Contra Costa County property record for 3231 Alfonso Dr, Concord, CA 94518
| Property Type | Townhouse |
|---|---|
| Details | 4 bd · 2.5 ba · 1,541 sqft · built 1973 |
| Lot Size | 0.142 acres (6,164 sqft) |
| Owner | Company Name on Record |
| Last Sale | $507,500 (Jun 2016) |
| Tax Bill | $7,617 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 129-433-005-3 |
| Primary APN | 129-433-005-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,541 sqft Living Area |
| Gross Area | 2,014 sqft |
| 1st Floor Area | 672 sqft |
| 2nd Floor Area | 869 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Townhouse |
| Exterior Material | Wood Siding |
| Construction Type | Concrete |
| Roof Material | Tile |
| Lot Area | 6,164 sqft (0.142 acres) |
| Lot Dimensions | 92 ft deep x 67 ft wide |
| Garage Type | Attached |
| Garage Area | 473 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3231 ALFONSO DR |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94518-2223 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | R6 |
| Legal Description | TRACT 3785 LOT 57 |
| Legal Subdivision | TREAT PARK |
| Legal Tract | 3785 |
| Legal Lot Number | 57 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 337202 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 5578 MERRITT CT, CONCORD, CA 94521-4740 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 15, 2016 · Amount on Record |
| Deed Sale | Jun 15, 2016 · Amount on Record |
| Prior Sale | Jan 27, 1994 · Amount on Record |
| Deed Document Number | 2016116123 |
| Prior Transfer Date | Sep 18, 2012 |
| Prior Transfer Doc | 0000232777 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Concord City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $612,782 (+2%) Land $313,938 Building $298,844 | |
| 2025 | $7,617.00 (+4.63%) | $600,768 (+4.04%) Land $307,783 Building $292,985 |
| 2023 | $7,280.00 (+1.38%) | $577,442 Land $295,833 Building $281,609 |
| 2022 | $7,181.00 |
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 7 (15% 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 | 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| 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, 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 645 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL | 100 / 20 |
May also be available: T-Mobile, Verizon.
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