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840 Oak Grove Rd, Concord, CA 94518 Property Records

Contra Costa County property record for 840 Oak Grove Rd, Concord, CA 94518

Property Summary

Property TypeMedical Building
Details4,336 sqft · built 1983
Lot Size0.505 acres (22,010 sqft)
OwnerIndividual Name on File
Last Sale$600,000 (Dec 1999)
Tax Bill$11,750 (2025)
Deeds & MortgagesOct 2020 Transfer
Flood ZoneZone X (minimal risk)
APN129-291-032-8

Property Details

APN / Parcel Number

Primary APN129-291-032-8
Alternative APN
  • 129-291-032

Interior

Total Rooms2 Rooms
Stories1 Story
Building Area4,336 sqft Gross Area
1st Floor Area4,336 sqft

Exterior

Year BuiltBuilt 1983
Effective Year BuiltEffective 1983
Lot Area22,010 sqft (0.505 acres)

Location & Zoning

Street Address840 OAK GROVE RD
CityCONCORD
StateCA
Zip94518-3503
Property CategoryCommercial
Property TypeCommercial > Office > Medical Building
Legal DescriptionFRANDSENS SUBN POR LOT 4 & TR ADJ EX MR
Legal SubdivisionFRANDSENS SUB
Legal Lot Number4
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group4
Census Block4003
Census Tract337202

Owner

840 Oak Grove Rd, a commercial property, is owned by an individual who acquired it in September 2020.

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

Owner of RecordIndividual Name on File
Mailing Address840 OAK GROVE RD, CONCORD, CA 94518-3503
Owner TypeIndividual
VestingSole Owner

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 NamesName on Deed
Last SaleDec 15, 1999 · Amount on File
Deed SaleDec 15, 1999 · Amount on File
Deed Document Number1999322454
Last Transfer DateSep 19, 2020
Transfer Doc0000254466
Record UpdatedOct 29, 2026

October 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateOct 28, 2020
Property Address840 OAK GROVE RD, CONCORD, CA 94518-3503
Document Number0000254466
Instrument DateSep 19, 2020
Instrument254466
Transaction TypeTransfer
Record UpdatedNov 9, 2020
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address1664 LILAC DR WALNUT CREEK CA 945951739, WALNUT CREEK, CA 94595-1739

Tax Assessment & Valuation

The 2025 property tax bill for 840 Oak Grove Rd was $11,750.

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

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$954,725 (+1.87%) Land $485,983 Building $468,742
2025$11,750.00$937,161 Land $476,454 Building $460,707
2023$11,264.00 (+1.19%)$899,563 Land $457,953 Building $441,610
2022$11,131.00

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

Flood

FEMA maps place 840 Oak Grove Rd in Zone X, an area of minimal flood risk.

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

The area around 840 Oak Grove Rd has no burnable land within ember reach, so its wildfire risk is not rated.

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 499 locations within half a mile, as of December 31, 2025

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

May also be available: Verizon.

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