San Mateo County property record for 838 Prospect Row, San Mateo, CA 94401
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 6 ba · 3,800 sqft · built 1912 |
| Lot Size | 0.18 acres (7,834 sqft) |
| Owner | Company Name on File |
| Last Sale | $755,000 (May 2012) |
| Tax Bill | $19,519 (2025) |
| Deeds & Mortgages | May 2017 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 032-113-240 |
| Primary APN | 032-113-240 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 6 Baths |
| Total Rooms | 12 Rooms |
| Units | 2 Units |
| Stories | 2 Stories |
| Building Area | 3,800 sqft Living Area |
| 1st Floor Area | 1,420 sqft |
| Family Room | Family Room |
| Year Built | Built 1912 |
|---|---|
| Effective Year Built | Effective 1912 |
| Architectural Style | Duplex Single |
| Lot Area | 7,834 sqft (0.18 acres) |
| Lot Dimensions | 158 ft deep x 50 ft wide |
| Garage Type | Detached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 838 PROSPECT ROW |
|---|---|
| City | SAN MATEO |
| State | CA |
| Zip | 94401-2211 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | RM0000 |
| Legal Description | LOT 23 BLOCK 7 CENTRAL ADDITION TO SAN MATEO RSM A/54 CITY OF SAN MATEO |
| Legal Subdivision | CENTRAL ADDITION TO SAN MATEO |
| Legal Block | 7 |
| Legal Lot Number | 23 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 605901 |
838 Prospect Row, a duplex, is owned by a company that acquired it in May 2017.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 236 W 3RD AVE, SAN MATEO, CA 94402-1524 |
| Owner Type | Company |
| Vesting | Company |
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 | Name on Deed |
|---|---|
| Last Sale | May 14, 2012 · Amount on File |
| Deed Sale | May 14, 2012 · Amount on File |
| Prior Sale | May 18, 2001 · Amount on File |
| Deed Document Number | 201267544 |
| Last Transfer Date | May 15, 2017 |
| Transfer Doc | 0000042361 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | May 16, 2017 |
| Property Address | 838 PROSPECT ROW, SAN MATEO, CA 94401-2211 |
| Document Number | 0000042361 |
| Map Reference | PM81 PG20&21 |
| Instrument Date | May 15, 2017 |
| Instrument | 2017-042361 |
| Transaction Type | Transfer |
| Record Updated | Aug 9, 2021 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 838&840 PROSPECT ROW, 840, SAN MATEO, CA 94401-2211 |
| Document Number | 0000042362 |
|---|---|
| Date | May 16, 2017 |
| Instrument | 2017-042362 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 4% |
| Type Change Date | Jun 1, 2024 |
| Change Frequency | Monthly |
| Index | 1-Month LIBOR |
| Max Rate | 9.95% |
The 2025 property tax bill for 838 Prospect Row was $19,519.
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 | $1,412,407 (+2%) Land $483,639 Building $928,768 | |
| 2025 | $19,519.00 | $1,384,713 Land $474,156 Building $910,557 |
| 2023 | $18,631.00 (+0.06%) | $1,330,946 Land $455,745 Building $875,201 |
| 2022 | $18,619.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 838 Prospect Row 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 838 Prospect Row 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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