Marin County property record for 64 Castle Rock Dr, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,883 sqft · built 1964 |
| Lot Size | 0.208 acres (9,044 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $5,765 (2025) |
| Deeds & Mortgages | Sep 2026 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 047-051-06 |
| Primary APN | 047-051-06 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Building Area | 1,883 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1966 |
| Architectural Style | Contemporary |
| Lot Area | 9,044 sqft (0.208 acres) |
| Garage Area | 384 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Central |
|---|
| Street Address | 64 CASTLE ROCK DR |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-2607 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | CASTLE PARK |
| Legal Lot Number | 60,63 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 128200 |
64 Castle Rock Dr is owned by an individual who acquired it in August 2016.
Source: Marin County records, as of September 18, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 121 WOOD LN, FAIRFAX, CA 94930-2017 |
| 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 | Name on Deed |
|---|---|
| Last Transfer Date | Aug 24, 2016 |
| Transfer Doc | 0000044210 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death of Trustee |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Sep 8, 2026 |
| Property Address | 64 CASTLE ROCK DR, MILL VALLEY, CA 94941-2607 |
| Document Number | 0000025740 |
| Instrument Date | Sep 1, 2026 |
| Instrument | 202625740 |
| Transaction Type | Transfer |
| Record Updated | Sep 17, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 121 WOOD LN, FAIRFAX, CA 94930-2017 |
The 2025 property tax bill for 64 Castle Rock Dr was $5,765.
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 | $172,547 (+2%) Land $36,885 Building $135,662 | |
| 2025 | $5,765.00 | $169,165 Land $36,162 Building $133,003 |
| 2023 | $5,373.00 (+4.66%) | $162,597 Land $34,758 Building $127,839 |
| 2022 | $5,134.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 64 Castle Rock Dr in Zone X, an area of minimal flood risk, though there have been 9 flood claims nearby since 1982.
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 |
| Flood Insurance Cost | Premium on File median of 17 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 17 in force |
| Nearby Flood Claims | 9 (1982–2017) |
| Claims Outside the SFHA | 7 of 9 |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
| 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 64 Castle Rock Dr is moderate, ranking above 46% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 46% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.09% 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 351 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.
4G LTE only, no 5G reported
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