Contra Costa County property record for 5231 Ramsdell Ct, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 3 ba · 4,239 sqft · built 2001 |
| Lot Size | 0.308 acres (13,430 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $566,500 (Mar 2002) |
| Tax Bill | $9,695 (2025) |
| Deeds & Mortgages | Jan 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 075-580-022-4 |
| Primary APN | 075-580-022-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 4,239 sqft Living Area |
| 1st Floor Area | 2,590 sqft |
| 2nd Floor Area | 1,649 sqft |
| Year Built | Built 2001 |
|---|---|
| Effective Year Built | Effective 2002 |
| Lot Area | 13,430 sqft (0.308 acres) |
| Garage Type | Attached |
| Garage Area | 625 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 5231 RAMSDELL CT |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-9119 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8320 L443 |
| Legal Subdivision | SUBDIVISION 8320 |
| Legal Tract | 8320 |
| Legal Lot Number | 443 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 355118 |
Source: Contra Costa County records · APN 075-580-022-4
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 | 5231 RAMSDELL CT, ANTIOCH, CA 94531-9119 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Mar 28, 2002 · Amount on Record |
| Deed Sale | Mar 28, 2002 · Amount on Record |
| Deed Document Number | 2002107819 |
| Last Transfer Date | Nov 22, 2005 |
| Transfer Doc | 0000460996 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 5231 RAMSDELL CT, ANTIOCH, CA 94531-9119 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Name | Verified Name |
|---|---|
| Address | 5231 RAMSDELL CT, ANTIOCH, CA 94531-9119 |
| Document Number | 0000010265 |
|---|---|
| Date | Jan 18, 2022 |
| Instrument | 2022-010265 |
| Name | BETTER MORTGAGE CORPORATION |
|---|---|
| Type | Mortgage Company |
| Address | NEW YORK, NY 10007 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 01, 2052 |
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 | $872,291 (+2%) Land $165,740 Building $706,551 | |
| 2025 | $9,695.00 (+5.9%) Homeowner's exemption | $855,189 (+4.04%) Land $162,491 Building $692,698 |
| 2023 | $9,155.00 (+1.64%) Homeowner's exemption | $821,982 Land $156,182 Building $665,800 |
| 2022 | $9,007.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133551182, 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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | High above 79% of the US · above 56% of California |
|---|---|
| Wildfire Likelihood | 0.6% annual chance |
| Exposure | Indirect 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, availability as of December 31, 2025 · sampled at 64 locations within half a mile · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
Source: EPA Safe Drinking Water Information System via ECHO, 2026 Q3 · EPA community water system boundaries v3.0, March 2026 · Last verified October 2026
| Water System | CITY OF ANTIOCH serves 116,781 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 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 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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