Marin County property record for 678 Northern Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2.5 ba · 2,205 sqft · built 1921 |
| Lot Size | 0.276 acres (12,000 sqft) |
| Owner | Individual Name on File |
| Last Sale | $378,000 (Jun 1995) |
| Tax Bill | $13,137 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 049-113-09 |
| Primary APN | 049-113-09 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Building Area | 2,205 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1921 |
|---|---|
| Effective Year Built | Effective 1974 |
| Architectural Style | Contemporary |
| Lot Area | 12,000 sqft (0.276 acres) |
| Garage Area | 308 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 763 sqft |
| Patio Area | 763 sqft |
| Heating System | Central |
|---|
| Street Address | 678 NORTHERN AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-3934 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 128100 |
Source: Marin County records · APN 049-113-09
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 | Individual Name on File |
|---|---|
| Mailing Address | 678 NORTHERN AVE, MILL VALLEY, CA 94941-3934 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 29, 1995 · Amount on Record |
| Deed Sale | Jun 29, 1995 · Amount on Record |
| Deed Document Number | 199529689 |
| Record Updated | Sep 20, 2026 |
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 | $672,683 (+2%) Land $270,676 Building $402,007 | |
| 2025 | $13,137.00 (+6.64%) Homeowner's exemption | $659,492 (+4.04%) Land $265,368 Building $394,124 |
| 2023 | $12,319.00 (+0.38%) Homeowner's exemption | $633,887 Land $255,065 Building $378,822 |
| 2022 | $12,272.00 |
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 64% of the US · lower than 61% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: Unwired.
Based on FCC filings for 77 locations within half a mile of this property.
4G LTE (outdoors only), no 5G reported
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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