The 2025 property tax bill for 20 Olympic Oaks Dr was $16,506.
Source: Contra Costa County assessment roll, as of July 14, 2026
Property Jurisdictions
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)
Tax Bill & Assessment History
Year
Tax Bill
Assessed Value
2026
$1,318,272 (+2%)Land $980,095Building $338,177
2025
$16,506.00
$1,292,425Land $960,878Building $331,547
2023
$15,782.00 (+6.65%)
$1,226,319Land $923,567Building $302,752
2022
$14,798.00
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
Flood
FEMA maps place 20 Olympic Oaks Dr 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
9 in force
Nearby Flood Claims
9 (1978–2017)
Claims Outside the SFHA
3 of 9
Most Recent Claim
Jan 2017 · Severe Winter Storms, Flooding, And Mudslides
Claims by Event
Severe Winter Storms And Flooding, Feb 1998 · 2 claims
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
Wildfire risk around 20 Olympic Oaks Dr is moderate, ranking above 43% of the US, with a 0.06% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
Wildfire Risk
Moderate above 43% of the US · lower than 74% of California
Wildfire Likelihood
0.06% annual chance
Exposure
Direct burnable vegetation
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Drinking Water
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
Violations Reported to EPA
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.
Internet Providers
Source: FCC Broadband Data Collection, based on 217 locations within half a mile, as of December 31, 2025