Marin County property record for 121 William Ave, Larkspur, CA 94939 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 947 sqft · built 1931 |
| Lot Size | 0.147 acres (6,380 sqft) |
| Owner | Individual Name on File |
| Last Sale | $1,445,000 (Nov 2017) |
| Tax Bill | $22,455 (2025) |
| Deeds & Mortgages | May 2026 Line of Credit Mar 2022 Mortgage + 1 more |
| Flood Zone | Zone X (moderate risk) |
| APN | 021-115-03 |
| Primary APN | 021-115-03 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Building Area | 947 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1931 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Contemporary |
| Lot Area | 6,380 sqft (0.147 acres) |
| Garage Area | 396 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 121 WILLIAM AVE |
|---|---|
| City | LARKSPUR |
| State | CA |
| Zip | 94939-2051 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Subdivision | BALTIMORE PARK |
| Legal Block | F |
| Legal Lot Number | 5 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | ROSS VALLEY |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 120002 |
Source: Marin County records · APN 021-115-03
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 | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| May 01, 2026 | Deed of Trust, Mortgage · Line of Credit STANFORD FEDERAL CREDIT UNION |
| Mar 02, 2022 | Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA |
| Nov 01, 2017 | Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Nov 01, 2017 · Amount on Record |
| Deed Sale | Nov 01, 2017 · Amount on Record |
| Deed Document Number | 201743573 |
| Prior Transfer Date | Feb 15, 2008 |
| Prior Transfer Doc | 0000007588 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | May 01, 2026 |
| Property Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Document Number | 0000012829 |
| Instrument Date | Apr 24, 2026 |
| Instrument | 202612829 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURAN |
| Name | Verified Name |
|---|---|
| Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Document Number | 0000012829, |
|---|---|
| Date | May 01, 2026 |
| Instrument | 202612829 |
| Name | STANFORD FEDERAL CREDIT UNION |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Apr 15, 2056 |
| Rate | 6.38% |
|---|---|
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Transaction Type | Mortgage |
| Record Updated | Jan 31, 2023 |
| Title Company | FIRST AMERICAN MORTGAGE SOL |
| Name | Verified Name |
|---|---|
| Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Document Number | 0000007971 |
|---|---|
| Date | Mar 02, 2022 |
| Instrument | 2022-0007971 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 01, 2052 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | MARIN CA |
| Recording Date | Nov 01, 2017 |
| Property Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Document Number | 0000043573 |
| Map Reference | MB2 PG90 |
| Instrument Date | Oct 25, 2017 |
| Instrument | 2017-0043573 |
| Transaction Type | Transfer |
| Record Updated | Aug 13, 2021 |
| Title Company | OLD REPUBLIC TITLE CO |
| 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 |
|---|---|
| Address | 121 WILLIAM AVE, LARKSPUR, CA 94939-2051 |
| Document Number | 0000043574 |
|---|---|
| Date | Nov 01, 2017 |
| Instrument | 2017-0043574 |
| Name | WELLS FARGO BANK NA |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Nov 01, 2047 |
Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,675,848 (+2%) Land $1,160,560 Building $515,288 | |
| 2025 | $22,455.00 (+5.76%) | $1,642,997 (+4.04%) Land $1,137,810 Building $505,187 |
| 2023 | $21,233.00 (+1.22%) | $1,579,201 Land $1,093,630 Building $485,571 |
| 2022 | $20,978.00 |
Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Wildfire Risk | Low above 34% of the US · above 20% of California |
|---|---|
| Wildfire Likelihood | About 1 in 3,333 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values are read at the parcel center point; lenders make the official flood determination.
Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 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.
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