Contra Costa County property record for 775 Shell Ave, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Multi-Unit > Duplex |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 3.5 Baths |
| Year Built | Built 1956 |
| Square Footage | 5,290 sqft Living Area |
| Lot Size | 2.06 acres |
| Garage | Attached, 728 sqft |
| Last Sale | $1,250,000 (2023) |
| Tax Bill | $16,826.00 (2025) |
| Primary APN | 375-090-012-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 12 Rooms |
| Building Area | 5,290 sqft Living Area |
| 1st Floor | 2,908 sqft 1st Floor |
| Basement Area | 2,382 sqft Basement |
| Stories | 1 Stories |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1956 |
| Architectural Style | Duplex Single Style |
| Lot Area | 90,169 sqft |
| Parking Spaces | 3 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 728 sqft Garage |
| Street Address | 775 SHELL AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3229 |
| Property Usage | Residential Property Usage |
| Type | Residential > Multi-Unit > Duplex |
| Legal Description | PARCEL MAP 6 PG 45 PCL A |
| Legal Subdivision | PM 6 45 |
| Legal Tract | 6PM45 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 1 |
| Census Block | 1003 |
| Census Tract | 319002 |
Source: Contra Costa County records · APN 375-090-012-2
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 Record | Company Name on File |
|---|---|
| Mailing Address | 775 SHELL AVE, MARTINEZ, CA 94553-3229 |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Date | Document |
|---|---|
| Oct 20, 2023 | Intrafamily Transfer, Transfer |
| Jun 21, 2023 | Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Feb 18, 2020 | Affidavit of Death, Transfer NOT AVAILABLE |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jun 21, 2023 · Amount on Record |
| Deed Sale | Jun 21, 2023 · Amount on Record |
| Deed Doc Number | 202358623 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 20, 2023 |
| Property Address | 775 SHELL AVE, MARTINEZ, CA 94553-3229 |
| Document Number | 0000103563 |
| Map Reference | MB 6 PG 45 |
| Instrument Date | Oct 20, 2023 |
| Instrument | 2023-103563 |
| Transaction Type | Transfer |
| Record Updated | Oct 31, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 1500 LAUREL AVE, RICHMOND, CA 94805-1622 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 21, 2023 |
| Property Address | 775 SHELL AVE, MARTINEZ, CA 94553-3229 |
| Document Number | 0000058623 |
| Map Reference | MB 6 PG 45 |
| Instrument Date | Jun 12, 2023 |
| Instrument | 2023-058623 |
| Transaction Type | Transfer |
| Record Updated | Jun 29, 2023 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded Values by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property (Marital Community) with Rights of Survivorship |
| Address | 775 SHELL AVE, MARTINEZ, CA 94553-3229 |
| Document Number | 0000058624 |
|---|---|
| Date | Jun 21, 2023 |
| Instrument | 2023-058624 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jul 01, 2053 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 18, 2020 |
| Property Address | 775 SHELL AVE, MARTINEZ, CA 94553-3229 |
| Document Number | 0000030077 |
| Instrument Date | Feb 12, 2020 |
| Instrument | 30077 |
| Transaction Type | Transfer |
| Record Updated | Mar 04, 2020 |
| Title Company | NOT AVAILABLE |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 775 SHELL AVE MARTINEZ CA 945533229, MARTINEZ, CA 94553-3229 |
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 and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,326,510 (+2%) Land $530,604 Building $795,906 | |
| 2025 | $16,826.00 (+358.1%) | $1,300,500 (+580.99%) Land $520,200 Building $780,300 |
| 2023 | $3,673.00 (-0.7%) Homeowner's exemption | $190,971 (+2%) Land $77,734 Building $113,237 |
| 2022 | $3,699.00 Homeowner's exemption | $187,227 Land $76,210 Building $111,017 |
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