Marin County property record for 510 Richardson St, Sausalito, CA 94965
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,015 sqft · built 1925 |
| Lot Size | 0.068 acres (2,975 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,428,000 (Apr 2013) |
| Tax Bill | $23,209 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 065-233-38 |
| Primary APN | 065-233-38 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 2,015 sqft Living Area |
| Basement Area | 815 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Contemporary |
| Lot Area | 2,975 sqft (0.068 acres) |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 30 sqft |
| Patio Area | 60 sqft |
| Heating System | Central |
|---|
| Street Address | 510 RICHARDSON ST |
|---|---|
| City | SAUSALITO |
| State | CA |
| Zip | 94965-2428 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BLK 16 LOT 11-13 |
| Legal Subdivision | PROPERTY/SAUSALITO BAY LAND CO |
| Legal Block | 16 |
| Legal Lot Number | 11-13 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 130201 |
510 Richardson St is owner-occupied and held in a trust since April 2013.
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 | 2 Trust Names on File |
|---|---|
| Mailing Address | 775 E BLITHEDALE AVE, MILL VALLEY, CA 94941-1554 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 1, 2013 · Amount on File |
| Deed Sale | Apr 1, 2013 · Amount on File |
| Prior Sale | Jul 14, 2006 · Amount on File |
| Deed Document Number | 201322594 |
| Prior Transfer Date | Dec 9, 1993 |
| Prior Transfer Doc | 0000108521 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 510 Richardson St was $23,209 with a homeowner's exemption.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Sausalito City |
| Elementary School District | Sausalito Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,793,568 (+2%) Land $1,023,640 Building $769,928 | |
| 2025 | $23,209.00 Homeowner's exemption | $1,758,409 Land $1,003,574 Building $754,835 |
| 2023 | $21,671.00 (+3.86%) Homeowner's exemption | $1,690,137 Land $964,609 Building $725,528 |
| 2022 | $20,865.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 510 Richardson St in Zone X, an area of minimal flood risk, though there have been 10 flood claims nearby since 1982.
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 | 9 in force |
| Nearby Flood Claims | 10 (1982–1998) |
| Claims Outside the SFHA | 10 of 10 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
| 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 510 Richardson St is low, with a 0.03% 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 | 0.03% 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 616 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile.
5G (outdoors only) and 4G LTE
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