3746 Mount Diablo Blvd, Lafayette, CA 94549 Property Records

Contra Costa County property record for 3746 Mount Diablo Blvd, Lafayette, CA 94549

Property Summary

Property Type	Commercial Office
Details	6,744 sqft · built 1978
Lot Size	1.53 acres (66,864 sqft)
Owner	Company Name on File
Last Sale	$9,898,000 (Jan 2018)
Tax Bill	$96,111 (2025)
Deeds & Mortgages	Feb 2023 Mortgage Apr 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`241-010-047-9`

Property Details

APN / Parcel Number

Primary APN	`241-010-047-9`
Alternative APN	`241-010-047`

Interior

Stories	1 Story
Building Area	6,744 sqft Gross Area
1st Floor Area	6,744 sqft

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1980
Lot Area	66,864 sqft

Location & Zoning

Street Address	3746 MT DIABLO BLVD
City	LAFAYETTE
State	CA
Zip	94549-3680
Property Category	Commercial
Property Type	Commercial > Office > Commercial Office
Legal Description	POR RO ACALANES
Legal Subdivision	RANCHO ACALANES
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	4
Census Block	4000
Census Tract	350000

Owner

3746 Mount Diablo Blvd, a commercial property, is owned by a company that acquired it in February 2023.

Source: Contra Costa County records, as of October 12, 2026

Owner of Record	Company Name on File
Mailing Address	3736 MT DIABLO BLVD, LAFAYETTE, CA 94549-3679
Owner Type	Company
Vesting	Limited Liability Company

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

Date	Document
Feb 24, 2023	Intrafamily Transfer, Transfer · Commercial Mortgage BANK OF AMERICA NA
Apr 19, 2021	Deed of Trust, Mortgage · Commercial Mortgage WHITNEY BANK
Jan 24, 2018	Grant Deed, Transfer WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jan 24, 2018 · Amount on File
Deed Sale	Jan 24, 2018 · Amount on File
Deed Document Number	201811248
Last Transfer Date	Feb 15, 2023
Transfer Doc	0000017047
Record Updated	Oct 29, 2026

February 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 24, 2023
Property Address	3746 MT DIABLO BLVD, LAFAYETTE, CA 94549-3680
Document Number	0000017047
Instrument Date	Feb 15, 2023
Instrument	2023-017047
Transaction Type	Transfer
Record Updated	Mar 7, 2023
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3736 MT DIABLO BLVD STE 200, 200, LAFAYETTE, CA 94549-3623

Mortgage

Document Number	0000017048
Date	Feb 24, 2023
Instrument	2023-017048

Lender

Name	BANK OF AMERICA NA
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount on Record

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	3746 MT DIABLO BLVD, LAFAYETTE, CA 94549-3680
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	FIDELITY NATIONAL TTL GROUP

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	PO BOX 3429, EL SEGUNDO, CA 90245-8590

Mortgage

Document Number	0000116558
Date	Apr 19, 2021
Instrument	2021-116558

Lender

Name	WHITNEY BANK
Type	Bank
Address	HOUSTON, TX 77098

Agreement

Type	Commercial Mortgage
Amount	Amount on Record
Term	40 Months
Due	Aug 8, 2024

January 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 24, 2018
Property Address	3746 MT DIABLO BLVD, LAFAYETTE, CA 94549-3680
Document Number	0000011248
Instrument Date	Jan 17, 2018
Instrument	2018-011248
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	CHICAGO TITLE SIMPLIFILE

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 Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000011249
Date	Jan 24, 2018
Instrument	2018-011249

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 3746 Mount Diablo Blvd was $96,111.

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		$8,671,891 (+2%) Land $3,957,595 Building $4,714,296
2025	$96,111.00	$8,501,855 Land $3,879,996 Building $4,621,859
2023	$94,946.00 (-0.01%)	$8,171,720 Land $3,729,332 Building $4,442,388
2022	$94,957.00

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

Flood

FEMA maps place 3746 Mount Diablo Blvd in Zone X, an area of minimal flood risk, though there have been 6 flood claims nearby since 1983.

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
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 3746 Mount Diablo Blvd 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 67% of the US · lower than 81% 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.

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 138 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
Starlink Satellite	280 / 30
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Etheric Networks, Verizon.

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