San Mateo County property record for 134 43rd Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,710 sqft · built 1950 |
| Lot Size | 0.117 acres (5,082 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,000,000 (Jul 2023) |
| Tax Bill | $25,243 (2025) |
| Deeds & Mortgages | Jul 2023 Transfer Jul 2023 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 042-261-220 |
| Primary APN | 042-261-220 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,710 sqft Living Area |
| 1st Floor Area | 1,060 sqft |
| Basement Area | 130 sqft |
| Finished Basement | 130 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Lot Area | 5,082 sqft (0.117 acres) |
| Lot Dimensions | 78 ft deep x 65 ft wide |
| Garage Area | 330 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 134 43RD AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-5114 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1000C |
| Legal Description | LOT 19 BLOCK 22 SAN MATEO KNOLLS MAP NO 2 RSM 24/61 62 CITY OF SAN MATEO |
| Legal Subdivision | SAN MATEO KNOLLS MAP NO 2 |
| Legal Block | 22 |
| Legal Lot Number | 19 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2026 |
| Census Tract | 607200 |
134 43rd Ave is owned and occupied by two individuals who bought it in July 2023.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 134 43RD AVE, SAN MATEO, CA 94403-5114 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 27, 2023 | Intrafamily Transfer, Transfer LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Jul 27, 2023 | Grant Deed, Transfer · Conventional Mortgage CATHAY BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 27, 2023 · Amount on File |
| Deed Sale | Jul 27, 2023 · Amount on File |
| Deed Document Number | 202336176 |
| Prior Transfer Date | Jan 18, 2023 |
| Prior Transfer Doc | 0000003681 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 27, 2023 |
| Property Address | 134 43RD AVE, SAN MATEO, CA 94403-5114 |
| Document Number | 0000036177 |
| Map Reference | MB 24 PG 60-62 |
| Instrument Date | Jun 30, 2023 |
| Instrument | 2023-036177 |
| Transaction Type | Transfer |
| Record Updated | Aug 28, 2023 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 134 43RD AVE, SAN MATEO, CA 94403-5114 |
| Investor | Possibly a Property Investor |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 27, 2023 |
| Property Address | 134 43RD AVE, SAN MATEO, CA 94403-5114 |
| Document Number | 0000036176 |
| Map Reference | MB 24 PG 60-62 |
| Instrument Date | Jun 30, 2023 |
| Instrument | 2023-036176 |
| Transaction Type | Transfer |
| Record Updated | Aug 28, 2023 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $12,200.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 134 43RD AVE, SAN MATEO, CA 94403-5114 |
| Investor | Possibly a Property Investor |
| Document Number | 0000036178 |
|---|---|
| Date | Jul 27, 2023 |
| Instrument | 2023-036178 |
| Name | CATHAY BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2053 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.62% |
| Type Change Date | Aug 1, 2026 |
| Change Frequency | Annually |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 12.6% |
| Index | 1-Year T-Bill |
| Max Rate | 12.6% |
The 2025 property tax bill for 134 43rd Ave was $25,243.
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 | $2,080,800 (+2%) Land $1,456,560 Building $624,240 | ||
| 2025 | $25,243.00 | $2,040,000 Land $1,428,000 Building $612,000 | |
| 2023 | $2,947.00 (+30.8%) | $130,157 Land $32,921 Building $97,236 | $1,751,490 |
| 2022 | $2,253.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 134 43rd 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 134 43rd 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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