San Mateo County property record for 770 27th Ave, San Mateo, CA 94403
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 4,193 sqft · built 2007 |
| Lot Size | 0.63 acres (27,459 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,650,000 (Apr 2014) |
| Tax Bill | $38,491 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 039-251-200 |
| Primary APN | 039-251-200 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 1 Story |
| Building Area | 4,193 sqft Living Area |
| 1st Floor Area | 3,047 sqft |
| Basement Area | 1,146 sqft |
| Finished Basement | 1,146 sqft |
| Family Room | Family Room |
| Year Built | Built 2007 |
|---|---|
| Effective Year Built | Effective 2007 |
| Lot Area | 27,459 sqft (0.63 acres) |
| Lot Dimensions | 6,784 ft deep x 6,784 ft wide |
| Garage Area | 689 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | None |
|---|---|
| Heating System | Central |
| Street Address | 770 27TH AVE |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94403-2637 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10000 |
| Legal Description | LOT 1 PARCEL MAP VOL 59/87 & ADJ PTN LOT 7 BLK 2 MASON TR RSM 18/42 |
| Legal Subdivision | MASON TR |
| Legal Block | 2 |
| Legal Lot Number | 1,7 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 606700 |
770 27th Ave is owned and occupied by two individuals who bought it in April 2014.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 770 27TH AVE, SAN MATEO, CA 94403-2637 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 | Apr 11, 2014 · Amount on File |
| Deed Sale | Apr 11, 2014 · Amount on File |
| Prior Sale | Feb 2, 2006 · Amount on File |
| Deed Document Number | 201430479 |
| Prior Transfer Date | Oct 25, 2002 |
| Prior Transfer Doc | 0000226722 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 770 27th Ave was $38,491 with a homeowner's exemption.
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 | Assessed Market Value |
|---|---|---|---|
| 2026 | $3,313,496 (+2%) Land $1,656,748 Building $1,656,748 | ||
| 2025 | $38,491.00 Homeowner's exemption | $3,248,526 Land $1,624,263 Building $1,624,263 | |
| 2023 | $37,747.00 (+2.08%) Homeowner's exemption | $3,122,384 Land $1,561,192 Building $1,561,192 | $3,020,940 |
| 2022 | $36,979.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 770 27th Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1979.
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 |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1979) |
| Most Recent Claim | Apr 1979 · rainfall accumulation |
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.
Wildfire risk around 770 27th 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 99.1% of the US · lower than 99.2% 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 165 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
May also be available: Etheric Networks, GeoLinks, Sonic Telecom, T-Mobile.
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