Marin County property record for 100 Adams Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 660 sqft · built 1922 |
| Lot Size | 0.426 acres (18,538 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $4,165 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 045-123-05 |
| Primary APN | 045-123-05 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Building Area | 660 sqft Living Area |
| Basement Area | 130 sqft |
| Year Built | Built 1922 |
|---|---|
| Effective Year Built | Effective 1925 |
| Architectural Style | Contemporary |
| Lot Area | 18,538 sqft (0.426 acres) |
| Deck Area | 180 sqft |
| Patio Area | 180 sqft |
| Street Address | 100 ADAMS AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-5010 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | MUIR WOODS PARK 05 |
| Legal Lot Number | 82 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 128200 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Listed Area | Within Dipsea Trail, The listed 2010 · 1 contributing resources · NRIS 10000356 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: Marin County records, as of July 13, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 100 ADAMS AVE, MILL VALLEY, CA 94941-5010 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
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 | $348,318 (+2%) Land $214,345 Building $133,973 | |
| 2025 | $4,165.00 (+5.79%) Homeowner's exemption | $341,489 (+4.04%) Land $210,143 Building $131,346 |
| 2023 | $3,937.00 (+3.5%) Homeowner's exemption | $328,231 Land $201,984 Building $126,247 |
| 2022 | $3,804.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (2024) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2024 · 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 58% of the US · lower than 65% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 144 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: Muir Beach LAN, Verizon.
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