Home Addition Cost in California (2026)
Compare home addition costs across 5 cities in California. Prices range from $64,900 in Sacramento to $86,900 in San Francisco.
State average
$76,240
Range
$64,900 – $86,900
Cities tracked
5
City comparison
| City | Avg cost | Budget range | High-end range | vs state avg |
|---|---|---|---|---|
| San Francisco, CA | $86,900 | $28,400–$34,800 | $170,600–$218,000 | +14% |
| San Jose, CA | $83,600 | $27,400–$33,400 | $164,200–$209,800 | +10% |
| Los Angeles, CA | $75,400 | $24,700–$30,100 | $148,000–$189,100 | -1% |
| San Diego, CA | $70,400 | $23,000–$28,200 | $138,200–$176,600 | -8% |
| Sacramento, CA | $64,900 | $21,200–$26,000 | $127,400–$162,800 | -15% |
Explore each city
San Francisco, CA
Avg: $86,900 · $28,400–$218,000
San Jose, CA
Avg: $83,600 · $27,400–$209,800
Los Angeles, CA
Avg: $75,400 · $24,700–$189,100
San Diego, CA
Avg: $70,400 · $23,000–$176,600
Sacramento, CA
Avg: $64,900 · $21,200–$162,800
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Frequently asked questions
The average home addition in California costs $76,240. Prices range from $64,900 in Sacramento to $86,900 in San Francisco. Costs vary by city due to differences in labor rates, material availability, and local code requirements.