What are the steps, start to finish?
- Sign a written contract
- Roofer applies for the permit
- Materials arrive
- Old roof comes off and the deck is checked
- Rotten sheathing is replaced under a written change order
- New roof goes on
- Site cleanup and nail sweep
- City or county final
What slows a roof replacement down?
Rain is the biggest wild card from November through March; good crews open only as much roof as they can dry-in the same day. Other delays: decking repairs, special-order colors, tile, and solar removal. Change orders must be written (B&P 7159.6).
How do permits affect the timeline in San Francisco?
San Francisco reroof permits can be issued online for licensed C-39 contractors when no structural work is needed; decking replacement needs an over-the-counter building permit (SF.gov). Street space for a dumpster, three-story access and parapet flashing usually affect the schedule more than the permit.
Can I replace a roof in the rainy season?
It's common in San Francisco, just slower. A careful roofer schedules around storms using the NWS forecast; see our rainy-season reroofing guide.
How do I get a schedule for my roof?
Ask for an estimated start date and number of working days in the contract. For your actual price, request a free written estimate: a licensed roofer measures the roof and prices your exact scope. More: permits, what to expect.
Every roofer we work with is licensed, insured and highly reviewed by Bay Area homeowners.
Get a free replacement quoteFrequently asked questions
How many days does a roof replacement take?
Often a few days on site for a simple roof; longer for complex roofs, tile, flat roofs, decking or weather.
Do tile roofs take longer?
Usually; tile is heavier and slower to lift, re-underlay and relay.
Sources
Sources reviewed November 12, 2026. Figures are published estimates and official fees, not quotes. Confirm prices, permits and requirements with your contractor and building department. This page is general information, not legal or insurance advice.