Marin County property record for 31 Willow Ave, Fairfax, CA 94930
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 3 ba · 1,408 sqft · built 1958 |
| Lot Size | 0.129 acres (5,600 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $11,692 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 001-236-45 |
| Primary APN | 001-236-45 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3 Baths |
| Units | 2 Units |
| Building Area | 1,408 sqft Living Area |
| Basement Area | 242 sqft |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Duplex Single |
| Lot Area | 5,600 sqft (0.129 acres) |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 550 sqft |
| Patio Area | 550 sqft |
| Heating System | Floor/Wall Furnace |
|---|
| Street Address | 31 WILLOW AVE |
|---|---|
| City | FAIRFAX |
| State | CA |
| Zip | 94930-1217 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | MAP 2 PG 80 LOT 201 |
| Legal Subdivision | RIDGEWAY PARK |
| Legal Lot Number | 201 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 114200 |
31 Willow Ave, a duplex, is owned by two individuals who acquired it in November 2008.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 8 FAIRWOOD CT, SAN RAFAEL, CA 94901-1426 |
| Owner Type | Individual |
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 20, 2008 |
| Transfer Doc | 0000052987 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 31 Willow Ave was $11,692.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Fairfax 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 | $572,369 (+2%) Land $263,641 Building $308,728 | |
| 2025 | $11,692.00 | $561,148 Land $258,472 Building $302,676 |
| 2023 | $11,103.00 (+1.91%) | $539,359 Land $248,436 Building $290,923 |
| 2022 | $10,895.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 31 Willow Ave in Zone X, an area of minimal flood risk, though there have been 8 flood claims nearby since 1993.
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 9 (5% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 8 (1993–2024) |
| Claims Outside the SFHA | 8 of 8 |
| Most Recent Claim | Feb 2024 · rainfall accumulation |
| 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 31 Willow Ave is low, with a 0.02% annual chance of wildfire.
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 | 0.02% 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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