We use cookies for essential site functions and, with your permission, for analytics and advertising. California residents can opt out of the sale or sharing of personal information at any time. See our Privacy Policy, Cookie Policy, and Do Not Sell or Share My Personal Information.
Tile, shingle, and flat roofs — what each really costs here and what the sun does to them.
Last updated
A shingle re-roof on a typical 1,800 sq ft San Diego home runs about $11,000–$20,000, concrete tile $18,000–$35,000, clay tile $25,000–$50,000, and a flat TPO or torch-down roof $10,000–$22,000. Our climate is deceptively hard on roofs: constant UV cooks asphalt shingles to a 20–25 year life, coastal salt air corrodes fasteners and flashing, and the two or three real storms a year find every failure at once. Tile roofs frequently need only an underlayment replacement — the tiles get lifted, stacked, and reset over new underlayment for roughly 60–70% of a full tear-off. Re-roofs require a permit, and California's Title 24 cool-roof requirements apply to most replacements. Verify a C-39 roofing license, get three bids that specify underlayment type and flashing details, and never pay more than the legal 10% or $1,000 deposit.
| Material | Cost per sq ft installed | Expected life |
|---|---|---|
| Architectural asphalt shingle | $6–$11 | 20–25 years here |
| Concrete tile | $10–$19 | 40–50 yrs (underlayment 20–25) |
| Clay tile | $14–$28 | 50+ yrs (underlayment 20–25) |
| Standing seam metal | $14–$26 | 40–60 years |
| TPO / single-ply flat | $6–$12 | 20–25 years |
| Torch-down modified bitumen | $5–$10 | 15–20 years |
| Tile underlayment replacement | $7–$13 | Reuses existing tile |
| Roof repair (small leak) | $400–$1,500 | Flashing and cracked tile are the usual causes |
| Permit | $300–$900 | Varies by city and valuation |
Concrete and clay tile outlive the felt beneath them by decades. If your tile roof leaks at 25 years, you almost certainly need a lift-and-relay underlayment job, not new tile — and any roofer pushing full tile replacement should explain why.
Chimneys, skylights, vents, and wall transitions cause the large majority of leaks. Ask specifically what flashing is being replaced, not just the field material.
Within a few miles of the water, galvanized fasteners and flashing rust out early. Specify stainless or heavy-gauge coated metal on coastal jobs.
Our sun shortens asphalt shingle life relative to the manufacturer's rating. A '30-year' shingle is realistically 20–25 years here.
Common on mid-century and Craftsman additions. Water sitting more than 48 hours after rain means the drainage needs fixing before any new membrane goes down.
If panels are already up, budget $2,000–$5,000 to remove and reinstall them. Always re-roof before adding solar if the roof is near end of life.
Re-roofs need a building permit from your city — Development Services in the City of San Diego, or the County for unincorporated areas. The final inspection protects you at resale.
California's energy code sets solar reflectance and thermal emittance minimums for most re-roofs in our climate zone. Your bid should name a compliant product.
Code generally allows at most two layers of roofing. If you already have two, a full tear-off is mandatory — some cheap bids quietly assume otherwise.
Homes in designated fire hazard zones need Class A assemblies and ember-resistant vents. This affects material choice in the backcountry and hillside communities.
California insurers pay for sudden damage, not wear-out. Storm damage claims are legitimate; a roofer promising to 'get insurance to buy you a new roof' on an old worn roof is describing fraud.
Roofing is the one trade where CSLB requires workers' compensation even for contractors with no employees. Ask for the certificate.
Tear-off vs. layover, underlayment type and weight, flashing replacement, and dry-rot allowance must match or the numbers mean nothing.
Every bid should state a per-sheet or per-board rate for replacing rotted decking found after tear-off. Undefined 'as needed' language is where bids balloon.
The manufacturer covers material; the roofer covers workmanship. Ten years of workmanship warranty from an established local company is meaningful; a one-year warranty is not.
C-39 roofing on an active CSLB license, with the bond and workers' comp current.
Legal deposit cap is $1,000 or 10%, whichever is less, then progress payments tied to completed phases. Never pay in full before final inspection.
Out-of-area crews appear after every rain event. Local address, local references, and years in business at the same license number are the filters.
For a typical 1,800 sq ft home: about $11,000–$20,000 for architectural asphalt shingle, $18,000–$35,000 for concrete tile, $25,000–$50,000 for clay tile, and $10,000–$22,000 for a flat membrane roof. Steep pitch, multiple stories, and dry-rot repairs add to all of these.
Asphalt shingle realistically 20–25 years given our UV exposure, concrete and clay tile 40–50+ years, but the underlayment beneath tile only lasts 20–25 years and is usually what needs replacing.
Usually yes, and it is the right call. The tiles are lifted and stacked, new underlayment goes down, and the same tiles are reset with broken pieces swapped out. It costs roughly 60–70% of a full replacement.
Yes. Re-roofing requires a building permit and an inspection, and most replacements must meet California Title 24 cool-roof requirements. Unpermitted roofs create disclosure problems when you sell.
California law caps the down payment on a home improvement contract at $1,000 or 10% of the price, whichever is less. Anything more is a red flag regardless of the explanation.
If the roof has under about ten years of life left, yes. Removing and reinstalling a solar array to re-roof later costs $2,000–$5,000 extra.
The Sandi Spots Newsletter
New beach finds, hidden taco shops, weekend events, and seasonal guides — once a week from a local. No spam, ever.
One email a week. Unsubscribe anytime.
Written and fact-checked by the Sandi Spots Editorial team — San Diego residents publishing under Sleep Coast LLC. Every place we recommend has been visited in person or verified against an official source, and no business can pay for inclusion or a higher ranking. Last updated .