Contra Costa County property record for 830 Tampico, Walnut Creek, CA 94598
| Property Type | Townhouse |
|---|---|
| Details | 4 bd · 2.5 ba · 1,784 sqft · built 1974 |
| Lot Size | 0.043 acres (1,875 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $560,000 (Jul 2004) |
| Tax Bill | $7,352 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 140-371-039-3 |
| Primary APN | 140-371-039-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,784 sqft Living Area |
| 1st Floor Area | 827 sqft |
| 2nd Floor Area | 957 sqft |
| Year Built | Built 1974 |
|---|---|
| Effective Year Built | Effective 1991 |
| Architectural Style | Townhouse |
| Lot Area | 1,875 sqft (0.043 acres) |
| Garage Type | Attached |
| Garage Area | 403 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 830 TAMPICO |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-2931 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PD |
| Legal Description | TRACT 4538 LOT 46 |
| Legal Subdivision | MAP OF TRACT 4538 |
| Legal Tract | 4538 |
| Legal Lot Number | 46 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 343002 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 830 TAMPICO, WALNUT CREEK, CA 94598-2931 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 29, 2004 · Amount on Record |
| Deed Sale | Jul 29, 2004 · Amount on Record |
| Deed Document Number | 2004292357 |
| Last Transfer Date | Sep 6, 2012 |
| Transfer Doc | 0000227040 |
| Record Updated | Sep 20, 2026 |
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 | $606,334 (+2%) Land $245,023 Building $361,311 | |
| 2025 | $7,352.00 (+4.22%) Homeowner's exemption | $594,446 (+4.04%) Land $240,219 Building $354,227 |
| 2023 | $7,054.00 (+0.9%) Homeowner's exemption | $571,365 Land $230,892 Building $340,473 |
| 2022 | $6,991.00 |
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 8 (10% premium discount) |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 1 (2004) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Jan 2004 · 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 301 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Etheric Networks, Sonic Telecom.
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