San Mateo County property record for 535 Walnut St, San Carlos, CA 94070
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 1,850 sqft · built 1991 |
| Lot Size | 0.178 acres (7,750 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $11,668 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 050-072-200 |
| Primary APN | 050-072-200 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,850 sqft Living Area |
| 1st Floor Area | 1,290 sqft |
| Basement Area | 480 sqft |
| Year Built | Built 1991 |
|---|---|
| Effective Year Built | Effective 1991 |
| Architectural Style | Multi-Family |
| Lot Area | 7,750 sqft (0.178 acres) |
| Lot Dimensions | 155 ft deep x 50 ft wide |
| Garage Type | Carport |
| Garage Area | 250 sqft |
| Carport | Carport |
| Carport Area | 250 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 535 WALNUT ST |
|---|---|
| City | SAN CARLOS |
| State | CA |
| Zip | 94070-2370 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RM0000 |
| Legal Description | LOT 9 A BLOCK 18 AMEND MAP TOWN OF SAN CARLOS |
| Legal Subdivision | TOWN OF SAN CARLOS |
| Legal Block | 18 |
| Legal Lot Number | 9 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 609202 |
535 Walnut St is held in a trust since December 2012.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 1180 SAN CARLOS AVE, SAN CARLOS, CA 94070-2418 |
| 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 Transfer Date | Dec 12, 2012 |
| Transfer Doc | 0000051752 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 535 Walnut St was $11,668.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | San Carlos City |
| Elementary School District | San Carlos Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $797,355 (+2%) Land $497,895 Building $299,460 | |
| 2025 | $11,668.00 | $781,722 Land $488,133 Building $293,589 |
| 2023 | $11,125.00 (+1.96%) | $751,371 Land $469,180 Building $282,191 |
| 2022 | $10,911.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 535 Walnut St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2023.
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 |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 15 units insured incl. 15 condo units |
| Nearby Flood Claims | 1 (2023) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 535 Walnut St 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 CARLOS private · serves 34,801 people · EPA ID CA4110007 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Sep 2024 |
| Lead | 6 ppb (2022–2024) 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 659 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 · Fiber in parts of the area | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, Sonic Telecom, T-Mobile.
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