San Mateo County property record for 812 Jefferson Ct, San Mateo, CA 94401
| Property Type | Quadplex |
|---|---|
| Details | 4 bd · 4 ba · 2,450 sqft · built 1922 |
| Lot Size | 0.188 acres (8,182 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,670,000 (Jul 2015) |
| Tax Bill | $28,853 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 032-115-170 |
| Primary APN | 032-115-170 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 11 Rooms |
| Units | 4 Units |
| Stories | 1 Story |
| Building Area | 2,450 sqft Living Area |
| 1st Floor Area | 2,450 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 1922 |
| Architectural Style | Quadruplex |
| Lot Area | 8,182 sqft (0.188 acres) |
| Lot Dimensions | 163 ft deep x 51 ft wide |
| Garage Type | Detached |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 812 JEFFERSON CT |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-5228 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Quadplex |
| Legal Description | LOT 26 BLOCK 5 CENTRAL ADDITION TO SAN MATEO RSM A/54 CITY OF SAN MATEO |
| Legal Subdivision | CENTRAL ADDITION TO SAN MATEO |
| Legal Block | 5 |
| Legal Lot Number | 26 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 605901 |
812 Jefferson Ct, a quadplex, is owned by two individuals who bought it in July 2015.
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 | 4304 BERESFORD ST, SAN MATEO, CA 94403-5122 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 16, 2015 · Amount on File |
| Deed Sale | Jul 16, 2015 · Amount on File |
| Prior Sale | Oct 14, 2005 · Amount on File |
| Deed Document Number | 201575015 |
| Prior Transfer Date | Jun 18, 2015 |
| Prior Transfer Doc | 0000063576 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 812 Jefferson Ct was $28,853.
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 | $1,860,000 (+3.91%) Land $1,114,000 Building $746,000 | |
| 2025 | $28,853.00 | $1,790,000 Land $1,072,000 Building $718,000 |
| 2023 | $27,863.00 (+7.65%) | $1,780,000 Land $1,065,869 Building $714,131 |
| 2022 | $25,884.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 812 Jefferson Ct 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.
The area around 812 Jefferson Ct 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 713 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 |
| Astound Broadband Cable | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Verizon.
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