Marin County property record for 51 Walnut Ave, Larkspur, CA 94939
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,080 sqft · built 1907 |
| Lot Size | 0.253 acres (11,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,605,000 (Dec 2003) |
| Tax Bill | $30,735 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 021-102-12 |
| Primary APN | 021-102-12 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 2,080 sqft Living Area |
| Basement Area | 256 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1907 |
|---|---|
| Effective Year Built | Effective 1984 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 11,000 sqft (0.253 acres) |
| Garage Area | 1,067 sqft |
| Parking Spaces | 4 Parking Spaces |
| Porch | Porch |
| Deck Area | 216 sqft |
| Patio Area | 216 sqft |
| Heating System | Central |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 51 WALNUT AVE |
|---|---|
| City | LARKSPUR |
| State | CA |
| Zip | 94939-1944 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Subdivision | PUNTA DE QUENTIN RHO |
| Legal Block | W |
| Legal Lot Number | 2,3 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 120002 |
51 Walnut Ave is owner-occupied and held in a trust since December 2003.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 51 WALNUT AVE, LARKSPUR, CA 94939-1944 |
| 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 | Dec 30, 2003 · Amount on File |
| Deed Sale | Dec 30, 2003 · Amount on File |
| Deed Document Number | 2003155766 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 51 Walnut Ave was $30,735 with a homeowner's exemption.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Larkspur City |
| Elementary School District | Larkspur Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $2,420,252 (+2%) Land $1,740,168 Building $680,084 | |
| 2025 | $30,735.00 Homeowner's exemption | $2,372,802 Land $1,706,052 Building $666,750 |
| 2023 | $29,087.00 (+1.05%) Homeowner's exemption | $2,280,675 Land $1,639,812 Building $640,863 |
| 2022 | $28,785.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 51 Walnut Ave in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · 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 | 3 in force |
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 51 Walnut Ave is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Aug 2023 |
| Lead | Under 1 ppb (2019–2021) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 448 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 |
May also be available: T-Mobile, Unwired.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures