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823 Shell Ave, Martinez, CA 94553 Property Records

Contra Costa County property record for 823 Shell Ave, Martinez, CA 94553 · Last verified July 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms3 Beds
Bathrooms1 Baths
Year BuiltBuilt 1970
Square Footage936 sqft Living Area
Lot Size4,750 sqft (0.109 acres)
OccupancyOwner Occupied
Last Sale$650,000 (2026)
Tax Bill$4,221.00 (2025)

Property Details

APN / Parcel Number

Primary APN375-131-003-2
Alternative APN
  • 375-131-003

Interior

Bedrooms3 Beds
Full Baths1 Baths
Total Rooms5 Rooms
Building Area936 sqft Living Area
1st Floor936 sqft 1st Floor
Stories1 Stories

Exterior

Year BuiltBuilt 1956
Effective Year BuiltEffective 1970
Lot Area4,750 sqft (0.109 acres)
Parking Spaces1 Parking Spaces
Garage TypeAttached Garage
Garage Area280 sqft Garage

Location & Zoning

Street Address823 SHELL AVE
CityMARTINEZ
StateCA
Zip94553-3324
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionMARTINEZ LAND #6 LOT 5 POR 4 & 6 BLK 40
Legal SubdivisionMARTINEZ LAND CO 06
Legal Tract6
Legal Block40
Legal Lot Number5
JurisdictionCONTRA COSTA CA
Minor Civil DivisionCENTRAL CONTRA COSTA
Census Blockgroup1
Census Block1010
Census Tract319002

Owner

Source: Contra Costa County records · APN 375-131-003-2

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 Address823 SHELL AVE, MARTINEZ, CA 94553-3324
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Jan 14, 2026Deed of Trust, Mortgage · Line of Credit
MUTUAL OF OMAHA MORTGAGE INC
Feb 17, 2026Grant Deed, Transfer · Conventional Mortgage
UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleFeb 17, 2026 · Amount on Record
Deed SaleFeb 17, 2026 · Amount on Record
Prior SaleAug 19, 2011 · Amount on Record
Deed Doc Number202615186
Prior Transfer DateAug 03, 2007
Prior Transfer Doc0000242950
Record RefreshedSep 20, 2026

January 2026: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address823 SHELL AVE, MARTINEZ, CA 94553-3324
Transaction TypeMortgage
Record UpdatedJun 08, 2026

Transferred To (Grantee/Buyer)

NameVerified Name
Address823 SHELL AVE, MARTINEZ, CA 94553-3324

Mortgage

Document Number0000004043
DateJan 14, 2026
Instrument2026- 004043
Lender
NameMUTUAL OF OMAHA MORTGAGE INC
TypeMortgage Company
Address610 W ASH ST STE 1505, SAN DIEGO, CA 92101
Agreement
TypeLine of Credit
AmountAmount Recorded
Term360 Months
DueJan 13, 2056
Interest
Change FrequencyMonthly (Revolving credit lines are monthly unless stated otherwise).

February 2026: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateFeb 17, 2026
Property Address823 SHELL AVE, MARTINEZ, CA 94553-3324
Document Number0000015186
Map ReferenceMB 14 PG 297
Instrument DateFeb 10, 2026
Instrument2026- 015186
Transaction TypeTransfer
Record UpdatedMar 06, 2026
Title CompanyFIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded Values by County
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenant/Joint Tenant w/ Right Of Survivorship
Address823 SHELL AVE, MARTINEZ, CA 94553-3324

Mortgage

Document Number0000015187
DateFeb 17, 2026
Instrument2026- 015187
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueMar 01, 2056

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
Unified School DistrictMartinez Unified School District (KG - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

YearTax BillAssessed Value
2026$278,641 (+2%) Land $156,295 Building $122,346
2025$4,221.00 (+7.73%) Homeowner's exemption$273,179 (+4.04%) Land $153,231 Building $119,948
2023$3,918.00 (+3.32%) Homeowner's exemption$262,574 Land $147,282 Building $115,292
2022$3,792.00

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