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631 Walnut Ave, Martinez, CA 94553 Property Records

Contra Costa County property record for 631 Walnut Ave, Martinez, CA 94553 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,593 sqft · built 1941
Lot Size0.231 acres (10,075 sqft)
Owner2 Individual Names on File
Last Sale$217,500 (Aug 1997)
Tax Bill$4,243 (2025)
Deeds & MortgagesSep 2019 Mortgage
Jan 2020 Mortgage
+ 1 more
Flood ZoneZone AO (high risk)
APN370-291-006-2

Property Details

APN / Parcel Number

Primary APN370-291-006-2
Alternative APN
  • 370-291-006

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms6 Rooms
Stories1 Story
Building Area1,593 sqft Living Area
1st Floor Area1,593 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1941
Effective Year BuiltEffective 1941
Architectural StyleRanch
Exterior MaterialWood Siding
Roof MaterialWood Shingle
Lot Area10,075 sqft (0.231 acres)
Garage TypeAttached
Garage Area230 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Heating SystemFloor/Wall Furnace
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address631 WALNUT AVE
CityMARTINEZ
StateCA
Zip94553-3963
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionALHAMBRA VALLEY GARDEN #1 LOT 5
Legal SubdivisionALHAMBRA VLY GARDEN 01
Legal Lot Number5
JurisdictionCONTRA COSTA CA
Township / Civil DivisionCENTRAL CONTRA COSTA
Census Block Group1
Census Block1006
Census Tract319001

Owner

Source: Contra Costa County records · APN 370-291-006-2

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 Individual Names on File
Mailing Address631 WALNUT AVE, MARTINEZ, CA 94553-3963
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Sep 27, 2019Deed of Trust, Mortgage · VA Mortgage
NATIONAL BANK OF KANSAS CITY
Jan 21, 2020Deed of Trust, Mortgage · VA Mortgage
FREEDOM MORTGAGE CORP
Mar 02, 2021Deed of Trust, Mortgage · VA Mortgage
FREEDOM MORTGAGE CORP

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleAug 05, 1997 · Amount on Record
Deed SaleAug 05, 1997 · Amount on Record
Deed Document Number1997139766
Record UpdatedSep 20, 2026

September 2019: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address631 WALNUT AVE, MARTINEZ, CA 94553-3963
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanySOLIDIFI TITLE AND CLOSING

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000161978
DateSep 27, 2019
Instrument2019-161978
Lender
NameNATIONAL BANK OF KANSAS CITY
TypeBank
AddressKANSAS CITY, MO 64114
Agreement
TypeVA Mortgage
AmountAmount Recorded
Term355 Months
DueApr 01, 2049

January 2020: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address631 WALNUT AVE, MARTINEZ, CA 94553-3963
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyTITLE365

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000011429
DateJan 21, 2020
Instrument2020-011429
Lender
NameFREEDOM MORTGAGE CORP
TypeSubprime Lender
AddressMOUNT LAUREL, NJ 08054
Agreement
TypeVA Mortgage
AmountAmount Recorded
Term353 Months
DueJun 01, 2049

March 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address631 WALNUT AVE, MARTINEZ, CA 94553-3963
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyTITLE CONNECT INC

Transferred To (Grantee/Buyer)

NameVerified Name
Address631 WALNUT AVE, MARTINEZ, CA 94553-3963

Mortgage

Document Number0000062151
DateMar 02, 2021
Instrument2021-062151
Lender
NameFREEDOM MORTGAGE CORP
TypeSubprime Lender
AddressMOUNT LAUREL, NJ 08054
Agreement
TypeVA Mortgage
AmountAmount Recorded
Term341 Months
DueAug 01, 2049

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
MunicipalityMartinez City
Unified School DistrictMartinez 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$357,293 (+2%) Land $146,570 Building $210,723
2025$4,243.00 (+6.23%) Homeowner's exemption$350,289 (+4.04%) Land $143,697 Building $206,592
2023$3,994.00 (+1.71%) Homeowner's exemption$336,689 Land $138,118 Building $198,571
2022$3,927.00

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 060133190011, 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 AO
sheet flow 1–3 ft
Special Flood Hazard AreaYes
Flood HazardHigh
100-Year FloodplainYes
1% annual chance
FloodwayNo
Base Flood ElevationVaries along the reach; see FIRM
Flood Insurance RequirementRequired (federally backed mortgages)
Flood Insurance CostPremium on Record
median of 38 individual NFIP policies nearby
Nearby Flood Policies38 in force
Nearby Flood Claims1 (2023)
Most Recent ClaimJan 2023, other causes, Severe Winter Storms, Flooding, Landslides, And Mudslides

Wildfire

Wildfire RiskModerate
above 44% of the US · above 26% of California
Wildfire LikelihoodAbout 1 in 1,471 per year
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 212 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
XfinityCable2,000 / 250
AT&TFixed Wireless100 / 20
AT&TDSL100 / 20

May also be available at this address: Unwired, Radiate Holdings, Verizon, T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G and 4G LTE

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