San Mateo County property record for 3234 Upper Lock Ave, Belmont, CA 94002
| Property Type | Single Family Home |
|---|---|
| Details | 210 bd · 6 ba · 1,990 sqft · built 1957 |
| Lot Size | 0.811 acres (35,315 sqft) |
| Owner | Individual Name on File |
| Last Sale | $395,000 (Aug 2021) |
| Tax Bill | $25,343 (2025) |
| Deeds & Mortgages | Aug 2021 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 043-203-060 |
| Primary APN | 043-203-060 |
|---|
| Bedrooms | 210 Beds |
|---|---|
| Full Baths | 6 Baths |
| Half Baths | 4 Half Baths |
| Total Rooms | 353 Rooms |
| Building Area | 1,990 sqft Living Area |
| 1st Floor Area | 1,990 sqft |
| Family Room | Family Room |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Lot Area | 35,315 sqft (0.811 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 3234 UPPER LOCK AVE |
|---|---|
| City | BELMONT |
| State | CA |
| Zip | 94002-1317 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | LOTS 50 51 52 53 BLOCK 119 BELMONT CO CLUB PROP 10 |
| Legal Subdivision | BELMONT CO CLUB PROP 10 |
| Legal Block | 119 |
| Legal Lot Number | 50 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 5 |
| Census Block | 5017 |
| Census Tract | 608800 |
3234 Upper Lock Ave is owned and occupied by an individual who bought it in August 2021.
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 | Individual Name on File |
|---|---|
| Mailing Address | 3234 UPPER LOCK AVE, BELMONT, CA 94002-1317 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 19, 2021 · Amount on File |
| Deed Sale | Aug 19, 2021 · Amount on File |
| Prior Sale | Mar 26, 2015 · Amount on File |
| Deed Document Number | 2021121554 |
| Prior Transfer Date | Feb 11, 1994 |
| Prior Transfer Doc | 0000031695 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Aug 19, 2021 |
| Property Address | 3234 UPPER LOCK AVE, BELMONT, CA 94002-1317 |
| Document Number | 0000121554 |
| Map Reference | MB 15 PG 29-38 |
| Instrument Date | Aug 10, 2021 |
| Instrument | 2021-121554 |
| Transaction Type | Transfer |
| Record Updated | Jul 25, 2022 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $434.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3234 UPPER LOCK AVE, BELMONT, CA 94002-1317 |
The 2025 property tax bill for 3234 Upper Lock Ave was $25,343 with a homeowner's exemption.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Belmont City |
| County | San Mateo County |
| Elementary School District | Belmont-Redwood Shores Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,151,617 (+2%) Land $1,635,835 Building $515,782 | ||
| 2025 | $25,343.00 Homeowner's exemption | $2,109,430 Land $1,603,761 Building $505,669 | |
| 2023 | $24,052.00 (+3.95%) Homeowner's exemption | $2,027,521 Land $1,541,487 Building $486,034 | $1,958,670 |
| 2022 | $23,137.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3234 Upper Lock Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1980.
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 Claims | 1 (1980) |
| Most Recent Claim | Jan 1980 · tidal / storm surge |
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 3234 Upper Lock 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 | MID-PENINSULA WATER DISTRICT serves 31,059 people · EPA ID CA4110001 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Feb 2025 |
| Lead | Under 1 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 434 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: Etheric Networks, T-Mobile, Verizon.
5G (outdoors only) and 4G LTE
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