Marin County property record for 55 Bolsa Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,550 sqft · built 1957 |
| Lot Size | 0.237 acres (10,300 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $4,284 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 029-073-34 |
| Primary APN | 029-073-34 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Building Area | 2,550 sqft Living Area |
| Basement Area | 88 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1972 |
| Lot Area | 10,300 sqft (0.237 acres) |
| Garage Area | 325 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 756 sqft |
| Patio Area | 756 sqft |
| Heating System | Central |
|---|
| Street Address | 55 BOLSA AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-1134 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 4 |
| Census Block | 4001 |
| Census Tract | 126100 |
Source: Marin County records · APN 029-073-34
Assessment roll updated July 13, 2026 · Last verified July 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 | 55 BOLSA AVE, MILL VALLEY, CA 94941-1134 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Transfer Date | Oct 05, 2001 |
| Transfer Doc | 0000074619 |
| Record Updated | Sep 20, 2026 |
Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Mill Valley City |
| Elementary School District | Mill Valley Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $233,151 (+2%) Land $64,387 Building $168,764 | |
| 2025 | $4,284.00 (-2.15%) Homeowner's exemption | $228,581 (+4.04%) Land $63,125 Building $165,456 |
| 2023 | $4,378.00 (+12.08%) Homeowner's exemption | $219,705 Land $60,674 Building $159,031 |
| 2022 | $3,906.00 |
Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060411261004, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 5 (1982–2009) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Oct 2009 · other causes |
| Wildfire Risk | Low lower than 67% of the US · lower than 81% of California |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · sampled at 301 locations within half a mile · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: T-Mobile USA, Verizon.
5G (outdoors only) and 4G LTE
Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, March 2026 · Last verified October 2026
| Water System | MARIN MUNICIPAL WATER DISTRICT serves 188,116 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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