Contra Costa County property record for 2850 Prospect St, Concord, CA 94518
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 833 sqft · built 1943 |
| Lot Size | 0.144 acres (6,250 sqft) |
| Owner | 2 Company Names on File |
| Tax Bill | $3,451 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 105-026-002-3 |
| Primary APN | 105-026-002-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 833 sqft Living Area |
| Gross Area | 1,138 sqft |
| 1st Floor Area | 833 sqft |
| Year Built | Built 1943 |
|---|---|
| Effective Year Built | Effective 1943 |
| Lot Area | 6,250 sqft (0.144 acres) |
| Lot Dimensions | 125 ft deep x 50 ft wide |
| Garage Type | Attached |
| Garage Area | 305 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 2850 PROSPECT ST |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94518-1023 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | DORIS COURT ADDN LOT 7 BLK 14 |
| Legal Subdivision | DORIS COURT ADD |
| Legal Block | 14 |
| Legal Lot Number | 7 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 335000 |
Source: Contra Costa County records · APN 105-026-002-3
Assessment roll updated July 14, 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 | 2 Company Names on File |
|---|---|
| Mailing Address | 3364 DEER HILL RD, LAFAYETTE, CA 94549-3258 |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 09, 1998 |
| Deed Sale | Jul 09, 1998 |
| Deed Document Number | 1998157826 |
| Last Transfer Date | Jan 30, 2025 |
| Transfer Doc | 0000015505 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Concord City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $225,339 (+2%) Land $164,680 Building $60,659 | |
| 2025 | $3,451.00 (+5.6%) | $220,921 (+4.04%) Land $161,451 Building $59,470 |
| 2023 | $3,268.00 (+2%) | $212,344 Land $155,183 Building $57,161 |
| 2022 | $3,204.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133350003, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (2003) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 2003 · rainfall accumulation |
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable · Fiber in parts of the area | 2,000 / 250 |
| Radiate Holdings Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: Sonic Telecom, Verizon.
Based on FCC filings for 468 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System, water system CA0710003, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CONTRA COSTA WATER DISTRICT serves 210,500 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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