Contra Costa County property record for 857 Marsh Ct, Brentwood, CA 94513
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,176 sqft · built 1972 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $840 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 017-201-025-8 |
| Primary APN | 017-201-025-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,176 sqft Living Area |
| 1st Floor Area | 1,176 sqft |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1973 |
| Lot Area | 6,500 sqft (0.149 acres) |
| Garage Type | Attached |
| Garage Area | 451 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 857 MARSH CT |
|---|---|
| City | BRENTWOOD |
| State | CA |
| Zip | 94513-1225 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | SF |
| Legal Description | TRACT 4249 LOT 25 |
| Legal Subdivision | MARSH ESTATES UNIT #1 |
| Legal Tract | 4249 |
| Legal Lot Number | 25 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1027 |
| Census Tract | 303202 |
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 | 857 MARSH CT, BRENTWOOD, CA 94513-1225 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Jun 24, 2004 |
| Transfer Doc | 0000255269 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Brentwood City |
| Elementary School District | Brentwood Union Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $64,092 (+2%) Land $17,998 Building $46,094 | |
| 2025 | $840.00 (+3.83%) Homeowner's exemption | $62,837 (+4.04%) Land $17,646 Building $45,191 |
| 2023 | $809.00 (+2.15%) Homeowner's exemption | $60,398 Land $16,961 Building $43,437 |
| 2022 | $792.00 |
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 6 in force |
| Nearby Flood Claims | 2 (1982–2025) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Feb 2025 |
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 | BRENTWOOD serves 64,513 people · EPA ID CA0710004 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Oct 2024 |
| 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.
Source: FCC Broadband Data Collection, based on 640 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Sonic Telecom, Verizon.
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