San Mateo County property record for 843 Walnut Ave, Burlingame, CA 94010
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,570 sqft · built 1922 |
| Lot Size | 0.135 acres (5,885 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,750,000 (Feb 2001) |
| Tax Bill | $30,289 (2025) |
| Deeds & Mortgages | Dec 2020 Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 028-133-070 |
| Primary APN | 028-133-070 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,570 sqft Living Area |
| 1st Floor Area | 1,370 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 1922 |
| Architectural Style | Tudor |
| Exterior Material | Stucco |
| Roof Material | Composition Shingle |
| Lot Area | 5,885 sqft (0.135 acres) |
| Lot Dimensions | 125 ft deep x 40 ft wide |
| Garage Area | 290 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 843 WALNUT AVE |
|---|---|
| City | BURLINGAME |
| State | CA |
| Zip | 94010-5009 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10006 |
| Legal Description | 49 FT OF LOT 26 BLOCK 3 BURLINGAME PARK NO 4 RSM D/43 |
| Legal Subdivision | BURLINGAME PARK NO 4 |
| Legal Block | 3 |
| Legal Lot Number | 26 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SOUTH SAN FRANCISCO |
| Census Block Group | 2 |
| Census Block | 2013 |
| Census Tract | 605300 |
843 Walnut Ave is owner-occupied and held in a trust since November 2005.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 843 WALNUT AVE, BURLINGAME, CA 94010-5009 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 | Feb 22, 2001 · Amount on File |
| Deed Sale | Feb 22, 2001 · Amount on File |
| Prior Sale | Jan 25, 2000 · Amount on File |
| Deed Document Number | 200121956 |
| Last Transfer Date | Nov 16, 2005 |
| Transfer Doc | 0000212175 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Property Address | 843 WALNUT AVE, BURLINGAME, CA 94010-5009 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | NORTH AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 843 WALNUT AVE, BURLINGAME, CA 94010-5009 |
| Document Number | 0000153932 |
|---|---|
| Date | Dec 30, 2020 |
| Instrument | 2020-153932 |
| Name | PARKSIDE LENDING LLC |
|---|---|
| Type | Lending Institution |
| Address | SAN FRANCISCO, CA 94102 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jan 1, 2051 |
The 2025 property tax bill for 843 Walnut Ave was $30,289 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 | Burlingame City |
| Elementary School District | Burlingame 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 | $2,689,710 (+2%) Land $1,344,855 Building $1,344,855 | ||
| 2025 | $30,289.00 Homeowner's exemption | $2,636,972 Land $1,318,486 Building $1,318,486 | |
| 2023 | $28,939.00 (+2.53%) Homeowner's exemption | $2,534,578 Land $1,267,289 Building $1,267,289 | $2,905,020 |
| 2022 | $28,225.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 843 Walnut Ave in Zone X, an area of moderate flood risk, though there have been 5 flood claims nearby since 1997.
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 11 individual policies |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 32 units insured incl. 21 condo units |
| Nearby Flood Claims | 5 (1997–2021) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Oct 2021 · 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.
The area around 843 Walnut Ave 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 | CITY OF BURLINGAME serves 32,453 people · EPA ID CA4110003 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Nov 2024 |
| Lead | 6 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 887 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Sonic Telecom Fiber | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, GeoLinks.
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