Marin County property record for 12 William Ave, Larkspur, CA 94939 · Last verified July 2026
| Property Type | Residential > Multi-Unit > Duplex |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 1.75 Baths |
| Architecture Style | Duplex Single |
| Year Built | Built 1920 |
| Lot Size | 7,303 sqft (0.167 acres) |
| Occupancy | Owner Occupied |
| Tax Bill | $5,571.00 (2025) |
| Primary APN | 020-271-13 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.75 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 7 Rooms |
| Units | 2 Units |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Duplex Single Style |
| Lot Area | 7,303 sqft (0.167 acres) |
| Street Address | 12 WILLIAM AVE |
|---|---|
| City | LARKSPUR |
| State | CA |
| Zip | 94939-2052 |
| Property Usage | Residential Property Usage |
| Type | Residential > Multi-Unit > Duplex |
| Legal Subdivision | BALTIMORE PARK |
| Legal Lot Number | 3 |
| Jurisdiction | MARIN CA |
| Minor Civil Division | ROSS VALLEY |
| Census Blockgroup | 3 |
| Census Block | 3022 |
| Census Tract | 120002 |
Source: Marin County records · APN 020-271-13
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 | PO BOX 678, LARKSPUR, CA 94977-0678 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Date | Document |
|---|---|
| Jan 29, 2021 | Deed of Trust, Mortgage · Reverse Mortgage AMERICAN ADVISORS GROUP |
| Jan 05, 2021 | Deed of Trust, Mortgage · Federal Housing Administration (FHA) Mortgage COMMISSIONER/HSNG & URBAN DEV |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Dec 13, 2005 |
| Transfer Doc | 0000098312 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 12 WILLIAM AVE, LARKSPUR, CA 94939-2052 |
| Transaction Type | Mortgage |
| Record Updated | Feb 09, 2021 |
| Name | Verified Name |
|---|---|
| Address | 12 WILLIAM AVE, LARKSPUR, CA 94939-2052 |
| Document Number | 0000006231 |
|---|---|
| Date | Jan 29, 2021 |
| Instrument | 2021-0006231 |
| Name | AMERICAN ADVISORS GROUP |
|---|---|
| Type | Mortgage Company |
| Address | IRVINE, CA 92612 |
| Type | Reverse Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 893 Months |
| Due | Jun 15, 2095 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.43% |
| Type Change Date | Feb 01, 2022 |
| Change Frequency | Annually |
| Index | 1-Year LIBOR |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | MARIN CA |
| Property Address | 12 WILLIAM AVE, LARKSPUR, CA 94939-2052 |
| Document Number | 0000006232 |
| Instrument Date | Jan 05, 2021 |
| Transaction Type | Mortgage |
| Record Updated | Feb 16, 2021 |
| Title Company | OTHER |
| Name | Verified Name |
|---|---|
| Address | 12 WILLIAM AVE LARKSPUR CA 949392052, LARKSPUR, CA 94939-2052 |
| Document Number | 0000006232 |
|---|---|
| Date | Jan 29, 2021 |
| Instrument | 6232 |
| Name | COMMISSIONER/HSNG & URBAN DEV |
|---|---|
| Address | 451 7TH ST SW, WASHINGTON, DC 20410-0001 |
| Type | Federal Housing Administration (FHA) Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 888 Months |
| Due | Jan 28, 2095 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 2.43% |
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 | $154,347 (+2%) Land $57,615 Building $96,732 | |
| 2025 | $5,571.00 (+7.32%) Homeowner's exemption | $151,321 (+4.04%) Land $56,485 Building $94,836 |
| 2023 | $5,191.00 (+3.67%) Homeowner's exemption | $145,445 Land $54,292 Building $91,153 |
| 2022 | $5,007.00 |
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 20% of the US · above 11% of California |
|---|---|
| Wildfire Likelihood | About 1 in 10,000 per year |
| Exposure | Indirect within ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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