Contra Costa County property record for 853 Shell Ave, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 1 Baths |
| Year Built | Built 1956 |
| Square Footage | 936 sqft Living Area |
| Lot Size | 4,875 sqft (0.112 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $135,000 (1997) |
| Tax Bill | $3,611.00 (2025) |
| Primary APN | 375-131-008-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Baths |
| Total Rooms | 5 Rooms |
| Building Area | 936 sqft Living Area |
| 1st Floor | 936 sqft 1st Floor |
| Stories | 1 Stories |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Lot Area | 4,875 sqft (0.112 acres) |
| Depth X Width | 86 ft x 59 ft Depth x Width |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 590 sqft Garage |
| Heating System | Floor/Wall Furnace Heating |
|---|
| Street Address | 853 SHELL AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3324 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | MARTINEZ LAND #6 POR LOTS 11 & 12 BLK 40 |
| Legal Subdivision | MARTINEZ LAND COMPA |
| Legal Block | 40 |
| Legal Lot Number | 11,12 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 1 |
| Census Block | 1010 |
| Census Tract | 319002 |
Source: Contra Costa County records · APN 375-131-008-1
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 | Individual Name on File |
|---|---|
| Mailing Address | 853 SHELL AVE, MARTINEZ, CA 94553-3324 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Single Person or Individual |
| Date | Document |
|---|---|
| May 19, 2026 | Deed of Trust, Mortgage · Line of Credit FIRST TECHNOLOGY FEDERAL CREDIT UNION |
| Sep 10, 2021 | Deed of Trust, Mortgage · Conventional Mortgage NEWREZ LLC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Apr 29, 1997 · Amount on Record |
| Deed Sale | Apr 29, 1997 · Amount on Record |
| Prior Sale | Apr 29, 1997 |
| Deed Doc Number | 199769437 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 19, 2026 |
| Property Address | 853 SHELL AVE, MARTINEZ, CA 94553-3324 |
| Document Number | 0000051873 |
| Instrument Date | May 08, 2026 |
| Instrument | 202651873 |
| Transaction Type | Mortgage |
| Record Updated | Jul 12, 2026 |
| Title Company | WFT NATIONAL TITLE, WFG NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 853 SHELL AVE, MARTINEZ, CA 94553-3324 |
| Document Number | 0000051873, |
|---|---|
| Date | May 19, 2026 |
| Instrument | 202651873 |
| Name | FIRST TECHNOLOGY FEDERAL CREDIT UNION |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | May 25, 2056 |
| Rate | 6.37% |
|---|---|
| Max Rate | -1% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 853 SHELL AVE, MARTINEZ, CA 94553-3324 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Name | Verified Name |
|---|---|
| Address | 853 SHELL AVE, MARTINEZ, CA 94553-3324 |
| Document Number | 0000252877 |
|---|---|
| Date | Sep 10, 2021 |
| Instrument | 2021-252877 |
| Name | NEWREZ LLC |
|---|---|
| Type | Mortgage Company |
| Address | FORT WASHINGTON, PA 19034 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | Oct 01, 2036 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| 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 | $224,074 (+2%) Land $97,168 Building $126,906 | |
| 2025 | $3,611.00 (+7.92%) Homeowner's exemption | $219,681 (+4.04%) Land $95,263 Building $124,418 |
| 2023 | $3,346.00 (+3.62%) Homeowner's exemption | $211,153 Land $91,565 Building $119,588 |
| 2022 | $3,229.00 |
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