Contra Costa County property record for 420 Warwick Dr, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,168 sqft · built 1962 |
| Lot Size | 0.229 acres (9,975 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $2,708 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 140-012-033-1 |
| Primary APN | 140-012-033-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,168 sqft Living Area |
| 1st Floor Area | 2,168 sqft |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 9,975 sqft (0.229 acres) |
| Garage Type | Attached |
| Garage Area | 551 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 420 WARWICK DR |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-4137 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 2895 167 |
| Legal Tract | 2895 |
| Legal Lot Number | 167 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3018 |
| Census Tract | 338302 |
420 Warwick Dr is held in a trust since April 2013.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 420 WARWICK DR, WALNUT CREEK, CA 94598-4137 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Apr 5, 2013 |
| Transfer Doc | 0000088395 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 420 Warwick Dr was $2,708.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $168,414 (+2%) Land $48,077 Building $120,337 | |
| 2025 | $2,708.00 | $165,113 Land $47,135 Building $117,978 |
| 2023 | $2,584.00 (+0.86%) | $158,703 Land $45,305 Building $113,398 |
| 2022 | $2,562.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 420 Warwick Dr in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1983.
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 |
| Nearby Flood Claims | 1 (1983) |
| Most Recent Claim | Dec 1983 · tidal / storm surge |
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.
Wildfire risk around 420 Warwick Dr is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 575 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, T-Mobile, Verizon.
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