Contra Costa County property record for 4020 Mario Way, Lafayette, CA 94549
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,651 sqft · built 1961 |
| Lot Size | 0.298 acres (12,960 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $4,820 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 252-022-002-7 |
| Primary APN | 252-022-002-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,651 sqft Living Area |
| 1st Floor Area | 2,651 sqft |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 12,960 sqft (0.298 acres) |
| Garage Type | Attached |
| Garage Area | 364 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 4020 MARIO WAY |
|---|---|
| City | LAFAYETTE |
| State | CA |
| Zip | 94549-3407 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 2109 LOT 23 |
| Legal Tract | 2109 |
| Legal Lot Number | 23 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 350000 |
4020 Mario Way is owned and occupied by two individuals.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4020 MARIO WAY, LAFAYETTE, CA 94549-3407 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 4020 Mario Way was $4,820 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 | $258,613 (+2%) Land $59,981 Building $198,632 | |
| 2025 | $4,820.00 Homeowner's exemption | $253,543 Land $58,805 Building $194,738 |
| 2023 | $4,632.00 (+1.67%) Homeowner's exemption | $243,699 Land $56,522 Building $187,177 |
| 2022 | $4,556.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4020 Mario Way in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 4020 Mario Way is low, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 63% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 277 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
May also be available: AT&T, Etheric Networks, Unwired.
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