Marin County property record for 18140 Hwy 1, Marshall, CA 94940
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,534 sqft · built 1961 |
| Lot Size | 0.75 acres (32,670 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,250,000 (Aug 2019) |
| Tax Bill | $16,804 (2025) |
| Deeds & Mortgages | Aug 2019 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 106-302-02 |
| Primary APN | 106-302-02 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,534 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Contemporary |
| Lot Area | 32,670 sqft (0.75 acres) |
| Deck Area | 386 sqft |
| Patio Area | 750 sqft |
| Heating System | Central |
|---|---|
| Heating Fuel | Electric |
| Street Address | 18140 HIGHWAY 1 |
|---|---|
| City | MARSHALL |
| State | CA |
| Zip | 94940 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | MARIN CA |
| Township / Civil Division | NORTHWEST MARIN |
| Census Block Group | 1 |
| Census Block | 1049 |
| Census Tract | 133000 |
18140 Hwy 1 is owned by two individuals who bought it in August 2019.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 350 CHURCH ST, SONOMA, CA 95476-6513 |
| Owner Type | Individual |
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 | Aug 12, 2019 · Amount on File |
| Deed Sale | Aug 12, 2019 · Amount on File |
| Prior Sale | Apr 9, 2009 · Amount on File |
| Deed Document Number | 201928607 |
| Prior Transfer Date | Dec 1, 2008 |
| Prior Transfer Doc | 0000053753 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Aug 12, 2019 |
| Property Address | 18140 HIGHWAY 1, MARSHALL, CA 94940 |
| Document Number | 0000028607 |
| Instrument Date | Aug 9, 2019 |
| Instrument | 2019-0028607 |
| Transaction Type | Transfer |
| Record Updated | Aug 13, 2021 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 129 LA CUESTA DR, GREENBRAE, CA 94904-1261 |
| Document Number | 0000028608 |
|---|---|
| Date | Aug 12, 2019 |
| Instrument | 2019-0028608 |
| Name | PNC BANK NA |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2049 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.87% |
| Adjustable | Adjustable Rate Rider |
| Type Change Date | Sep 1, 2029 |
| Change Frequency | Annually |
| Min Rate At Change | 2.5% |
| Max Rate At Change | 7.87% |
| Index | 1-Year LIBOR |
| Max Rate | 7.87% |
The 2025 property tax bill for 18140 Hwy 1 was $16,804.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Unified School District | Shoreline Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,394,375 (+2%) Land $1,059,725 Building $334,650 | |
| 2025 | $16,804.00 | $1,367,037 Land $1,038,948 Building $328,089 |
| 2023 | $16,324.00 (+1.41%) | $1,313,962 Land $998,611 Building $315,351 |
| 2022 | $16,097.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 18140 Hwy 1 in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 31 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 31 in force |
| Nearby Flood Claims | 10 (1982–2024) |
| Claims Outside the SFHA | 3 of 10 |
| Most Recent Claim | Dec 2024 · rainfall accumulation |
| 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 18140 Hwy 1 is high, ranking above 71% of the US, with a 0.4% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 71% of the US · above 46% of California |
|---|---|
| Wildfire Likelihood | 0.4% 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 | NORTH MARIN WATER DISTRICT serves 61,691 people · EPA ID CA2110003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2024 |
| Lead | Under 1 ppb (2024–2026) 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.
Source: FCC Broadband Data Collection, based on 7 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Starlink Satellite | 280 / 30 |
| Tomales Bay LAN Fixed Wireless | 125 / 125 |
4G LTE only, no 5G reported
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