San Mateo County property record for 525 3rd Ave, San Bruno, CA 94066
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,090 sqft · built 1939 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $403,000 (Feb 2002) |
| Tax Bill | $7,537 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 020-205-100 |
| Primary APN | 020-205-100 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,090 sqft Living Area |
| 1st Floor Area | 730 sqft |
| Family Room | Family Room |
| Year Built | Built 1939 |
|---|---|
| Effective Year Built | Effective 1939 |
| Architectural Style | Ranch |
| Exterior Material | Wood |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 525 3RD AVE |
|---|---|
| City | SAN BRUNO |
| State | CA |
| Zip | 94066-4507 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOTS 35 & 36 BLOCK 26 BELLE AIR PARK RSM 5/10 |
| Legal Subdivision | BELLE AIR PARK |
| Legal Block | 26 |
| Legal Lot Number | 35,36 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 3 |
| Census Block | 3017 |
| Census Tract | 604200 |
525 3rd Ave is owned and occupied by two individuals who acquired it in July 2016.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 525 3RD AVE, SAN BRUNO, CA 94066-4507 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Feb 28, 2002 · Amount on File |
| Deed Sale | Feb 28, 2002 · Amount on File |
| Deed Document Number | 200236470 |
| Last Transfer Date | Jul 8, 2016 |
| Transfer Doc | 0000068867 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 525 3rd Ave was $7,537.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Bruno City |
| Elementary School District | San Bruno Park 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 | $607,236 (+2%) Land $303,618 Building $303,618 | ||
| 2025 | $7,537.00 | $595,330 Land $297,665 Building $297,665 | |
| 2023 | $6,343.00 (+1.15%) | $572,214 Land $286,107 Building $286,107 | $862,110 |
| 2022 | $6,271.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 525 3rd Ave in Zone X, an area of moderate flood risk, within 100 ft of a high-risk flood zone.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 110 policies |
| Nearby Flood Policies | 110 in force |
| Nearby Flood Claims | 12 (1980–2022) |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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 525 3rd 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 | CITY OF SAN BRUNO serves 42,631 people · EPA ID CA4110023 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jul 2024 |
| Lead | Under 1 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 611 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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