Roofers in San Francisco, CA
Compare up to three local San Francisco roofing contractors from Henry's vetted bench — repairs, full replacements and storm damage.
Most San Francisco homeowners pay between $9,000 and $28,000 for a full roof replacement in 2026, with flat torch-down and TPO systems on Victorian and Edwardian row houses running higher per square than pitched asphalt shingle work in the suburbs. Roofers San Francisco crews quote often factor in steep hillside staging, tight lot access, parking permits, and the extra labor of tearing off multiple layers of old built-up roofing common on pre-1940s housing stock. Because so much of the city's roofing is flat or low-slope, material choice matters more here than in most metros: torch-down modified bitumen, TPO membrane, and multi-ply built-up systems dominate quotes, while pitched composition shingle appears mainly on outer Sunset and Richmond cottages. Add in San Francisco Department of Building Inspection permitting, Planning Department review in historic districts, and California's licensing rules for roofing contractors, and the process has more steps than a simple reroof elsewhere. This guide breaks down realistic 2026 price ranges, the permit and license checks worth doing before signing a contract, and the seasonal window that keeps a flat-roof job from turning into a rainy-day emergency.
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Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Clear scope, materials, and pricing in writing—so you know what you're agreeing to.
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How Henry matches you with San Francisco roofers
- Step 1
Tell Henry about the roof
Your ZIP, what's going on up there, and how soon you need it handled. Two minutes, four questions.
- Step 2
Pros are already vetted
Only three Henry Standard roofers in your San Francisco-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
Compare up to three quotes
You hear from three roofers at most — never a list of twenty — and every estimate comes in writing. You pick, or pick nobody.
What roofing costs in San Francisco
| Torch-down/modified bitumen reroof (per sq) | $650 - $1,100 |
| TPO membrane reroof (per sq) | $700 - $1,250 |
| Built-up roof (BUR) tear-off and replace | $800 - $1,400 per sq |
| Composition shingle reroof (pitched roofs) | $9,500 - $18,000 |
| Flat roof repair/patch (localized leak) | $650 - $2,200 |
| Full tear-off, multi-layer Victorian roof | $14,000 - $28,000 |
| Roof inspection with camera/moisture scan | $275 - $550 |
| Gutter and scupper replacement (flat roof) | $1,800 - $4,500 |
Ranges are general estimates gathered from homeowner-reported quotes in the San Francisco area, not an offer or a quote for your roof.
When to schedule roof work in San Francisco
San Francisco's dry season runs roughly May through October, which is the safest window for tear-offs on flat and low-slope roofs where standing water and open membrane seams are riskiest. Fog belt neighborhoods like the Sunset and Richmond District stay damp and cool even in summer, so crews often schedule membrane welding and adhesive work for midday when surfaces are driest. Winter atmospheric river storms between November and March make emergency flat-roof leak calls common, particularly on older built-up roofs near the end of their service life.
Permits, inspections and HOA rules
Reroofing and structural roof repairs in San Francisco require a permit through the San Francisco Department of Building Inspection (DBI), typically filed as an over-the-counter roofing permit at 49 South Van Ness Avenue or through DBI's online permitting portal. Homes in a designated historic district or with Article 10/11 landmark status may also need Planning Department review before DBI issues the permit, especially if the roofline or parapet is visible from the street. Homeowners should confirm with their roofer that a signed permit is pulled before tear-off begins, since unpermitted reroofing can complicate later home sales.
Licensing and insurance in California
California roofing contractors must hold an active C-39 Roofing license issued by the Contractors State License Board (CSLB), and any job over $500 in combined labor and materials legally requires a licensed contractor. Homeowners can verify a contractor's license number, bond status, and any disciplinary history directly on the CSLB website before signing a contract. Given San Francisco's steep-access and historic-building complications, confirming current workers' comp coverage on the same CSLB lookup is worth the extra two minutes.
Why flat and low-slope roofing dominates San Francisco quotes
A large share of San Francisco's housing stock, especially Victorian and Edwardian row houses built before 1930, was designed with flat or very low-slope roofs rather than the pitched shingle roofs common in most American suburbs. That means most roofers San Francisco homeowners call in will be quoting torch-down modified bitumen, TPO single-ply membrane, or older built-up roofing (BUR) rather than asphalt shingles.
This matters for pricing: flat roof systems are usually quoted per square foot of membrane and labor, and multi-layer tear-offs on century-old buildings often reveal rotted decking or old tar layers that add cost once the roof is opened up. Getting a firm bid that includes a per-layer tear-off allowance, not just a flat number, avoids mid-project surprises.
Hillside access and staging costs
Many San Francisco lots sit on steep grades with narrow shared driveways or no off-street parking at all, which pushes up labor time for material hauling, dumpster placement, and crane or hoist use on taller Pacific Heights and Bernal Heights homes. Roofers often need city parking permits to stage a dumpster or lift truck on the street, and that permit cost and lead time should be built into the estimate.
Row houses with shared walls also limit access to one side of the building, so some crews price a 10-15% access premium into hillside or alley-facing jobs compared to a flat, detached lot in the Sunset or Excelsior.
Historic districts and visible facade rules
Neighborhoods with concentrations of landmark Victorians, including parts of Noe Valley and Pacific Heights, fall under Planning Department review for exterior changes visible from the public right-of-way, which can include parapet caps, cornices, and any roofline element visible from the street under Article 10 and Article 11 protections.
A reroof that keeps the same materials and profile usually clears review quickly, but swapping visible roofing materials or altering a parapet can trigger a longer Planning Department process before DBI will issue the building permit.
Choosing between torch-down, TPO, and built-up roofing
Torch-down modified bitumen is a common, cost-effective choice for flat San Francisco roofs and holds up well to fog belt moisture, though it requires open-flame application that some HOAs and buildings restrict. TPO membrane is a newer, heat-welded alternative that resists UV and ponding water well and is increasingly popular on Mission and Potrero Hill flat-roof remodels.
Built-up roofing (BUR), the old gravel-and-tar system found on many pre-1960s buildings, is durable but heavier and pricier to remove; most roofers recommend replacing rather than re-topping a failing BUR system once it's past 25-30 years old.
Lead paint and older-building considerations during roof work
Roof work on pre-1978 buildings can disturb old lead paint on fascia, trim, and parapet surfaces, which brings EPA Renovation, Repair and Painting (RRP) rules and Cal/OSHA lead-in-construction requirements into play even for roofing-only jobs. A roofer working on a Victorian's parapet or trim should be RRP-certified or coordinate containment with a certified painting crew.
Confirming this upfront avoids a mid-project stop-work situation if lead dust containment wasn't planned into the original bid.
Areas Henry covers
Noe Valley · the Sunset · Richmond District · Bernal Heights · Pacific Heights
Common questions
How much does a flat roof replacement cost in San Francisco?
Most flat roof replacements using torch-down or TPO membrane run $9,000 to $22,000 for a typical row house, depending on square footage, tear-off layers, and access difficulty.
Do I need a permit to reroof in San Francisco?
Yes. The San Francisco Department of Building Inspection requires a roofing permit for tear-offs and most repairs, and homes in historic districts may also need Planning Department sign-off first.
How do I check if a roofer is licensed in California?
Search the contractor's name or license number on the CSLB website to confirm an active C-39 Roofing classification, bond status, and any complaint history before signing a contract.
What roofing material works best in San Francisco's fog belt?
TPO and torch-down modified bitumen both handle persistent fog and moisture well; built-up roofing is durable but heavier and typically only makes sense as a replacement, not a repair, once it's aging out.
When is the best time of year to reroof in San Francisco?
May through October is the driest stretch and the preferred window for flat-roof tear-offs, since open membrane seams and exposed decking are vulnerable during winter storms.
Does roof work require lead paint precautions on older homes?
If the building was built before 1978 and the work disturbs painted trim, fascia, or parapets, EPA RRP and Cal/OSHA lead rules apply, so ask whether the crew is RRP-certified.
Why do San Francisco roof quotes vary so much between contractors?
Differences usually come down to access and staging assumptions, how many old roofing layers a contractor expects to remove, and whether Planning Department review time is included in the timeline.
San Francisco roofing guides from The Henry Files
Nearby California markets
Sources
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