Cost guide · checked October 2026
Roof Replacement Cost in Brentwood, CA
Ballpark ranges for a new roof, a tile re-felt and common repairs, taken from named cost guides, with the math shown. Use them to sanity-check bids; your roofer sets the actual price after inspecting.
These are national or statewide figures from the guides cited, not Brentwood quotes. Bay Area labor and permit costs often push local bids toward the upper end.
Cost per square foot by material
| Material / job | Installed cost | Source |
|---|---|---|
| 3-tab asphalt shingle | $3–$5 / sq ft | HomeGuide |
| Architectural asphalt shingle | $4–$6 / sq ft | HomeGuide |
| Asphalt shingle (range incl. premium) | $3.70–$8.75 / sq ft | Forbes Home |
| Concrete tile | $7–$19 / sq ft | This Old House |
| Tile lift and relay (new underlayment) | $2.75–$3.50 / sq ft labor | Fixr |
| Standing-seam metal | $9–$16 / sq ft | HomeGuide |
Roofers often quote per "square": 100 sq ft of roof. $4/sq ft = $400 per square.
Worked examples
Multiply your roof area by the range above. Roof area is larger than floor area once overhangs and pitch are included.
| Roof size | Architectural shingle ($4–$6) | Concrete tile ($7–$19) | Lift & relay labor ($2.75–$3.50) |
|---|---|---|---|
| 1,500 sq ft of roof | $6,000–$9,000 | $10,500–$28,500 | $4,125–$5,250 |
| 2,000 sq ft of roof | $8,000–$12,000 | $14,000–$38,000 | $5,500–$7,000 |
| 2,500 sq ft of roof | $10,000–$15,000 | $17,500–$47,500 | $6,875–$8,750 |
Lift-and-relay figures are labor only; Fixr's all-in estimate for a 2,000 sq ft tile roof is $6,000–$10,000, assuming about 10% tile breakage.
Statewide and national averages
- Angi lists the national average roof replacement at $9,609 (typical $5,902–$46,000) and permits at $100–$1,400 (Angi).
- Angi's California average for a shingle roof replacement is about $15,200, the highest state it shows (Angi).
- Angi's California average for a metal roof is about $16,800 (Angi).
Repair, inspection and add-on costs
| Item | Range | Source |
|---|---|---|
| Roof repair (typical) | $386–$1,875, avg. $1,174 | Angi |
| Roof leak repair | $360–$1,550 | Angi |
| Leak with water damage | $1,000–$6,000+ | HomeGuide |
| Tile roof repair | $500–$2,500 | HomeGuide |
| Roof inspection | $125–$383, avg. $252 (West Coast $250–$1,200) | Angi |
| Solar detach & reset | $200–$300 per panel; ~$2,800–$4,800 for 14–16 panels | Fixr |
What changes the price
- Roof area and pitch: steeper roofs take longer and need more safety equipment.
- Material: tile and metal cost more than asphalt shingles.
- Tear-off: the number of existing layers to remove and dispose of.
- Deck repairs: rotted sheathing is replaced per sheet; ask for the per-sheet price.
- Flashing, vents and skylights: replace or reuse.
- Solar panels: detach and reset is a separate cost, usually by a solar company.
- Permits and code items: such as cool-roof-rated products on qualifying steep-slope reroofs.
- Access and cleanup: tight lots, landscaping protection, debris haul-away.
Getting real numbers
Get at least two written, itemized bids for the same scope. California limits the down payment on home-improvement contracts to 10% of the contract price or $1,000, whichever is less (CSLB). Bid checklist.
Sources
- HomeGuide — Roof Replacement Cost (Nov 7, 2025)
- Forbes Home — Shingle Roof Cost (Feb 7, 2025)
- This Old House — Tile Roof Cost (Apr 10, 2026)
- Fixr — Roof Underlayment Replacement Cost (Jan 31, 2025)
- Angi — Roof Replacement Cost (accessed Oct 2026)
- Angi — Shingle Roof Cost (accessed Oct 2026)
- Angi — Metal Roof Cost (Sep 25, 2026)
- Angi — Roof Repair Cost (Aug 3, 2026)
- HomeGuide — Roof Repair Cost (Feb 9, 2026)
- Angi — Roof Inspection Cost (Sep 23, 2026)
- Fixr — Cost to Remove Solar Panels to Replace a Roof (Jan 31, 2025)
- CSLB — Homeowner Checklists (accessed Oct 2026)
Figures checked October 2026. Cost guides update their numbers; if you spot an outdated figure, let us know. See also our disclaimer and cost sources.
Roof cost questions
What is the average cost of replacing a roof in California?
No official statewide average exists. Angi lists California's average shingle roof replacement at about $15,200 and its average metal roof at about $16,800. Tile roofs and larger homes run higher.
Is $30,000 too much for a roof?
It can be reasonable. At $7–$19 per square foot, a 2,000 sq ft concrete tile roof works out to roughly $14,000–$38,000. A shingle roof that size at $4–$6 per square foot would be about $8,000–$12,000, so a $30,000 shingle bid deserves questions unless it includes major deck work, multiple layers or solar removal.
How much does it cost to replace a roof on a 4,000 sq ft house?
Roofers price by roof area, not living area. A single-story 4,000 sq ft home can have more than 4,000 sq ft of roof once overhangs and pitch are counted; a two-story home of the same size has much less. Multiply the roof area by the per-square-foot range for your material to get a ballpark.
What does a roof repair cost compared with replacement?
Angi lists the typical repair at $386–$1,875 (average $1,174). Targeted repairs are usually the better value when damage is localized and the roof has years of life left.
East Contra Costa communities we cover
Requests come from homeowners across the eastern end of Contra Costa County, along Highway 4 and the Delta.
Get a written estimate for your roof
Tell us what's going on with your roof. We pass your request to an independent local roofing contractor serving East Contra Costa, who contacts you to inspect and quote. There's no cost to send a request.
- Takes about a minute
- No obligation to hire
- Ask for a written, itemized estimate