Contra Costa County property record for 21 Madrid Ln, Antioch, CA 94509 · Last verified July 2026
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 2.5 ba · 1,354 sqft · built 1981 |
| Lot Size | 0.023 acres (1,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $86,000 (Nov 2012) |
| Tax Bill | $1,751 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 076-580-112-1 |
| Primary APN | 076-580-112-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,354 sqft Living Area |
| 1st Floor Area | 671 sqft |
| 2nd Floor Area | 683 sqft |
| Year Built | Built 1981 |
|---|---|
| Effective Year Built | Effective 1982 |
| Architectural Style | Townhouse |
| Lot Area | 1,000 sqft (0.023 acres) |
| Cooling System | Central |
|---|
| Street Address | 21 MADRID LN |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-4455 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Legal Description | T04994 L0112 B EX MR |
| Legal Tract | 04994 |
| Legal Lot Number | 112 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 307205 |
Source: Contra Costa County records · APN 076-580-112-1
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 Individual Names on File |
|---|---|
| Mailing Address | 991 RIDGE DR, CONCORD, CA 94518-1400 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 13, 2012 · Amount on Record |
| Deed Sale | Nov 13, 2012 · Amount on Record |
| Prior Sale | Jul 13, 2012 · Amount on Record |
| Deed Document Number | 2012286591 |
| 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 | Antioch City |
| Unified School District | Antioch 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 | $108,009 (+2%) Land $12,555 Building $95,454 | |
| 2025 | $1,751.00 (+6.96%) | $105,892 (+4.04%) Land $12,309 Building $93,583 |
| 2023 | $1,637.00 (+1.24%) | $101,782 Land $11,832 Building $89,950 |
| 2022 | $1,617.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133072052, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond 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, availability as of December 31, 2025 · Published October 2026 · based on 705 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Unwired, Verizon, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
Search by:
By searching, you agree to: Terms • Privacy • Disclosures