Marin County property record for 206 Helen Ave, Mill Valley, CA 94941
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 5 ba · 2,496 sqft · built 1935 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $14,394 (2025) |
| Deeds & Mortgages | Feb 2020 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 051-244-03 |
| Primary APN | 051-244-03 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 5 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,496 sqft Living Area |
| Basement Area | 336 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1935 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Type | Flat |
| Roof Material | Tar & Gravel |
| Lot Area | 6,000 sqft (0.138 acres) |
| Garage Area | 468 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 575 sqft |
| Patio Area | 575 sqft |
| Heating System | Central |
|---|
| Street Address | 206 HELEN AVE |
|---|---|
| City | MILL VALLEY |
| State | CA |
| Zip | 94941-3565 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MAP 4 PG 11 BLK 2 PART OF LOT 18-20 |
| Legal Subdivision | MARIN HEIGHTS |
| Legal Block | 2 |
| Legal Lot Number | 18-20 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SOUTHEAST MARIN |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 128100 |
206 Helen Ave is owner-occupied and held in a trust since March 2000.
Source: Marin County records, as of July 13, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 206 HELEN AVE, MILL VALLEY, CA 94941-3565 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
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 | Mar 28, 2000 |
| Transfer Doc | 0000017737 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 206 HELEN AVE, MILL VALLEY, CA 94941-3565 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|
| Document Number | 0000006630 |
|---|---|
| Date | Feb 20, 2020 |
| Instrument | 2020-0006630 |
| Name | CITIBANK NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Feb 19, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 206 Helen Ave was $14,394 with a homeowner's exemption.
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 | $890,935 (+2%) Land $256,389 Building $634,546 | |
| 2025 | $14,394.00 Homeowner's exemption | $873,466 Land $251,361 Building $622,105 |
| 2023 | $13,741.00 (+3.15%) Homeowner's exemption | $839,552 Land $241,601 Building $597,951 |
| 2022 | $13,321.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 206 Helen Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 4 in force |
| Nearby Flood Claims | 4 (1982–1998) |
| Claims Outside the SFHA | 4 of 4 |
| Most Recent Claim | Apr 1998 · Severe Winter Storms And Flooding |
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 206 Helen Ave is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Indirect within ember reach |
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 707 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: T-Mobile, Verizon.
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