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3445 Mount Diablo Blvd, Lafayette, CA 94549 Property Records

Contra Costa County property record for 3445 Mount Diablo Blvd, Lafayette, CA 94549 · Last verified July 2026

Property Highlights

Property TypeCommercial > Office > Commercial Office
Year BuiltBuilt 1979
Square Footage2,564 sqft Gross Area
Lot Size5,280 sqft (0.121 acres)
Tax Bill$14,742.00 (2025)

Owner

Source: Contra Costa County records · APN 233-052-003-8

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 Record2 Company Names on File
Mailing Address3445 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911
Owner TypeOwner is a Company
VestingOwner is a Trust, Trust

Deeds, Mortgages & Sale History

DateDocument
Mar 03, 2021Intrafamily Transfer, Transfer
Jan 27, 2021Quit Claim Deed, Transfer
TITLE SERVICE AND LIAISON COMPANIES, SIMPLIFILE LC E-RECORDING
Mar 04, 2021Grant Deed, Transfer
Feb 12, 2018Quit Claim Deed, Transfer
Quitclaim Document

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleSep 03, 2003
Deed SaleSep 03, 2003
Deed Doc Number2003437272
Last Transfer DateDec 23, 2020
Transfer Doc0000026236
Record RefreshedSep 20, 2026

March 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateMar 03, 2021
Property Address3445 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911
Document Number0000064678
Map ReferenceMB 12 PG 266
Instrument DateFeb 10, 2021
Instrument2021-064678
Transaction TypeTransfer
Record UpdatedNov 03, 2022

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address3447 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911

January 2021: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateJan 27, 2021
Property Address3445 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911
Document Number0000026236
Instrument DateDec 23, 2020
Instrument26236
Transaction TypeTransfer
Record UpdatedFeb 08, 2021
Title CompanyTITLE SERVICE AND LIAISON COMPANIES, SIMPLIFILE LC E-RECORDING

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • Interfamily Transfer
  • Partial Interest

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address3447 MT DIABLO BLVD LAFAYETTE CA 945493911, LAFAYETTE, CA 94549-3911

March 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 04, 2021
Property Address3445 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911
Document Number0000065680
Map ReferenceMB 12 PG 266
Instrument DateDec 23, 2020
Instrument2021-065680
Transaction TypeTransfer
Record UpdatedNov 03, 2022

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name
Address3447 MT DIABLO BLVD, 3447, LAFAYETTE, CA 94549-3911

Transferred To (Grantee/Buyer)

NameVerified Name

February 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateFeb 12, 2018
Property Address3445 MT DIABLO BLVD, LAFAYETTE, CA 94549-3911
Document Number0000022076
Instrument DateJan 30, 2018
Instrument22076
Transaction TypeTransfer
Record UpdatedFeb 15, 2018

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address3445 MT DIABLO BLVD LAFAYETTE CA 945493911, LAFAYETTE, CA 94549-3911

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityLafayette City
Secondary School DistrictAcalanes Union High School District (09 - 12)
Elementary School DistrictLafayette Elementary School District (KG - 08)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$1,140,000 (+1.33%) Land $443,900 Building $696,100
2025$14,742.00 (+4.71%)$1,125,000 (+6.03%) Land $438,100 Building $686,900
2023$14,079.00 (+1.24%)$1,061,000 Land $413,100 Building $647,900
2022$13,906.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020

Flood

FEMA Flood ZoneZone X
Flood HazardMinimal
500-Year FloodplainNo
Special Flood Hazard AreaNo
Nearest Special Flood Hazard AreaZone AE, within 500 ft

Wildfire

Wildfire RiskLow
above 20% of the US · 11th in California
Wildfire LikelihoodAbout 1 in 3,448 per year
ExposureIndirect
within ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Property Details

APN / Parcel Number

Primary APN233-052-003-8
Alternative APN
  • 233-052-003

Interior

Building Area2,564 sqft Gross Area
1st Floor2,564 sqft 1st Floor
Stories1 Stories

Exterior

Year BuiltBuilt 1978
Effective Year BuiltEffective 1979
Lot Area5,280 sqft (0.121 acres)

Location & Zoning

Street Address3445 MT DIABLO BLVD
CityLAFAYETTE
StateCA
Zip94549-3911
Property UsageCommercial Property Usage
TypeCommercial > Office > Commercial Office
Legal DescriptionLAF HOMESITES POR LOTS 40 & 41 BLK 12
Legal SubdivisionLAFAYETTE HOMESITES MAP 01
Legal Block12
Legal Lot Number40,41
JurisdictionCONTRA COSTA CA
Minor Civil DivisionCENTRAL CONTRA COSTA
Census Blockgroup3
Census Block3004
Census Tract349000

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