3631 Walnut St, Lafayette, CA 94549 Property Records

Contra Costa County property record for 3631 Walnut St, Lafayette, CA 94549

Property Summary

Property Type	Triplex
Details	2,512 sqft · built 1970
Lot Size	0.151 acres (6,580 sqft)
Owner	Company Name on File
Tax Bill	$4,379 (2025)
Flood Zone	Zone X (minimal risk)
APN	`243-090-008`

Property Details

APN / Parcel Number

Primary APN	`243-090-008`
Alternative APN	`243-090-008-0`

Interior

Total Rooms	3 Rooms
Stories	1 Story
Building Area	2,512 sqft Living Area
1st Floor Area	2,512 sqft

Exterior

Year Built	Built 1970
Effective Year Built	Effective 1970
Architectural Style	Triplex
Lot Area	6,580 sqft (0.151 acres)

Location & Zoning

Street Address	3631 WALNUT ST
City	LAFAYETTE
State	CA
Zip	94549-4274
Property Category	Residential
Property Type	Residential > Multi-Unit > Triplex
Legal Description	BICKERSTAFF TR POR LOTS 21 & 22 BLK 4
Legal Subdivision	BICKERSTAFF
Legal Block	4
Legal Lot Number	21,22
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	1
Census Block	1009
Census Tract	350000

Owner

Source: Contra Costa County records · APN 243-090-008

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on File
Mailing Address	3611 WALNUT ST, LAFAYETTE, CA 94549-4220
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Transfer Date	Apr 04, 1996
Transfer Doc	0000100712
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

Assessed value is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2026		$98,667 (+2%) Land $61,941 Building $36,726
2025	$4,379.00 (+2%)	$96,733 (+4.04%) Land $60,727 Building $36,006
2023	$4,293.00 (-1.22%)	$92,978 Land $58,370 Building $34,608
2022	$4,346.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), as of October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133500001, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 25 individual policies
Nearby Flood Policies	63 units insured incl. 38 condo units
Nearby Flood Claims	9 (1987–2001)
Claims Outside the SFHA	1 of 9
Most Recent Claim	Dec 2001 · rainfall accumulation
Claims by Event	Severe Storms, Flooding, Mud And Landslides, Jan 1997 · 4 claims Severe Winter Storms, Flooding, Landslides, Mud Flows, Jan 1995 · 2 claims

Wildfire

Wildfire Risk	Moderate above 45% of the US · lower than 73% of California
Wildfire Likelihood	0.08% annual chance
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Etheric Communications, LLC., T-Mobile USA, Verizon.

Based on FCC filings for 275 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA0110005, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	EAST BAY MUD serves 1,468,000 people
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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.