San Mateo County property record for 581 4th Ave, San Bruno, CA 94066
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 880 sqft · built 1940 |
| Lot Size | 0.086 acres (3,750 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $500,000 (May 2013) |
| Tax Bill | $8,101 (2025) |
| Deeds & Mortgages | Mar 2019 Transfer |
| Flood Zone | Zone AE (high risk) |
| APN | 020-204-030 |
| Primary APN | 020-204-030 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Building Area | 880 sqft Living Area |
| Gross Area | 1,230 sqft |
| 1st Floor Area | 880 sqft |
| Basement Area | 350 sqft |
| Family Room | Family Room |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 3,750 sqft (0.086 acres) |
| Lot Dimensions | 100 ft deep x 37 ft wide |
| Garage Type | Basement |
| Garage Area | 350 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 581 4TH AVE |
|---|---|
| City | SAN BRUNO |
| State | CA |
| Zip | 94066-4511 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOT 56 & SELY 12 FT 6 IN OF LOT 57 BLK 27 BELLE AIR PARK RSM 5/10 |
| Legal Subdivision | BELLE AIR PARK |
| Legal Block | 27 |
| Legal Lot Number | 56,57 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 3 |
| Census Block | 3017 |
| Census Tract | 604200 |
581 4th Ave is owned and occupied by two individuals who acquired it in March 2019.
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 581 4TH AVE, SAN BRUNO, CA 94066-4511 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 30, 2013 · Amount on File |
| Deed Sale | May 30, 2013 · Amount on File |
| Prior Sale | May 23, 2013 · Amount on File |
| Deed Document Number | 201380756 |
| Last Transfer Date | Mar 12, 2019 |
| Transfer Doc | 0000018603 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 18, 2019 |
| Property Address | 581 4TH AVE, SAN BRUNO, CA 94066-4511 |
| Document Number | 0000018603 |
| Instrument Date | Mar 12, 2019 |
| Instrument | 18603 |
| Transaction Type | Transfer |
| Record Updated | Apr 4, 2019 |
| Title Company | CORNERSTONE TITLE COMPANY, CORNERSTONE TITLE CO |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 581 4TH AVE SAN BRUNO CA 940664511, SAN BRUNO, CA 94066-4511 |
The 2025 property tax bill for 581 4th Ave was $8,101.
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 | $628,018 (+2%) Land $314,009 Building $314,009 | ||
| 2025 | $8,101.00 | $615,704 Land $307,852 Building $307,852 | |
| 2023 | $6,557.00 (+1.16%) | $591,798 Land $295,899 Building $295,899 | $722,700 |
| 2022 | $6,482.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 581 4th Ave in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 10.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| 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 581 4th 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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