Marin County property record for 143 Sycamore Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,933 sqft · built 1927 |
| Lot Size | 0.124 acres (5,400 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $485,000 (Mar 1995) |
| Tax Bill | $12,368 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 028-224-10 |
| Primary APN | 028-224-10 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,933 sqft Living Area |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1959 |
| Architectural Style | Contemporary |
| Lot Area | 5,400 sqft (0.124 acres) |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 143 SYCAMORE AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-2807 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 96 |
| Legal Subdivision | TAMALPAIS PARK |
| Legal Lot Number | 96 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 3 |
| Census Block | 3006 |
| Census Tract | 126100 |
143 Sycamore Ave is owner-occupied and held in a trust since September 2008.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 143 SYCAMORE AVE, MILL VALLEY, CA 94941-2807 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 3, 1995 · Amount on File |
| Deed Sale | Mar 3, 1995 · Amount on File |
| Deed Document Number | 199510302 |
| Last Transfer Date | Sep 17, 2008 |
| Transfer Doc | 0000047277 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 143 Sycamore Ave was $12,368 with a homeowner's exemption.
Source: Marin County assessment roll, as of July 13, 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) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $918,093 (+2%) Land $485,675 Building $432,418 | |
| 2025 | $12,368.00 Homeowner's exemption | $900,092 Land $476,152 Building $423,940 |
| 2023 | $11,958.00 (+3.34%) Homeowner's exemption | $865,146 Land $457,665 Building $407,481 |
| 2022 | $11,571.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 143 Sycamore Ave in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on File median of 61 individual policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 69 units insured incl. 8 condo units |
| Nearby Flood Claims | 43 (1979–2024) |
| Claims Outside the SFHA | 6 of 43 |
| Most Recent Claim | Dec 2024 · river or lake 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 143 Sycamore Ave is low, with a 0.01% 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 | 0.01% 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 825 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures