San Mateo, CA

Homes in 94402: what they're like and what they need

Quick answer

Half of the 10,764 homes in 94402 (San Mateo) were built before 1958, and 77% before 1980. Gas heats 62% of them, and owners live in 58%. Homes like these usually need a panel check before adding an EV charger or heat pump, earthquake bolting and bracing, and lead-safe painting and remodeling.

Updated November 2026 · Sources: US Census ACS 2020-2024

A plain-English report on the 10,764 homes in ZIP 94402, from public Census and city data, with the repairs and upgrades homes like these usually need.

1958

Typical home built

77%

Built before 1980

62%

Heat with gas

58%

Owner-occupied

What homes in 94402 usually need

Electrical panel check before an EV charger or heat pump

77% of homes here were built before 1980, when panels were often sized for much less load. Check yours before adding big electric items.

Earthquake bolting and bracing

Houses built before 1980 on raised foundations are the ones California's Earthquake Brace + Bolt program offers grants for. Check whether your home qualifies.

Lead-safe painting and remodeling

About 75% of homes here are older than 1978. Painters and remodelers working on them must follow EPA lead-safe rules (RRP certification).

Gas furnace to heat pump

62% of homes in 94402 heat with gas. A heat pump replaces the furnace and adds AC, and local utility rebates often cover a large share.

Older pipes and sewer lines

53% of homes here are from the 1950s or earlier, when galvanized supply pipes and clay or cast-iron sewer lines were common. A camera inspection of the sewer line is cheap insurance.

Roof and gutters before the rains

Half the homes here were built before 1959. Most roofs last 20-30 years, so many are on their second or third. Clean gutters and a roof check before winter storms prevent most leaks.

When homes in 94402 were built

2020 or later1%
2010s7%
2000s3%
1990s6%
1980s6%
1970s12%
1960s12%
1950s18%
1940s15%
1939 or earlier20%

60% are detached houses. 34% heat with electricity. Median owner-reported value: $2,000,000+.

Rebates for 94402 homes

Find what you qualify for

Permits in San Mateo

Which projects need a permit, how long it takes and where to apply.

San Mateo permit checker

Pros serving San Mateo

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Questions about homes in 94402

How old are the homes in 94402?
Half of the 10,764 homes in 94402 (San Mateo) were built before 1958, so the typical home is about 68 years old. 77% were built before 1980 and 11% since 2000.
How do homes in 94402 heat?
62% heat with gas and 34% with electricity. Gas-heated homes are the ones heat pump rebates are aimed at.
Are most homes in 94402 owned or rented?
58% are lived in by their owners and 42% are rented. 60% are detached single-family houses.
What is the median home value in 94402?
The Census estimate of the median owner-reported home value in 94402 is $2,000,000+ (2020-2024 average).

For local pros: trades that fit 94402

Compared with the other 162 ZIPs SVHN serves, homes here are among the best fits for:

  • Water Damage & Mold #20
  • Plumbing #23
  • Chimney & Fireplace #24
  • Electrical #33
  • Remodeling #33
  • Windows & Doors #35
  • General Contractors #38
  • Pest Control #39

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Other San Mateo ZIPs

Housing figures: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates for ZIP code tabulation area 94402 (estimates, via Census Reporter). "What homes usually need" is general guidance based on home age and heating type, not an inspection of any home.

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