Contra Costa County property record for 424 21st St, Richmond, CA 94801
| Property Type | Quadplex |
|---|---|
| Details | 8 bd · 4 ba · 3,158 sqft · built 1964 |
| Lot Size | 0.129 acres (5,625 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $215,000 (Aug 2008) |
| Tax Bill | $8,368 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 514-110-023-9 |
| Primary APN | 514-110-023-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 8 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 3,158 sqft Living Area |
| 1st Floor Area | 3,158 sqft |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Roof Material | Other |
| Lot Area | 5,625 sqft (0.129 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Parking Spaces | 4 Parking Spaces |
| Porch | Porch |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 424 21ST ST, 430 |
|---|---|
| City | RICHMOND |
| State | CA |
| Zip | 94801-3304 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Quadplex |
| Local Zoning Code | MFR3 |
| Legal Description | CITY OF RICHMOND LOTS 17 & 18 BLK 110 |
| Legal Subdivision | RICHMOND |
| Legal Block | 110 |
| Legal Lot Number | 17,18 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 375000 |
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 | 424 21ST ST, 430, RICHMOND, CA 94801-3304 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 11, 2008 · Amount on Record |
| Deed Sale | Aug 11, 2008 · Amount on Record |
| Prior Sale | Oct 12, 2007 · Amount on Record |
| Deed Document Number | 2008177819 |
| Prior Transfer Date | May 5, 2006 |
| Prior Transfer Doc | 0000148397 |
| 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 | Richmond City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $262,684 (+2%) Land $131,342 Building $131,342 | |
| 2025 | $8,368.00 (+5.07%) Homeowner's exemption | $257,534 (+4.04%) Land $128,767 Building $128,767 |
| 2023 | $7,964.00 (+3.59%) Homeowner's exemption | $247,536 (+2%) Land $123,768 Building $123,768 |
| 2022 | $7,688.00 Homeowner's exemption | $242,684 Land $121,342 Building $121,342 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; 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 | 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 1,047 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 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Verizon.
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