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3100 Oak Rd, Walnut Creek, CA 94597 Property Records

Contra Costa County property record for 3100 Oak Rd, Walnut Creek, CA 94597

Property Summary

Property TypeCommercial Office
Details50,000 sqft · built 1987
Lot Size1.23 acres (54,014 sqft)
OwnerCompany Name on Record
Last Sale$5,170,000 (Jun 2025)
Tax Bill$68,560 (2025)
Deeds & MortgagesNov 2021 Mortgage
Nov 2021 Sale
+ 1 more
Flood ZoneZone X (minimal risk)
APN148-202-057-3

Property Details

APN / Parcel Number

Primary APN148-202-057-3
Alternative APN
  • 148-202-057

Interior

Stories1 Story
Building Area50,000 sqft Gross Area
1st Floor Area50,000 sqft

Exterior

Year BuiltBuilt 1987
Effective Year BuiltEffective 1988
Lot Area54,014 sqft

Location & Zoning

Street Address3100 OAK RD, 140
CityWALNUT CREEK
StateCA
Zip94597-2078
Property CategoryCommercial
Property TypeCommercial > Office > Commercial Office
Local Zoning CodeP1
Legal DescriptionTRACT 2027 LOTS 38,39 PORS 37,40,41 & TR ADJ
Legal SubdivisionRANCHO LAS JUNTAS
Legal Tract2027
Legal Lot Number38,39
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group2
Census Block2000
Census Tract324003

Owner

Source: Contra Costa County records, as of July 15, 2026

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

Owner of RecordCompany Name on Record
Mailing Address50 MYRTLE AVE STE 209, 209, SOUTH SAN FRANCISCO, CA 94080
Owner TypeCompany
VestingLimited Liability Partnership

Deeds, Mortgages & Sale History

DateDocument
Nov 24, 2021Deed of Trust, Mortgage · Commercial Mortgage
PRIME FINANCE SHORT DURATION HOLDING COM
Nov 15, 2021Grant Deed, Transfer
OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY
Nov 16, 2017Grant Deed, Transfer · Commercial Mortgage
RIVER CITY BANK

Assessor's Deed Record

Deed NamesName on Deed
Last SaleJun 6, 2025 · Amount on Record
Deed SaleJun 6, 2025 · Amount on Record
Prior SaleNov 15, 2021 · Amount on Record
Deed Document Number202557468
Record UpdatedSep 20, 2026

November 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address3100 OAK RD, WALNUT CREEK, CA 94597-7746
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address44 MONTGOMERY ST 1910, 1910, SAN FRANCISCO, CA 94104-4706

Mortgage

Document Number0000324239
DateNov 24, 2021
Instrument2021-324239
Lender
NamePRIME FINANCE SHORT DURATION HOLDING COM
TypeNon-Lending Institution
AddressCHICAGO, IL 60606
Agreement
TypeCommercial Mortgage
AmountAmount Recorded

November 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 15, 2021
Property Address3100 OAK RD, WALNUT CREEK, CA 94597-7746
Document Number0000316470
Map ReferenceMB 56 PG 5
Instrument DateNov 12, 2021
Instrument2021-316470
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address44 MONTGOMERY ST STE 1910, 1910, SAN FRANCISCO, CA 94104-4706

November 2017: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 16, 2017
Property Address3100 OAK RD, WALNUT CREEK, CA 94597-7746
Document Number0000216214
Map ReferenceMB56 PG5
Instrument DateNov 16, 2017
Instrument2017-216214
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address644 MENLO AVE STE 204, 204, MENLO PARK, CA 94025-4742
Mail Care OfLANE PARTNERS LLC

Mortgage

Document Number0000216215
DateNov 16, 2017
Instrument2017-216215
Lender
NameRIVER CITY BANK
TypeBank
Agreement
TypeCommercial Mortgage
AmountAmount Recorded
Interest
Rate TypeAdjustable Rate

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
Unified School DistrictMount Diablo Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$5,273,400 (-41.01%) Land $2,550,000 Building $2,723,400
2025$68,560.00 (-42.88%)$8,940,000 (-7.74%) Land $2,973,700 Building $5,966,300
2023$120,030.00 (-1.38%)$9,690,000 Land $3,223,200 Building $6,466,800
2022$121,711.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

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

Wildfire

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

Wildfire RiskNot rated
no burnable land within 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 SystemCONTRA COSTA WATER DISTRICT
serves 210,500 people · EPA ID CA0710003
Water SourceSurface water
Last State InspectionJan 2022
LeadUnder 1 ppb (2026–2028)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 368 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless, DSL in parts of the area		5,000 / 5,000
Xfinity
Cable · Fiber in parts of the area		2,000 / 250
Astound Broadband
Cable · Fiber in parts of the area		1,500 / 50
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
T-Mobile
Fixed Wireless		100 / 20

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