3703 Mount Diablo Blvd, Lafayette, CA 94549 Property Records

Contra Costa County property record for 3703 Mount Diablo Blvd, Lafayette, CA 94549

Property Summary

Property Type	Commercial Office
Details	1,754 sqft · built 1940
Lot Size	0.16 acres (6,969 sqft)
Owner	2 Individual Names on File
Last Sale	$1,600,000 (Apr 2017)
Tax Bill	$22,445 (2025)
Deeds & Mortgages	Apr 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`241-050-006-6`

Property Details

APN / Parcel Number

Primary APN	`241-050-006-6`
Alternative APN	`241-050-006`

Interior

Total Rooms	1 Room
Stories	1 Story
Building Area	1,754 sqft Gross Area
1st Floor Area	1,754 sqft

Exterior

Year Built	Built 1940
Effective Year Built	Effective 1980
Lot Area	6,969 sqft (0.16 acres)

Location & Zoning

Street Address	3703 MT DIABLO BLVD
City	LAFAYETTE
State	CA
Zip	94549-3538
Property Category	Commercial
Property Type	Commercial > Office > Commercial Office
Legal Description	POR RO ACALANES
Legal Subdivision	ACALANES RHO
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	4
Census Block	4002
Census Tract	350000

Owner

3703 Mount Diablo Blvd, a commercial property, is owned by two individuals who bought it in April 2017.

Source: Contra Costa County records, as of July 14, 2026

Owner of Record	2 Individual Names on File
Mailing Address	14 STIRLING DR, DANVILLE, CA 94526-2921
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.

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 21, 2017 · Amount on File
Deed Sale	Apr 21, 2017 · Amount on File
Prior Sale	Dec 4, 2013 · Amount on File
Deed Document Number	201769378
Prior Transfer Date	Aug 31, 2004
Prior Transfer Doc	0000358868
Record Updated	Oct 29, 2026

April 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 21, 2017
Property Address	3703 MT DIABLO BLVD, LAFAYETTE, CA 94549-3538
Document Number	0000069378
Instrument Date	Apr 14, 2017
Instrument	2017-069378
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	14 STIRLING DR, DANVILLE, CA 94526-2921

Mortgage

Document Number	0000069379
Date	Apr 21, 2017
Instrument	2017-069379

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 3703 Mount Diablo Blvd was $22,445.

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		$1,894,071 (+2%) Land $591,897 Building $1,302,174
2025	$22,445.00	$1,856,934 Land $580,292 Building $1,276,642
2023	$21,746.00 (+1.35%)	$1,784,828 Land $557,759 Building $1,227,069
2022	$21,456.00

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

Flood

FEMA maps place 3703 Mount Diablo Blvd 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	4 in force
Nearby Flood Claims	6 (1983–1998)
Claims Outside the SFHA	4 of 6
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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 3703 Mount Diablo Blvd is moderate, ranking above 44% of the US, with a 0.07% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Moderate above 44% of the US · lower than 74% of California
Wildfire Likelihood	0.07% 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 275 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
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Etheric Networks, T-Mobile, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Mount Diablo Blvd

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures