Marin County property record for 643 Northern Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,978 sqft · built 1972 |
| Lot Size | 0.269 acres (11,704 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,755,000 (Dec 2018) |
| Tax Bill | $28,946 (2025) |
| Deeds & Mortgages | Nov 2020 Transfer Dec 2018 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 049-121-09 |
| Primary APN | 049-121-09 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Building Area | 1,978 sqft Living Area |
| Basement Area | 84 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 2005 |
| Architectural Style | Contemporary |
| Lot Area | 11,704 sqft (0.269 acres) |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 668 sqft |
| Patio Area | 668 sqft |
| Heating System | Central |
|---|
| Street Address | 643 NORTHERN AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-3935 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MAP D6 606 |
| Legal Subdivision | LITTLE CITY FARMS |
| Legal Lot Number | 14 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 128100 |
Source: Marin County records · APN 049-121-09
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 Company Names on File |
|---|---|
| Mailing Address | 643 NORTHERN AVE, MILL VALLEY, CA 94941-3935 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living Trust |
| Date | Document |
|---|---|
| Nov 17, 2020 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Dec 27, 2018 | Grant Deed, Transfer · Conventional Mortgage AMERICAN PACIFIC MORTGAGE |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 27, 2018 · Amount on Record |
| Deed Sale | Dec 27, 2018 · Amount on Record |
| Prior Sale | Jul 14, 2000 · Amount on Record |
| Deed Document Number | 201844010 |
| Last Transfer Date | Oct 19, 2020 |
| Transfer Doc | 0000057910 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Nov 17, 2020 |
| Property Address | 643 NORTHERN AVE, MILL VALLEY, CA 94941-3935 |
| Document Number | 0000057910 |
| Instrument Date | Oct 19, 2020 |
| Instrument | 57910 |
| Transaction Type | Transfer |
| Record Updated | Dec 01, 2020 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 643 NORTHERN AVE MILL VALLEY CA 949413935, MILL VALLEY, CA 94941-3935 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Dec 27, 2018 |
| Property Address | 643 NORTHERN AVE, MILL VALLEY, CA 94941-3935 |
| Document Number | 0000044010 |
| Map Reference | VOL 2 PG 85 |
| Instrument Date | Dec 19, 2018 |
| Instrument | 2018-0044010 |
| Transaction Type | Transfer |
| Record Updated | Aug 13, 2021 |
| Title Company | STEWART TITLE |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 00000 |
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 643 NORTHERN AVE, MILL VALLEY, CA 94941-3935 |
| Document Number | 0000044011 |
|---|---|
| Date | Dec 27, 2018 |
| Instrument | 2018-0044011 |
| Name | AMERICAN PACIFIC MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jan 01, 2049 |
Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,996,856 (+2%) Land $910,248 Building $1,086,608 | |
| 2025 | $28,946.00 (+4.84%) | $1,957,702 (+4.04%) Land $892,400 Building $1,065,302 |
| 2023 | $27,610.00 (+4.04%) | $1,881,693 Land $857,752 Building $1,023,941 |
| 2022 | $26,538.00 |
Source: FEMA National Flood Hazard Layer as of October 18, 2023 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 6 (1982–2019) |
| Claims Outside the SFHA | 3 of 6 |
| Most Recent Claim | Feb 2019 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
| Wildfire Risk | Moderate above 52% of the US · lower than 69% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| 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 USA, Unwired, Verizon.
Based on FCC filings for 496 locations within half a mile of this property.
5G and 4G LTE (outdoors only)
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | MARIN MUNICIPAL WATER DISTRICT serves 188,116 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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