San Mateo County property record for 21 E 40th Ave, San Mateo, CA 94403 · Last verified August 2026
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
|---|---|
| Bedrooms | 10 Beds |
| Bathrooms | 1 Baths |
| Year Built | Built 1961 |
| Square Footage | 6,808 sqft Living Area |
| Lot Size | 6,250 sqft (0.144 acres) |
| Garage | Detached |
| Last Sale | $1,585,000 (2007) |
| Tax Bill | $34,185.00 (2025) |
| Primary APN | 040-072-170 |
|---|
| Bedrooms | 10 Beds |
|---|---|
| Full Baths | 1 Baths |
| Total Rooms | 22 Rooms |
| Units | 6 Units |
| Building Area | 6,808 sqft Living Area |
| Stories | 2 Stories |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | Multifamily Style |
| Lot Area | 6,250 sqft (0.144 acres) |
| Depth X Width | 125 ft x 50 ft Depth x Width |
| Parking Spaces | 10 Parking Spaces |
| Garage Type | Detached Garage |
| Street Address | 21 E 40TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-7831 |
| Property Usage | Residential Property Usage |
| Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | 50 FT X 125 FT ON 40TH AVE COM 47.78 FT FRM PACIFIC BLVD PTNOF LOT 4 SAN MATEO GARDENS RSM 20/14 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO GARDENS |
| Legal Lot Number | 4 |
| Jurisdiction | SAN MATEO CA |
| Minor Civil Division | SAN MATEO |
| Census Blockgroup | 1 |
| Census Block | 1012 |
| Census Tract | 608501 |
Source: San Mateo County records · APN 040-072-170
Assessment roll updated July 15, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 845 OAK GROVE AVE, 115, MENLO PARK, CA 94025-4445 |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Apr 20, 2007 · Amount on Record |
| Deed Sale | Apr 20, 2007 · Amount on Record |
| Prior Sale | Jun 10, 2005 · Amount on Record |
| Deed Doc Number | 200761074 |
| Last Transfer Date | Aug 28, 2007 |
| Transfer Doc | 0000133565 |
| Record Refreshed | Sep 20, 2026 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Mateo City |
| Elementary School District | San Mateo-Foster City Elementary School District (KG - 08) |
| Secondary School District | San Mateo Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,166,023 (+2%) Land $819,943 Building $1,346,080 | |
| 2025 | $34,185.00 (+1.46%) | $2,123,553 (+4.04%) Land $803,866 Building $1,319,687 |
| 2023 | $33,693.00 (+5.76%) | $2,041,094 Land $772,651 Building $1,268,443 |
| 2022 | $31,857.00 |
Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk to Homes | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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