Marin County property record for 21 Berkeley Ave, San Anselmo, CA 94960 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,255 sqft · built 1939 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $4,105 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 005-112-09 |
| Primary APN | 005-112-09 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,255 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1939 |
|---|---|
| Effective Year Built | Effective 1944 |
| Architectural Style | Contemporary |
| Exterior Material | Asbestos |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 6,500 sqft (0.149 acres) |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 21 BERKELEY AVE |
|---|---|
| City | SAN ANSELMO |
| State | CA |
| Zip | 94960-1405 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 115000 |
Source: Marin County records · APN 005-112-09
Assessment roll updated July 13, 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 | 21 BERKELEY AVE, SAN ANSELMO, CA 94960-1405 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Dec 30, 1999 |
| Transfer Doc | 0000007285 |
| Record Updated | Sep 20, 2026 |
Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | San Anselmo Town |
| Elementary School District | Ross Valley Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $194,407 (+2%) Land $65,686 Building $128,721 | |
| 2025 | $4,105.00 (+4.56%) Homeowner's exemption | $190,595 (+4.04%) Land $64,398 Building $126,197 |
| 2023 | $3,926.00 (+2.24%) Homeowner's exemption | $183,196 Land $61,898 Building $121,298 |
| 2022 | $3,840.00 |
Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060411150004, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Flood Insurance Cost | Premium on Record median of 75 individual NFIP policies nearby |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 75 in force |
| Nearby Flood Claims | 54 (1982–2022) |
| Claims Outside the SFHA | 12 of 54 |
| Most Recent Claim | Aug 2022, other causes |
| Claims By Storm |
|
| Wildfire Risk | Low above 34% of the US · above 20% of California |
|---|---|
| Wildfire Likelihood | About 1 in 2,778 per year |
| Exposure | Direct burnable vegetation at the parcel |
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, availability as of December 31, 2025 · Published October 2026 · based on 472 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: T-Mobile USA, Unwired. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G (outdoors only) and 4G LTE
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