San Mateo County property record for 143 41st Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,410 sqft · built 1940 |
| Lot Size | 0.115 acres (5,001 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $820,000 (May 2004) |
| Tax Bill | $16,185 (2025) |
| Deeds & Mortgages | Aug 2022 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 042-237-010 |
| Primary APN | 042-237-010 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,410 sqft Living Area |
| 1st Floor Area | 1,120 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 5,001 sqft (0.115 acres) |
| Lot Dimensions | 93 ft deep x 55 ft wide |
| View / Lot | Corner |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 143 41ST AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-5107 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 1 BLOCK 4 SAN MATEO KNOLLS RSM 22/8 9 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO KNOLLS |
| Legal Block | 4 |
| Legal Lot Number | 1 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2018 |
| Census Tract | 607200 |
143 41st Ave is owner-occupied and held in a trust since October 2016.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 143 41ST AVE, SAN MATEO, CA 94403-5107 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 14, 2004 · Amount on File |
| Deed Sale | May 14, 2004 · Amount on File |
| Prior Sale | Jul 30, 1999 · Amount on File |
| Deed Document Number | 200499507 |
| Last Transfer Date | Oct 19, 2016 |
| Transfer Doc | 0000119107 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 143 41ST AVE, SAN MATEO, CA 94403-5107 |
| Transaction Type | Mortgage |
| Record Updated | Sep 14, 2022 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 143 41ST AVE, SAN MATEO, CA 94403-5107 |
| Document Number | 0000061657 |
|---|---|
| Date | Aug 18, 2022 |
| Instrument | 2022-061657 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 300 Months |
| Due | Aug 26, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 143 41st Ave was $16,185 with a homeowner's exemption.
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 | $1,282,804 (+2%) Land $594,584 Building $688,220 | ||
| 2025 | $16,185.00 Homeowner's exemption | $1,257,652 Land $582,926 Building $674,726 | |
| 2023 | $14,024.00 (-4.37%) Homeowner's exemption | $1,120,584 Land $560,292 Building $560,292 | $1,372,770 |
| 2022 | $14,665.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 143 41st Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1986.
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 Claims | 1 (1986) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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.
The area around 143 41st Ave has no burnable land within ember reach, so its wildfire risk is not rated.
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 785 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 | 1,500 / 50 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile.
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