Marin County property record for 21 Sierra Ave, San Anselmo, CA 94960
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,376 sqft · built 1916 |
| Lot Size | 0.125 acres (5,460 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $585,000 (Nov 2012) |
| Tax Bill | $12,134 (2025) |
| Deeds & Mortgages | Apr 2023 Transfer Jun 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 005-194-28 |
| Primary APN | 005-194-28 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Building Area | 1,376 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1916 |
|---|---|
| Effective Year Built | Effective 1945 |
| Architectural Style | Contemporary |
| Lot Area | 5,460 sqft (0.125 acres) |
| Garage Area | 392 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 24 sqft |
| Patio Area | 24 sqft |
| Heating System | Central |
|---|
| Street Address | 21 SIERRA AVE |
|---|---|
| City | SAN ANSELMO |
| State | CA |
| Zip | 94960-1821 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Subdivision | GRAND VIEW |
| Legal Lot Number | 11,12 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 116000 |
Source: Marin County records, as of July 13, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 21 SIERRA AVE, SAN ANSELMO, CA 94960-1821 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Apr 19, 2023 | Intrafamily Transfer, Transfer |
| Jun 15, 2021 | Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 6, 2012 · Amount on Record |
| Deed Sale | Nov 6, 2012 · Amount on Record |
| Deed Document Number | 201269657 |
| Last Transfer Date | Apr 13, 2023 |
| Transfer Doc | 0000009724 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Apr 19, 2023 |
| Property Address | 21 SIERRA AVE, SAN ANSELMO, CA 94960-1821 |
| Document Number | 0000009724 |
| Map Reference | MB 2 PG 88 |
| Instrument Date | Apr 13, 2023 |
| Instrument | 2023-0009724 |
| Transaction Type | Transfer |
| Record Updated | May 3, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21 SIERRA AVE, SAN ANSELMO, CA 94960-1821 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 21 SIERRA AVE, SAN ANSELMO, CA 94960-1821 |
| Transaction Type | Mortgage |
| Record Updated | Jul 7, 2021 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 21 SIERRA AVE, SAN ANSELMO, CA 94960-1821 |
| Document Number | 0000039244 |
|---|---|
| Date | Jun 15, 2021 |
| Instrument | 2021-0039244 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Mortgage Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 241 Months |
| Due | Jul 1, 2041 |
Source: Marin County assessment roll, as of July 13, 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $834,760 (+8.36%) Land $483,560 Building $351,200 | |
| 2025 | $12,134.00 (+9.7%) Homeowner's exemption | $770,357 (+11.26%) Land $474,081 Building $296,276 |
| 2023 | $11,061.00 (+1.36%) Homeowner's exemption | $692,388 Land $455,674 Building $236,714 |
| 2022 | $10,913.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 76 individual policies |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 104 units insured incl. 28 condo units |
| Nearby Flood Claims | 52 (1978–2023) |
| Claims Outside the SFHA | 18 of 52 |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect 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 | 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 810 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Unwired.
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