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381 Hartz Ave, Danville, CA 94526 Property Records

Contra Costa County property record for 381 Hartz Ave, Danville, CA 94526 · Last verified July 2026

Property Summary

Property TypeCommercial Office
Details8,959 sqft · built 1980
Lot Size0.282 acres (12,283 sqft)
Owner2 Company Names on File
Tax Bill$16,479 (2025)
Deeds & MortgagesMar 2024 Second Mortgage
Sep 2019 Mortgage
+ 2 more
Flood ZoneZone X (minimal risk)
APN199-350-023-8

Property Details

APN / Parcel Number

Primary APN199-350-023-8
Alternative APN
  • 199-350-023

Interior

Stories1 Story
Building Area8,959 sqft Gross Area
1st Floor Area8,959 sqft

Exterior

Year BuiltBuilt 1980
Effective Year BuiltEffective 1981
Lot Area12,283 sqft (0.282 acres)

Location & Zoning

Street Address381 HARTZ AVE, 395
CityDANVILLE
StateCA
Zip94526-3559
Property CategoryCommercial
Property TypeCommercial > Office > Commercial Office
Legal DescriptionPOR RO SAN RAMON
Legal SubdivisionSAN RAMON RHO
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group3
Census Block3009
Census Tract345203

Owner

Source: Contra Costa County records · APN 199-350-023-8

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 AddressPO BOX 982, EL CERRITO, CA 94530-0982
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Mar 15, 2024Deed of Trust, Mortgage · Stand-Alone Second Mortgage
HERITAGE BANK OF COMMERCE
Sep 13, 2019Quit Claim Deed, Transfer
BYPASS JAMES B K W TRUST (PT)
Sep 13, 2019Affidavit of Death, Transfer
NOT AVAILABLE
Sep 13, 2019Affidavit of Death, Transfer
NOT AVAILABLE

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last Transfer DateAug 19, 2019
Transfer Doc0000151577
Record UpdatedSep 20, 2026

March 2024: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address381 HARTZ AVE, DANVILLE, CA 94526-3559
Transaction TypeMortgage
Record UpdatedDec 19, 2025
Title CompanyCHICAGO TITLE INSURANCE SERVICES, CHICAGO TITLE NATL COM SVCS

Transferred To (Grantee/Buyer)

NameVerified Name
Address1323 LINDA VISTA DR, EL CERRITO, CA 94530-2503

Mortgage

Document Number0000024443
DateMar 15, 2024
Instrument2024-024443
Lender
NameHERITAGE BANK OF COMMERCE
TypeBank
AddressSAN JOSE, CA 95110
Agreement
TypeStand-Alone Second Mortgage
AmountAmount Recorded

September 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateSep 13, 2019
Property Address381 HARTZ AVE # 395, 395, DANVILLE, CA 94526-3559
Document Number0000151577
Instrument DateAug 19, 2019
Instrument151577
Transaction TypeTransfer
Record UpdatedOct 04, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
AddressPO BOX 982 EL CERRITO CA 945300982, EL CERRITO, CA 94530-0982

Mortgage

Document Number151578
DateSep 13, 2019
Instrument151578
Lender
NameBYPASS JAMES B K W TRUST (PT)
AddressPO BOX 982, EL CERRITO, CA 94530-0982
Agreement
AmountAmount Recorded

September 2019: Affidavit of Death, Transfer

Document TypeAffidavit of Death
JurisdictionCONTRA COSTA CA
Recording DateSep 13, 2019
Property Address381 HARTZ AVE # 395, 395, DANVILLE, CA 94526-3559
Document Number0000151575
Instrument DateNov 30, 2018
Instrument151575
Transaction TypeTransfer
Record UpdatedOct 04, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
Address115 HARTZ AVE DANVILLE CA 945263325, DANVILLE, CA 94526-3325

September 2019: Affidavit of Death, Transfer

Document TypeAffidavit of Death
JurisdictionCONTRA COSTA CA
Recording DateSep 13, 2019
Property Address381 HARTZ AVE # 395, 395, DANVILLE, CA 94526-3559
Document Number0000151576
Instrument DateNov 30, 2018
Instrument151576
Transaction TypeTransfer
Record UpdatedOct 04, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
AddressPO BOX 982 EL CERRITO CA 945300982, EL CERRITO, CA 94530-0982

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
MunicipalityDanville Town
Unified School DistrictSan Ramon Valley Unified School District (KG - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$1,383,164 (+2%) Land $212,066 Building $1,171,098
2025$16,479.00 (+7.71%)$1,356,044 (+4.04%) Land $207,908 Building $1,148,136
2023$15,299.00 (+0.47%)$1,303,389 (+2%) Land $199,836 Building $1,103,553
2022$15,227.00$1,277,833 Land $195,918 Building $1,081,915

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133452033, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Policies5 in force

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
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, availability as of December 31, 2025 · Published October 2026 · based on 398 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
XfinityCable2,000 / 2,000
UnwiredFixed Wireless300 / 25
VerizonFixed Wireless300 / 20
AT&TFixed Wireless100 / 20
T-Mobile USAFixed Wireless100 / 20
AT&TDSL100 / 20

May also be available at this address: AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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