How much does roof replacement cost in San Francisco?
Short answer: most asphalt shingle roof replacements on San Francisco homes cost $10,000 to $22,000 for a roof of about 1,500 sq ft, and $15,000 to $30,000 for about 2,000 sq ft. Flat roofs typically run $8,000 to $30,000. Most repairs cost $500 to $5,000.
These are planning ranges for 2026, not quotes. Every roof is different, and an on-site inspection is the only way to get an accurate number. Our roof inspections are free.
Typical costs in San Francisco (2026)
| Service | Typical range |
|---|---|
| Roof repair | $500 to $5,000 |
| Asphalt shingle replacement (about 1,500 sq ft of roof) | $10,000 to $22,000 |
| Asphalt shingle replacement (about 2,000 sq ft of roof) | $15,000 to $30,000 |
| Flat roof replacement (modified bitumen) | $8,000 to $30,000 |
| Deck or skip sheathing repair (older homes) | $1,000 to $5,000 |
| Gutter installation | $1,500 to $5,000 |
| Roof inspection and written report | Free |
Replacement ranges include tear-off, disposal, materials, labor, standard flashing and cleanup. Deck and structural repairs are priced separately.
Why San Francisco roofs cost more
Labor. Skilled roofing labor in the Bay Area costs more than in most of the country. It is the largest single part of your price.
Permits. San Francisco's Department of Building Inspection requires a permit for reroofing, and Peninsula cities have their own requirements. Roofing permits explained →
Access. Steep streets, narrow lots and limited parking in neighborhoods like Potrero Hill, Noe Valley and the Sunset make material delivery, staging and debris removal slower.
Older homes. Many homes built before 1970 have spaced board decking (skip sheathing). Modern shingles need a solid deck, so it is commonly filled in or replaced during replacement, adding $1,000 to $5,000. What happens when deck damage is found →
What affects your price
Roof size
Measured in squares (100 sq ft). A typical San Francisco single-family roof runs 1,200 to 2,500 sq ft.
Pitch
Steeper roofs need more safety equipment and labor. Anything well above a 4:12 pitch adds cost.
Material
Asphalt shingle is the most affordable pitched roof. Flat roof cost depends on size, drainage and parapet detailing.
Layers
Two or more old layers increase tear-off and disposal costs.
Access
Multi-story homes, steep streets and no driveway make staging and debris removal harder.
Decking
Pre-1970 San Francisco homes often have skip sheathing that must be filled in or replaced under new shingles.
Permits
Reroofing requires a permit in San Francisco and most Bay Area cities. Fees vary by city and scope.
Penetrations and complexity
Chimneys, skylights, vents, dormers, valleys and multiple roof levels all add flashing work.
Roof size is not home size
Roof square footage is not your home's interior living area. Pitch, overhangs and roof shape can make the roof 20 to 50 percent larger than the floor plan, which is why on-site measurement matters.
Repair or replace?
If the roof still has useful life and the damage is limited to one area, such as a few missing shingles or a leak at a pipe boot or skylight, repair is usually the right call and costs a fraction of replacement. Roof repair →
Replacement makes sense when leaks keep returning in different places, repair costs keep adding up, or an inspection shows widespread underlayment or deck failure. Roof replacement →
How to compare estimates
Get estimates from licensed contractors and compare scope, not just price. Every estimate should name the specific materials, and detail tear-off, underlayment, flashing, ridge cap, drip edge, cleanup, timeline, and what happens if hidden damage is found.
Be cautious of a price far below the others. In roofing, a low number usually means something is left out: thinner underlayment, reused flashing, no permit, or underinsured labor. How to compare roofing estimates →
Common cost questions
How much does a new roof cost in San Francisco?+
How much does a roof repair cost?+
Is the roof inspection free?+
Why do San Francisco roofs cost more than national averages?+
What can make my price go up after work starts?+
General estimates for planning purposes only. Actual costs depend on your property, roof condition, material selection, access and other factors.
Get an accurate quote
Request a free on-site inspection and receive a written proposal within 48 hours.