Contra Costa County property record for 820 Shell Ave, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1975 |
| Square Footage | 1,722 sqft Living Area |
| Lot Size | 7,405 sqft (0.17 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $750,000 (2021) |
| Tax Bill | $10,472.00 (2025) |
| Primary APN | 375-100-026 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Building Area | 1,722 sqft Living Area |
| Gross Area | 2,122 sqft Gross Area |
| 1st Floor | 1,502 sqft 1st Floor |
| Basement Area | 220 sqft Basement |
| Stories | 1 Stories |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Contemporary Style |
| Exterior Material | Stucco Exterior |
| Roof Material | Composition Shingle Roof |
| Lot Area | 7,405 sqft (0.17 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 400 sqft Garage |
| Heating System | Forced Air with Air Conditioning Heating |
|---|---|
| Heating Fuel | Gas Heating Fuel |
| Sewage | Municipal Sewage |
| Water Source | Commercial Water Source |
| Street Address | 820 SHELL AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3325 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | POR RO LAS JUNTAS |
| Legal Subdivision | RANCHO LAS JUNTAS |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3016 |
| Census Tract | 319002 |
Source: Contra Costa County records · APN 375-100-026
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 Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 820 SHELL AVE, MARTINEZ, CA 94553-3325 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Sep 07, 2021 | Special Warranty Deed, Transfer · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Dec 21, 2017 | Grant Deed, Transfer NORTH AMERICAN TITLE |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Sep 07, 2021 · Amount on Record |
| Deed Sale | Sep 07, 2021 · Amount on Record |
| Prior Sale | Dec 21, 2017 · Amount on Record |
| Deed Doc Number | 2021249495 |
| Prior Transfer Date | Feb 17, 2016 |
| Prior Transfer Doc | 0000051615 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Special Warranty Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 07, 2021 |
| Property Address | 820 SHELL AVE, MARTINEZ, CA 94553-3325 |
| Document Number | 0000249495 |
| Instrument Date | Aug 10, 2021 |
| Instrument | 2021-249495 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | TRICO TITLE COMPANY, TICOR TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 9054 1215 S CLARK STREET, 9054 1215, ARLINGTON, VA 22202 |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 820 SHELL AVE, MARTINEZ, CA 94553-3325 |
| Document Number | 0000249496 |
|---|---|
| Date | Sep 07, 2021 |
| Instrument | 2021-249496 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 01, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 21, 2017 |
| Property Address | 820 SHELL AVE, MARTINEZ, CA 94553-3325 |
| Document Number | 0000239553 |
| Instrument Date | Dec 15, 2017 |
| Instrument | 239553 |
| Transaction Type | Transfer |
| Record Updated | Jan 03, 2018 |
| Title Company | NORTH AMERICAN TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $563.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 820 SHELL AVE MARTINEZ CA 945533325, MARTINEZ, CA 94553-3325 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $811,822 (+2%) Land $487,093 Building $324,729 | |
| 2025 | $10,472.00 (+6.93%) Homeowner's exemption | $795,905 (+4.04%) Land $477,543 Building $318,362 |
| 2023 | $9,793.00 (+1.51%) Homeowner's exemption | $765,000 Land $459,000 Building $306,000 |
| 2022 | $9,647.00 |
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