Marin County property record for 15 Sidney St, Mill Valley, CA 94941 · Last verified July 2026
| Property Type | Duplex |
|---|---|
| Details | 6 bd · 2 ba · 2,670 sqft · built 1925 |
| Lot Size | 0.155 acres (6,787 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $8,458 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 029-211-04 |
| Primary APN | 029-211-04 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 2 Baths |
| Units | 2 Units |
| Building Area | 2,670 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1925 |
|---|---|
| Effective Year Built | Effective 1925 |
| Architectural Style | Duplex Single |
| Lot Area | 6,787 sqft (0.155 acres) |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Floor/Wall Furnace |
|---|
| Street Address | 15 SIDNEY ST |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-1337 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Subdivision | MILL VALLEY |
| Legal Lot Number | 7,8 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 126100 |
Source: Marin County records · APN 029-211-04
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 Individual Names on File |
|---|---|
| Mailing Address | PO BOX 723, MILL VALLEY, CA 94942-0723 |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| 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 | $265,855 (+2%) Land $112,556 Building $153,299 | |
| 2025 | $8,458.00 (+7.06%) | $260,642 (+4.04%) Land $110,349 Building $150,293 |
| 2023 | $7,900.00 (-4.08%) | $250,523 Land $106,065 Building $144,458 |
| 2022 | $8,236.00 |
Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Wildfire Risk | Low above 20% of the US · above 11% of California |
|---|---|
| Wildfire Likelihood | About 1 in 8,333 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures