Contra Costa County property record for 817 Marin Rd, El Sobrante, CA 94803
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,376 sqft · built 1948 |
| Lot Size | 0.248 acres (10,800 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $520,000 (Oct 2022) |
| Tax Bill | $9,064 (2025) |
| Deeds & Mortgages | Oct 2022 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 426-181-015-6 |
| Primary APN | 426-181-015-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,376 sqft Living Area |
| 1st Floor Area | 1,376 sqft |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1948 |
| Lot Area | 10,800 sqft (0.248 acres) |
| Street Address | 817 MARIN RD |
|---|---|
| City | EL SOBRANTE |
| State | CA |
| Zip | 94803-1321 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | SANTA RITA ACRES #7 424 |
| Legal Subdivision | SANTA RITA ACRES 07 |
| Legal Lot Number | 424 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 363000 |
Source: Contra Costa County records, as of July 14, 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 Record |
|---|---|
| Mailing Address | 828 MARIN RD, EL SOBRANTE, CA 94803-1322 |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 31, 2022 · Amount on Record |
| Deed Sale | Oct 31, 2022 · Amount on Record |
| Prior Sale | Nov 30, 1995 · Amount on Record |
| Deed Document Number | 2022167843 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 31, 2022 |
| Property Address | 817 MARIN RD, EL SOBRANTE, CA 94803-1321 |
| Document Number | 0000167843 |
| Map Reference | MB 25 PG 809 |
| Instrument Date | Oct 26, 2022 |
| Instrument | 2022-167843 |
| Transaction Type | Transfer |
| Record Updated | Nov 8, 2022 |
| Title Company | PLACER TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 828 MAINE AVE, RICHMOND, CA 94804-2461 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $622,927 (+2%) Land $498,767 Building $124,160 | |
| 2025 | $9,064.00 (+4.54%) | $610,714 (+4.04%) Land $488,988 Building $121,726 |
| 2023 | $8,670.00 (+120.05%) | $587,000 Land $470,000 Building $117,000 |
| 2022 | $3,940.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 1 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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 510 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 in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile.
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