San Mateo County property record for 421 37th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 2,860 sqft · built 1975 |
| Lot Size | 0.133 acres (5,777 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,120,000 (Jan 2008) |
| Tax Bill | $19,613 (2025) |
| Deeds & Mortgages | Mar 2022 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 042-082-040 |
| Primary APN | 042-082-040 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,860 sqft Living Area |
| Gross Area | 3,290 sqft |
| 1st Floor Area | 1,880 sqft |
| 2nd Floor Area | 540 sqft |
| Basement Area | 430 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,777 sqft (0.133 acres) |
| Lot Dimensions | 79 ft deep x 72 ft wide |
| Garage Type | Basement |
| Garage Area | 430 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 421 37TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-4328 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10000 |
| Legal Description | ON SLY LN OF 37TH AVE LYING ELY OF & ADJ LOT 1 BLOCK 32 OF SAN MATEO KNOLLS NO 3 PTN L 70 LAUREL CREEK FARMRSM A/65 CITY OF SAN MATEO |
| Legal Subdivision | LAUREL CREEK FARM |
| Legal Block | 32 |
| Legal Lot Number | 1,70 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 607100 |
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 421 37TH AVE, SAN MATEO, CA 94403-4328 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 8, 2008 · Amount on Record |
| Deed Sale | Jan 8, 2008 · Amount on Record |
| Prior Sale | Oct 20, 2003 · Amount on Record |
| Deed Document Number | 20082067 |
| Last Transfer Date | Feb 14, 2022 |
| Transfer Doc | 0000017952 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 1, 2022 |
| Property Address | 421 37TH AVE, SAN MATEO, CA 94403-4328 |
| Document Number | 0000017952 |
| Map Reference | MB A PG 65 |
| Instrument Date | Feb 14, 2022 |
| Instrument | 2022-017952 |
| Transaction Type | Transfer |
| Record Updated | Oct 18, 2022 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 421 37TH AVE, SAN MATEO, CA 94403-4328 |
| Document Number | 0000017953 |
|---|---|
| Date | Mar 1, 2022 |
| Instrument | 2022-017953 |
| Name | PROVIDENT CU |
|---|---|
| Type | Credit Union |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
Source: San Mateo County assessment roll, as of July 15, 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) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,500,542 (+2%) Land $750,271 Building $750,271 | ||
| 2025 | $19,613.00 (+9.96%) | $1,471,120 (+4.04%) Land $735,560 Building $735,560 | |
| 2023 | $17,836.00 (-2%) | $1,413,998 Land $706,999 Building $706,999 | $2,034,900 |
| 2022 | $18,200.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (2006) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2006 · Severe Storms, Flooding, Mudslides, And Landslides |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008 |
|---|---|
| Water Source | Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM |
| Last State Inspection | Mar 2025 |
| Lead | 4 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 572 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: T-Mobile.
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