Marin County property record for 251 Richardson Dr, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 3,110 sqft · built 1955 |
| Lot Size | 0.234 acres (10,200 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $427,000 (Jun 1995) |
| Tax Bill | $17,915 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 043-232-16 |
| Primary APN | 043-232-16 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Building Area | 3,110 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Contemporary |
| Lot Area | 10,200 sqft (0.234 acres) |
| Garage Area | 461 sqft |
| Parking Spaces | 2 Parking Spaces |
| Pool Area | 480 sqft |
| Deck Area | 556 sqft |
| Patio Area | 556 sqft |
| Heating System | Central |
|---|
| Street Address | 251 RICHARDSON DR |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-2518 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 720 |
| Legal Subdivision | STRAWBERRY MANOR 07 |
| Legal Lot Number | 720 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 125000 |
251 Richardson Dr is owned by a company that bought it in June 1995 and is owner-occupied.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 251 RICHARDSON DR, MILL VALLEY, CA 94941-2518 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Borrower in Default |
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 Sale | Jun 9, 1995 · Amount on File |
| Deed Sale | Jun 9, 1995 · Amount on File |
| Deed Document Number | 199526397 |
| Prior Transfer Date | Dec 15, 1994 |
| Prior Transfer Doc | 0000087626 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 251 Richardson Dr was $17,915 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 | Mill Valley Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,297,319 (+2%) Land $421,086 Building $876,233 | |
| 2025 | $17,915.00 Homeowner's exemption | $1,271,884 Land $412,830 Building $859,054 |
| 2023 | $16,993.00 (+3.5%) Homeowner's exemption | $1,222,501 Land $396,801 Building $825,700 |
| 2022 | $16,419.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 251 Richardson Dr in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
| 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.
The area around 251 Richardson Dr has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land 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 459 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 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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