Marin County property record for 366 Richardson Way, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,458 sqft · built 1955 |
| Lot Size | 0.29 acres (12,636 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $7,412 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 049-154-19 |
| Primary APN | 049-154-19 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Building Area | 2,458 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1963 |
| Lot Area | 12,636 sqft (0.29 acres) |
| Garage Area | 276 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 382 sqft |
| Patio Area | 382 sqft |
| Heating System | Central |
|---|
| Street Address | 366 RICHARDSON WAY |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-4052 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | TAMALPAIS VLY |
| Legal Block | A |
| Legal Lot Number | 14B |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 128100 |
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 | 366 RICHARDSON WAY, MILL VALLEY, CA 94941-4052 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Elementary School District | Mill Valley Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $360,930 (+2%) Land $129,905 Building $231,025 | |
| 2025 | $7,412.00 (+3.96%) Homeowner's exemption | $353,855 (+4.04%) Land $127,359 Building $226,496 |
| 2023 | $7,130.00 (+12.44%) Homeowner's exemption | $340,115 Land $122,414 Building $217,701 |
| 2022 | $6,341.00 |
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 AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 88 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 88 in force |
| Nearby Flood Claims | 120 (1978–2026) |
| Claims Outside the SFHA | 13 of 120 |
| Most Recent Claim | Jan 2026 · 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 51% of the US · lower than 69% of California |
|---|---|
| Wildfire Likelihood | 0.1% 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 436 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Unwired, Verizon.
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