San Mateo County property record for 3216 Upper Lock Ave, Belmont, CA 94002
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,840 sqft · built 1979 |
| Lot Size | 0.147 acres (6,388 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,780,000 (Nov 2016) |
| Tax Bill | $25,507 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 043-211-260 |
| Primary APN | 043-211-260 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,840 sqft Living Area |
| Gross Area | 3,490 sqft |
| 1st Floor Area | 1,520 sqft |
| 2nd Floor Area | 1,220 sqft |
| Basement Area | 650 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 6,388 sqft (0.147 acres) |
| Lot Dimensions | 127 ft deep x 50 ft wide |
| Garage Type | Basement |
| Garage Area | 650 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3216 UPPER LOCK AVE |
|---|---|
| City | BELMONT |
| State | CA |
| Zip | 94002-1317 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1000B |
| Legal Description | LOT 44 BLK 119 BELMONT COUNTRY CLUB PROPERTIES SUB NO 10 RSM 15/29 |
| Legal Subdivision | BELMONT COUNTRY CLUB PROP |
| Legal Block | 119 |
| Legal Lot Number | 44 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 5 |
| Census Block | 5017 |
| Census Tract | 608800 |
Source: San Mateo County records · APN 043-211-260
Assessment roll updated July 15, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 3216 UPPER LOCK AVE, BELMONT, CA 94002-1317 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 02, 2016 · Amount on Record |
| Deed Sale | Nov 02, 2016 · Amount on Record |
| Prior Sale | May 31, 2012 · Amount on Record |
| Deed Document Number | 2016114699 |
| Record Updated | Sep 20, 2026 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 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) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $2,107,155 (+2%) Land $1,183,795 Building $923,360 | ||
| 2025 | $25,507.00 (+4.73%) Homeowner's exemption | $2,065,839 (+4.04%) Land $1,160,584 Building $905,255 | |
| 2023 | $24,356.00 (+3.96%) Homeowner's exemption | $1,985,621 Land $1,115,518 Building $870,103 | $2,354,850 |
| 2022 | $23,428.00 |
Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), as of September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816088005, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 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 |
| 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 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.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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 Communications, LLC., T-Mobile USA, Verizon.
Based on FCC filings for 434 locations within half a mile of this property.
5G (outdoors only) and 4G LTE
Source: EPA Safe Drinking Water Information System, water system CA4110001, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | MID-PENINSULA WATER DISTRICT serves 31,059 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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