Roofing Calculator
Plan your roof replacement
A new roof in California averages $9–$15/sqft for asphalt and $15–$30/sqft for tile or metal. Pitch and tear-off add 15–40%.
Project inputs
2,000 sqft
$11 /sqft
115%
$2,500
28 years
Total roof cost
$27,800
That's $993/yr over a 28-year lifespan.
Material × area
$22,000
Pitch adjusted
$25,300
Tear-off
$2,500
Cost per year
$993/yr
Resale add (65%)
$18,070
Insurance savings
$350/yr
Lifetime value
$27,870
Resale recoup + estimated insurance savings over the roof's lifespan.
The math, step by step
Transparent formulas using 2026 California market averages. No hidden assumptions.
- 1
Base cost
2000 sqft × $11/sqft = $22,000
- 2
Pitch / complexity
$22,000 × 115% = $25,300
- 3
Tear-off & disposal
+ $2,500
- 4
All-in total
$27,800
- 5
Amortized lifespan
$27,800 ÷ 28 yrs = $993/yr
- 6
Resale add
$27,800 × 65% = $18,070