Marin County property record for 311 C St, San Rafael, CA 94901
| Property Type | Duplex |
|---|---|
| Details | 4 bd · 2 ba · 1,918 sqft · built 1964 |
| Lot Size | 0.11 acres (4,800 sqft) |
| Owner | Company Name on File |
| Last Sale | $791,500 (Mar 2005) |
| Tax Bill | $16,846 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 012-182-29 |
| Primary APN | 012-182-29 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Units | 2 Units |
| Building Area | 1,918 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1972 |
| Architectural Style | Duplex Single |
| Lot Area | 4,800 sqft (0.11 acres) |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | 336 sqft |
| Patio Area | 370 sqft |
| Heating System | Central |
|---|
| Street Address | 311 C ST |
|---|---|
| City | SAN RAFAEL |
| State | CA |
| Zip | 94901-4918 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | BLK A LOT 27 |
| Legal Subdivision | SHORTS ADD |
| Legal Block | A |
| Legal Lot Number | 27 |
| Jurisdiction | MARIN CA |
| Township / Civil Division | SAN RAFAEL |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 112100 |
311 C St, a duplex, is owned by a company that bought it in March 2005.
Source: Marin County records, as of July 13, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 518 BISCAYNE DR, SAN RAFAEL, CA 94901-8321 |
| Owner Type | Company |
| Vesting | Company |
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 Sale | Mar 1, 2005 · Amount on File |
| Deed Sale | Mar 1, 2005 · Amount on File |
| Prior Sale | Jan 8, 1997 · Amount on File |
| Deed Document Number | 200513946 |
| Prior Transfer Date | Apr 29, 1994 |
| Prior Transfer Doc | 0000037340 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 311 C St was $16,846.
Source: Marin County assessment roll, as of July 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Marin County |
| Municipality | San Rafael City |
| Elementary School District | San Rafael City Elementary School District (KG - 08) |
| Secondary School District | San Rafael City High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,117,913 (+2%) Land $639,742 Building $478,171 | |
| 2025 | $16,846.00 | $1,095,998 Land $627,201 Building $468,797 |
| 2023 | $15,826.00 (+5.47%) | $1,053,449 Land $602,851 Building $450,598 |
| 2022 | $15,005.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 311 C St in Zone X, an area of moderate flood risk, though there have been 5 flood claims nearby since 1980.
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 |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 8 in force |
| Nearby Flood Claims | 5 (1980–2016) |
| Claims Outside the SFHA | 2 of 5 |
| Most Recent Claim | Jan 2016 · rainfall accumulation |
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.
The area around 311 C St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land 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 564 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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