Marin County property record for 586 Throckmorton Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4.5 ba · 5,358 sqft · built 1909 |
| Lot Size | 0.481 acres (20,962 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $5,690,000 (Jun 2018) |
| Tax Bill | $90,482 (2025) |
| Deeds & Mortgages | Jun 2018 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 027-172-30 |
| Primary APN | 027-172-30 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Building Area | 5,358 sqft Living Area |
| Basement Area | 204 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1909 |
|---|---|
| Effective Year Built | Effective 2011 |
| Architectural Style | Duplex Single |
| Lot Area | 20,962 sqft (0.481 acres) |
| Garage Area | 625 sqft |
| Parking Spaces | 2 Parking Spaces |
| Pool Area | 450 sqft |
| Deck Area | 1,246 sqft |
| Patio Area | 1,246 sqft |
| Heating System | Central |
|---|
| Street Address | 586 THROCKMORTON AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-1735 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | HEREINABOVE |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 4 |
| Census Block | 4002 |
| Census Tract | 127000 |
Source: Marin County records, as of July 13, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 586 THROCKMORTON AVE, MILL VALLEY, CA 94941-1735 |
| Owner Type | Company |
| Vesting | Borrower in Default |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 25, 2018 · Amount on Record |
| Deed Sale | Jun 25, 2018 · Amount on Record |
| Deed Document Number | 201822660 |
| Prior Transfer Date | Oct 1, 1998 |
| Prior Transfer Doc | 0000073684 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Jun 25, 2018 |
| Property Address | 586 THROCKMORTON AVE, MILL VALLEY, CA 94941-1735 |
| Document Number | 0000022660 |
| Instrument Date | Jun 21, 2018 |
| Instrument | 22660 |
| Transaction Type | Transfer |
| Record Updated | Jul 10, 2018 |
| Title Company | FIRST AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $6,259.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 586 THROCKMORTON AVE MILL VALLEY CA 949411735, MILL VALLEY, CA 94941-1735 |
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 | $7,762,849 (+2%) Land $1,961,346 Building $5,801,503 | |
| 2025 | $90,482.00 (+3.5%) | $7,610,679 (+4.04%) Land $1,922,898 Building $5,687,781 |
| 2023 | $87,426.00 (+3.42%) | $7,315,174 Land $1,848,234 Building $5,466,940 |
| 2022 | $84,535.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 2 (2005–2007) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | May 2007 · other causes |
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 40% of the US · lower than 76% of California |
|---|---|
| Wildfire Likelihood | 0.07% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 340 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: Unwired, Verizon.
5G and 4G LTE (outdoors only)
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