Marin County property record for 106 William Ave, Larkspur, CA 94939
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 4 ba · 2,276 sqft · built 2016 |
| Lot Size | 0.148 acres (6,430 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $3,000,000 (Aug 2017) |
| Tax Bill | $42,454 (2025) |
| Deeds & Mortgages | Aug 2017 Sale & Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 021-104-27 |
| Primary APN | 021-104-27 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 4 Baths |
| Building Area | 2,276 sqft Living Area |
| Year Built | Built 2016 |
|---|---|
| Effective Year Built | Effective 2016 |
| Architectural Style | Contemporary |
| Lot Area | 6,430 sqft (0.148 acres) |
| Garage Area | 267 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | 450 sqft |
| Patio Area | 450 sqft |
| Heating System | Central |
|---|
| Street Address | 106 WILLIAM AVE |
|---|---|
| City | LARKSPUR |
| State | CA |
| Zip | 94939-2028 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | BALTIMORE PARK |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 3 |
| Census Block | 3021 |
| Census Tract | 120002 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Larkspur Downtown Historic District listed 1982 · 42 contributing resources · NRIS 82000972 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
106 William Ave is owned by a company that bought it in August 2017 and is owner-occupied.
Source: Marin County records, as of July 13, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 106 WILLIAM AVE, LARKSPUR, CA 94939-2028 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Borrower in Default |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Aug 3, 2017 · Amount on File |
| Deed Sale | Aug 3, 2017 · Amount on File |
| Prior Sale | Nov 9, 2012 · Amount on File |
| Deed Document Number | 201730950 |
| Prior Transfer Date | Jun 15, 2007 |
| Prior Transfer Doc | 0000050131 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Aug 3, 2017 |
| Property Address | 106 WILLIAM AVE, LARKSPUR, CA 94939-2028 |
| Document Number | 0000030950 |
| Map Reference | VOL2 PG90 |
| Instrument Date | Jul 27, 2017 |
| Instrument | 2017-0030950 |
| Transaction Type | Transfer |
| Record Updated | Jul 21, 2022 |
| Title Company | OLD REPUBLIC TITLE CO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| 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 | Family Trust |
| Address | 2004 WILLIAM AVE, LARKSPUR, CA 94939 |
| Document Number | 0000030951 |
|---|---|
| Date | Aug 3, 2017 |
| Instrument | 2017-0030951 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3% |
| Type Change Date | Sep 1, 2027 |
| Change Frequency | Annually |
| Min Rate At Change | 2.5% |
| Index | 1-Month LIBOR |
| Max Rate | 9.95% |
The 2025 property tax bill for 106 William Ave was $42,454.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | Larkspur City |
| Elementary School District | Larkspur Elementary School District (KG - 08) |
| Secondary School District | Tamalpais Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $3,481,680 (+2%) Land $1,972,952 Building $1,508,728 | |
| 2025 | $42,454.00 | $3,413,430 Land $1,934,277 Building $1,479,153 |
| 2023 | $40,203.00 (+0.91%) | $3,280,890 Land $1,859,171 Building $1,421,719 |
| 2022 | $39,842.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 106 William Ave in Zone X, an area of moderate 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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
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 106 William Ave is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.03% 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 448 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: T-Mobile, Unwired.
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