Marin County property record for 415 Wellesley Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,905 sqft · built 1996 |
| Lot Size | 0.381 acres (16,600 sqft) |
| Owner | Company Name on Record |
| Last Sale | $725,000 (May 1997) |
| Tax Bill | $18,281 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 050-083-23 |
| Primary APN | 050-083-23 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 2,905 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1996 |
|---|---|
| Effective Year Built | Effective 1998 |
| Architectural Style | Contemporary |
| Lot Area | 16,600 sqft (0.381 acres) |
| Garage Area | 678 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 812 sqft |
| Patio Area | 812 sqft |
| Heating System | Central |
|---|
| Street Address | 415 WELLESLEY AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-3713 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | MARIN HALF ACRE HOMES 03 |
| Legal Block | 1 |
| Legal Lot Number | 14 |
| 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 | Company Name on Record |
|---|---|
| Mailing Address | 415 WELLESLEY AVE, MILL VALLEY, CA 94941-3713 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 8, 1997 · Amount on Record |
| Deed Sale | May 8, 1997 · Amount on Record |
| Deed Document Number | 199724132 |
| Last Transfer Date | Jun 11, 2010 |
| Transfer Doc | 0000035665 |
| Record Updated | Oct 29, 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 | $1,204,318 (+2%) Land $415,282 Building $789,036 | |
| 2025 | $18,281.00 (+5.96%) Homeowner's exemption | $1,180,706 (+4.04%) Land $407,140 Building $773,566 |
| 2023 | $17,253.00 (+3.25%) Homeowner's exemption | $1,134,863 Land $391,332 Building $743,531 |
| 2022 | $16,710.00 |
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 | 0.02% 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 496 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: T-Mobile, Unwired, Verizon.
5G and 4G LTE (outdoors only)
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