Home Insurance in Foster City, California
The median home value in Foster City is $1,838,200, 18% higher than the San Mateo County median.
The typical home in Foster City was built around 1976. About 4% of homes were built before 1960, about 37 points below San Mateo County's 40%. Because older housing stock often has aging wiring, roofing or plumbing, it can cost more to insure or rebuild.
The housing stock in Foster City is 54% single-family homes and 39% apartments in buildings with 5+ units.
65% of owner-occupied homes in Foster City carry a mortgage, and mortgage lenders require hazard insurance for as long as the loan is active.
The vacancy rate is 5%; vacant or unoccupied homes typically need a different coverage form than an owner-occupied policy. About 51% of occupied homes in Foster City are owner-occupied.
Most homes in Foster City - 57% - are primarily heated with natural gas.
San Mateo County's top FEMA-rated hazard is earthquake (Relatively High), per FEMA's National Risk Index. San Mateo County had 4,143 active NFIP flood policies as of September 2026. See the full San Mateo County home insurance overview for all FEMA hazard ratings and flood coverage details. Earthquake damage is excluded from a standard homeowners policy.
In California, the statewide average premium for a standard HO-3 homeowners policy is $1,655 per year (NAIC, 2023 data).
Key figures
| Median home value | $1,838,200 |
|---|---|
| Median year built | 1976 |
| Owner-occupied share | 51% |
| Share of owner-occupied homes with a mortgage | 65% |
| Top county hazard | Earthquake (Relatively High) |
| Active NFIP policies in San Mateo County | 4,143 |
| Home insurance premium | $1,655 - statewide average (NAIC, 2023 data) |
Nearby towns
Sources
Data last updated: 2026-09-29
- U.S. Census Bureau Gazetteer Files (2024)
- U.S. Census Bureau, American Community Survey 2020-2024 5-Year Estimates (2024)
- FEMA National Risk Index (December 2025)
- FEMA OpenFEMA NFIP Redacted Policies v3 (2026)
- NAIC Dwelling Fire, Homeowners Owner-Occupied, and Homeowners Tenant and Condominium/Cooperative Unit Owners Insurance: Data for 2023 (published 2026) (2023)