Contra Costa County property record for 821 Avalon Ave, Lafayette, CA 94549
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 2,340 sqft · built 1951 |
| Lot Size | 0.243 acres (10,600 sqft) |
| Owner | Trust Name on File |
| Last Sale | $950,000 (Aug 2010) |
| Tax Bill | $15,278 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 234-042-017-9 |
| Primary APN | 234-042-017-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,340 sqft Living Area |
| 1st Floor Area | 2,340 sqft |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1965 |
| Lot Area | 10,600 sqft (0.243 acres) |
| Garage Type | Attached |
| Garage Area | 470 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 821 AVALON AVE |
|---|---|
| City | LAFAYETTE |
| State | CA |
| Zip | 94549-5013 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | PARADISE ACRES #2 LOT 21 |
| Legal Subdivision | PARADISE ACRES 02 |
| Legal Lot Number | 21 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 349000 |
821 Avalon Ave is owner-occupied and held in a trust since April 2012.
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 821 AVALON AVE, LAFAYETTE, CA 94549-5013 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 26, 2010 · Amount on File |
| Deed Sale | Aug 26, 2010 · Amount on File |
| Deed Document Number | 2010178735 |
| Last Transfer Date | Apr 9, 2012 |
| Transfer Doc | 0000103253 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 821 Avalon Ave was $15,278 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Lafayette City |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Lafayette Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,241,446 (+2%) Land $1,088,559 Building $152,887 | |
| 2025 | $15,278.00 Homeowner's exemption | $1,217,105 Land $1,067,215 Building $149,890 |
| 2023 | $14,750.00 (+1.57%) Homeowner's exemption | $1,169,845 Land $1,025,775 Building $144,070 |
| 2022 | $14,522.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 821 Avalon Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 5 (1982–2023) |
| Claims Outside the SFHA | 1 of 5 |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 821 Avalon Ave is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 459 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, T-Mobile.
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