Marin County property record for 320 Richardson Dr, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,645 sqft · built 1953 |
| Lot Size | 0.231 acres (10,080 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $11,421 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 043-224-11 |
| Primary APN | 043-224-11 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,645 sqft Living Area |
| Basement Area | 240 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1953 |
|---|---|
| Effective Year Built | Effective 1967 |
| Architectural Style | Contemporary |
| Lot Area | 10,080 sqft (0.231 acres) |
| Garage Area | 380 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 604 sqft |
| Patio Area | 604 sqft |
| Heating System | Central |
|---|
| Street Address | 320 RICHARDSON DR |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-2520 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 622 |
| Legal Subdivision | STRAWBERRY MANOR 06 |
| Legal Lot Number | 622 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 125000 |
Source: Marin County assessment roll, 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 Company Names on File |
|---|---|
| Mailing Address | 320 RICHARDSON DR, MILL VALLEY, CA 94941-2520 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Apr 23, 2004 |
| Transfer Doc | 0000036286 |
| 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 | $721,425 (+2%) Land $371,322 Building $350,103 | |
| 2025 | $11,421.00 (+5.62%) Homeowner's exemption | $707,279 (+4.04%) Land $364,041 Building $343,238 |
| 2023 | $10,813.00 (+3.38%) Homeowner's exemption | $679,817 Land $349,906 Building $329,911 |
| 2022 | $10,459.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 2 (1982–1986) |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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 95% of the US · lower than 97% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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 199 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 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: AT&T, Etheric Communications, LLC..
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