San Mateo County property record for 312 6th Ave, San Mateo, CA 94401
| Property Type | Other |
|---|---|
| Details | 4,965 sqft · built 1917 |
| Lot Size | 0.117 acres (5,073 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,185,000 (Jul 2008) |
| Tax Bill | $18,545 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 034-193-070 |
| Primary APN | 034-193-070 |
|---|
| Stories | 1 Story |
|---|---|
| Building Area | 4,965 sqft Gross Area |
| 1st Floor Area | 4,965 sqft |
| Year Built | Built 1917 |
|---|---|
| Effective Year Built | Effective 1917 |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 5,073 sqft (0.117 acres) |
| Street Address | 312 6TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-4117 |
| Property Category | Other |
| Property Type | Other > Miscellaneous |
| Local Zoning Code | CH00C4 |
| Legal Description | LOT 7 BLOCK 7 HAYWARD ADDITION TO CITY OF SAN MATEO RSM D/61 |
| Legal Subdivision | HAYWARD ADDITION TO CITY OF SAN MATEO |
| Legal Block | 7 |
| Legal Lot Number | 7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2019 |
| Census Tract | 606300 |
312 6th Ave is held in a trust since March 2015.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 555 LAUREL AVE, 603, SAN MATEO, CA 94401-4153 |
| 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 | Jul 8, 2008 · Amount on File |
| Deed Sale | Jul 8, 2008 · Amount on File |
| Deed Document Number | 200878199 |
| Last Transfer Date | Mar 16, 2015 |
| Transfer Doc | 0000031417 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 312 6th Ave was $18,545, up 1.5% from the year before.
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 |
|---|---|---|
| 2026 | $1,556,505 (+2%) Land $1,162,458 Building $394,047 | |
| 2025 | $18,545.00 (+1.53%) | $1,525,986 Land $1,139,665 Building $386,321 |
| 2024 | $18,265.00 (+2.66%) | |
| 2023 | $17,792.00 (+1.43%) | $1,466,732 Land $1,095,411 Building $371,321 |
| 2022 | $17,542.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 312 6th Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 312 6th Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 570 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Etheric Networks Fixed Wireless · Fiber in parts of the area | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T, GeoLinks, Sonic Telecom, Unwired.
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