Marin County property record for 40 Mather Rd, San Anselmo, CA 94960
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 6,012 sqft · built 1986 |
| Lot Size | 2.52 acres (110,000 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $17,587 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 176-251-35 |
| Primary APN | 176-251-35 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Building Area | 6,012 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Contemporary |
| Lot Area | 110,000 sqft |
| Garage Area | 748 sqft |
| Parking Spaces | 3 Parking Spaces |
| Pool Area | 400 sqft |
| Deck Area | 3,294 sqft |
| Patio Area | 3,294 sqft |
| Heating System | Central |
|---|
| Street Address | 40 MATHER RD |
|---|---|
| City | SAN ANSELMO |
| State | CA |
| Zip | 94960-1047 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MAP 19 PG 20 LOT 3 |
| Legal Subdivision | SOUTHRIDGE |
| Legal Lot Number | 3 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 115000 |
40 Mather Rd is owner-occupied and held in a trust since November 1994.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 40 MATHER RD, SAN ANSELMO, CA 94960-1047 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable 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 Transfer Date | Nov 29, 1994 |
| Transfer Doc | 0000087394 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 40 Mather Rd was $17,587 with a homeowner's exemption.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| 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 | $1,395,068 (+2%) Land $310,755 Building $1,084,313 | |
| 2025 | $17,587.00 Homeowner's exemption | $1,367,718 Land $304,663 Building $1,063,055 |
| 2023 | $16,815.00 (+1.02%) Homeowner's exemption | $1,314,618 Land $292,833 Building $1,021,785 |
| 2022 | $16,646.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 40 Mather Rd in Zone X, an area of minimal flood risk, though there have been 13 flood claims nearby since 1980.
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 9 in force |
| Nearby Flood Claims | 13 (1980–2016) |
| Claims Outside the SFHA | 8 of 13 |
| Most Recent Claim | Jan 2016 · other causes |
| 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.
Wildfire risk around 40 Mather Rd is high, ranking above 75% of the US, with a 0.4% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 75% of the US · above 52% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Direct burnable vegetation |
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 88 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
5G (outdoors only) and 4G LTE
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