Marin County property record for 403 Wellesley Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,471 sqft · built 1962 |
| Lot Size | 0.172 acres (7,500 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $395,000 (Jan 1997) |
| Tax Bill | $14,670 (2025) |
| Deeds & Mortgages | Mar 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 050-067-11 |
| Primary APN | 050-067-11 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,471 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1968 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 7,500 sqft (0.172 acres) |
| Deck Area | 1,679 sqft |
| Patio Area | 1,679 sqft |
| Heating System | Central |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 403 WELLESLEY AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-3713 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BLK 1 LOT 2,3 |
| Legal Subdivision | MARIN HALF ACRE HOMES 03 |
| Legal Block | 1 |
| Legal Lot Number | 2,3 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 128100 |
Source: Marin County records, 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 Record |
|---|---|
| Mailing Address | 403 WELLESLEY AVE, MILL VALLEY, CA 94941-3713 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 9, 1997 · Amount on Record |
| Deed Sale | Jan 9, 1997 · Amount on Record |
| Prior Sale | Oct 25, 1996 · Amount on Record |
| Deed Document Number | 19971317 |
| Last Transfer Date | Feb 5, 2019 |
| Transfer Doc | 0000005972 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Mar 1, 2019 |
| Property Address | 403 WELLESLEY AVE, MILL VALLEY, CA 94941-3713 |
| Document Number | 0000005972 |
| Instrument Date | Feb 5, 2019 |
| Instrument | 5972 |
| Transaction Type | Transfer |
| Record Updated | Mar 14, 2019 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 403 WELLESLEY AVE MILL VALLEY CA 949413713, MILL VALLEY, CA 94941-3713 |
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 | $656,145 (+2%) Land $287,320 Building $368,825 | |
| 2025 | $14,670.00 (+6.22%) Homeowner's exemption | $643,281 (+4.04%) Land $281,687 Building $361,594 |
| 2023 | $13,811.00 (+2.82%) Homeowner's exemption | $618,304 Land $270,750 Building $347,554 |
| 2022 | $13,432.00 |
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 | 4 in force |
| Nearby Flood Claims | 4 (1982–1998) |
| Claims Outside the SFHA | 4 of 4 |
| Most Recent Claim | Apr 1998 · Severe Winter Storms And 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 707 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: T-Mobile, Verizon.
5G and 4G LTE (outdoors only)
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