026–27 and your roof
- [Should I replace my San Francisco roof before El Niño rain?](https://sfroofreplacement.com/guides/el-nino-roof-replacement-san-francisco/): Replace before the storms only if the roof is already worn out. NOAA expects a strong El Niño through early 2027 but can't promise a wet San Francisco winter. Downtown San Francisco had 0.42 inches of rain by November 11, 21% of normal, so dry windows may still open for a flat-roof job.

## Get a quote
- [Request a roof replacement quote](https://sfroofreplacement.com/roof-replacement/): Tell us your situation, the roof's rough age, your timeline and ZIP code. We pass it to one independent, licensed C-39 roofer who replaces roofs in San Francisco. They call to arrange a look at the roof, flat or pitched, and give you a free written estimate. You decide whether to hire them.

## Cost and quotes
- [How much does a new roof cost for my size home in San Francisco?](https://sfroofreplacement.com/guides/new-roof-cost-by-home-size-san-francisco/): Expect a full replacement to run in the tens of thousands of dollars for most homes in San Francisco, with size, pitch and local factors deciding where yours falls. This page turns your home's size into an approximate roof area in squares, lists the cost factors to check, and connects you with a roofer for an exact price.
- [How do roofers handle dry rot and spaced sheathing on San Francisco reroofs?](https://sfroofreplacement.com/guides/roof-dry-rot-decking-san-francisco/): It depends on how much wood is bad, which nobody knows until tear-off. A San Francisco roof may need a few sheets replaced or an entire new deck over spaced boards. The protection is a contract with a stated unit price for decking and written change orders. Request a free estimate.
- [Getting a new roof with solar panels in San Francisco: what does removal and reinstall add?](https://sfroofreplacement.com/guides/solar-panel-removal-reroof-san-francisco/): Removing and reinstalling solar for a reroof in San Francisco is a separate line item that can add thousands of dollars, mostly driven by panel count, racking type and roof access. A solar or electrical contractor handles the disconnect and reconnect. Get the solar work and the roof priced together in a free written estimate.

## City guides
- [What should Sunset homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/sunset-parkside-roof-replacement/): Replacing a roof in the Sunset and Parkside means planning around ocean fog and salt, rows of 1930s-50s stucco homes with flat roofs behind parapets, and the city's busiest reroof permit district. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Richmond District homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/richmond-district-roof-replacement/): Replacing a roof in the Richmond means planning around Edwardian flats and row houses, foggy salt air from Ocean Beach, many pre-1940 buildings and DBI's online reroof permit. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should West of Twin Peaks homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/west-of-twin-peaks-roof-replacement/): Replacing a roof in West of Twin Peaks means planning around detached houses in residence parks, hillside streets around Mount Davidson, tile and steep-slope roofs, and heavy reroof activity. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Noe Valley homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/noe-valley-roof-replacement/): Replacing a roof in Noe Valley means planning around Victorian and Edwardian homes with steep front gables, warmer east-side weather, hillside streets and DBI's reroof permit. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Bernal Heights homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/bernal-heights-roof-replacement/): Replacing a roof in Bernal Heights means planning around cottages on steep, narrow hillside streets, older homes with layered roofs, wind on the hilltop and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Excelsior homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/excelsior-roof-replacement/): Replacing a roof in the Excelsior means planning around mostly owner-occupied detached homes from the 1910s-40s, sloped and flat roofs, fog from the south and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Visitacion Valley homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/visitacion-valley-roof-replacement/): Replacing a roof in Visitacion Valley means planning around mid-century homes on sloping streets next to McLaren Park, wind through the valley, owner-occupied houses and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Bayview homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/bayview-roof-replacement/): Replacing a roof in Bayview means planning around sunnier bayside weather, older homes next to newer Hunters Point construction, salt air off the bay and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Mission District homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/mission-district-roof-replacement/): Replacing a roof in the Mission means planning around Victorian flats and row houses, flat roofs behind parapets, the Liberty Hill landmark district and the city's sunniest weather. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Glen Park homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/glen-park-roof-replacement/): Replacing a roof in Glen Park means planning around hillside homes around Glen Canyon, eucalyptus and tree litter, older houses with layered roofs and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Marina District homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/marina-district-roof-replacement/): Replacing a roof in the Marina means planning around stucco homes on bayfront fill, wind and salt air off the Golden Gate, many pre-1940 buildings and DBI permits. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.
- [What should Pacific Heights homeowners know before replacing a roof?](https://sfroofreplacement.com/guides/pacific-heights-roof-replacement/): Replacing a roof in Pacific Heights means planning around large Victorians and Edwardians on steep streets, slate and complex rooflines, landmark districts and DBI's historic review. Have a licensed C-39 roofer inspect it, confirm the permit and fire rules for your address, and put the price in writing. Request a free estimate below.

## Neighborhood estimates
- [Which San Francisco neighborhoods are due for new roofs?](https://sfroofreplacement.com/guides/roof-replacement-by-neighborhood-san-francisco/): Reroof permits since 2001 cover only a fraction of San Francisco's older housing. Using DataSF permit records and Census housing counts, we estimate the permit rate for each ZIP code. Outer neighborhoods with mostly single-family homes vary widely, which hints at where roofs may be due. A free roof inspection tells you about yours.

## Materials and roof types
- [Standing seam or stone-coated steel: what does a metal roof cost in San Francisco?](https://sfroofreplacement.com/guides/metal-roof-cost-san-francisco/): Expect a metal roof in San Francisco to cost substantially more than asphalt, often well into the tens of thousands of dollars, with standing seam usually above stone-coated steel. In exchange you get a long service life and a Class A option. Your exact price depends on size, pitch and tear-off, so get a written estimate.
- [TPO or torch-down: what does a new flat roof cost in San Francisco?](https://sfroofreplacement.com/guides/flat-roof-replacement-san-francisco/): Flat roof replacement in San Francisco is usually priced as a membrane project, and most full jobs run in the tens of thousands of dollars, depending on size, drainage, parapets, insulation and access. TPO and torch-down modified bitumen are both common; neither is right for every roof. A free written estimate prices yours.
- [How do I hire a flat roof replacement contractor in San Francisco?](https://sfroofreplacement.com/guides/flat-roof-replacement-contractor-san-francisco/): Hire a C-39 licensed roofer who installs low-slope membranes every week, not mainly shingles. San Francisco flat roofs sit behind parapets with scuppers, drains, skylights and sometimes decks, and most leaks start at those edges. Ask for the system, the parapet and drain details and the DBI permit in writing. Request a free estimate below.

## Codes, permits and fire
- [What is a cool roof, and is one required for a reroof in San Francisco?](https://sfroofreplacement.com/guides/cool-roof-requirements-san-francisco/): Usually not in San Francisco. A cool roof is a product rated to reflect sunlight and shed heat, and California requires one on qualifying reroofs only in certain climate zones. Most homes here sit outside them. You can still choose a reflective product. Find your city below and get a free written estimate.

## Planning and hiring
- [How long does a new roof take in San Francisco?](https://sfroofreplacement.com/guides/how-long-does-a-new-roof-take-san-francisco/): Most of a San Francisco reroof's calendar is waiting for permits, materials and dry weather; the installation itself is often a few days for a simple roof. Tile, foam, steep or cut-up roofs and decking repairs take longer. Get a written schedule along with your free estimate.

## All guides
- [Guide index](https://sfroofreplacement.com/guides/): every guide on this site by topic

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