Marin County property record for 91 Porteous Ave, Fairfax, CA 94930
| Property Type | Single Family Home |
|---|---|
| Details | 1 bd · 1 ba · 777 sqft · built 1919 |
| Lot Size | 0.164 acres (7,150 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $128,500 (Dec 2006) |
| Tax Bill | $11,099 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 002-082-18 |
| Primary APN | 002-082-18 |
|---|
| Bedrooms | 1 Bed |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 777 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1919 |
|---|---|
| Effective Year Built | Effective 1935 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Shingle |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 7,150 sqft (0.164 acres) |
| Garage Area | 330 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 56 sqft |
| Patio Area | 56 sqft |
| Heating System | Floor/Wall Furnace |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 91 PORTEOUS AVE |
|---|---|
| City | FAIRFAX |
| State | CA |
| Zip | 94930-2033 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MAP 2 PG 105 LOT 80 |
| Legal Subdivision | DEER PARK MAP 01 |
| Legal Lot Number | 80 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 1 |
| Census Block | 1031 |
| Census Tract | 114100 |
Source: Marin County records, as of July 13, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 91 PORTEOUS AVE, FAIRFAX, CA 94930-2033 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 12, 2006 · Amount on Record |
| Deed Sale | Dec 12, 2006 · Amount on Record |
| Prior Sale | Jun 8, 2000 · Amount on Record |
| Deed Document Number | 200676870 |
| Last Transfer Date | Apr 27, 2009 |
| Transfer Doc | 0000035842 |
| Record Updated | Oct 29, 2026 |
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 | $650,856 (+2%) Land $501,635 Building $149,221 | |
| 2025 | $11,099.00 (+8.73%) Homeowner's exemption | $638,096 (+9.17%) Land $491,801 Building $146,295 |
| 2023 | $10,208.00 (+1.47%) Homeowner's exemption | $584,487 Land $472,707 Building $111,780 |
| 2022 | $10,060.00 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AO, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 85 policies |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 85 in force |
| Nearby Flood Claims | 81 (1980–2024) |
| Claims Outside the SFHA | 18 of 81 |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 62% of the US · lower than 62% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 111 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
4G LTE (outdoors only), no 5G reported
Search by:
By searching, you agree to: Terms • Privacy • Disclosures