Contra Costa County property record for 3640 Serrano St, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1944 |
| Square Footage | 1,704 sqft Living Area |
| Lot Size | 9,000 sqft (0.207 acres) |
| Garage | Attached, 302 sqft |
| Tax Bill | $5,119.00 (2025) |
Source: Contra Costa County records · APN 370-094-022-8
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 | 68-1845 WAIKOLOA RD, 106, WAIKOLOA, HI 96738-5579 |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Date | Document |
|---|---|
| Feb 27, 2020 | Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Jan 29, 2021 | Deed of Trust, Mortgage · Conventional Mortgage NEWREZ LLC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | May 07, 1998 |
| Transfer Doc | 0000101723 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 3640 SERRANO ST, MARTINEZ, CA 94553-3751 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | FIRST AMERICAN TITLE CO |
| Name | Verified Name |
|---|
| Document Number | 0000037331 |
|---|---|
| Date | Feb 27, 2020 |
| Instrument | 2020-037331 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Address | PONTIAC, MI 48341 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Mar 01, 2050 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 3640 SERRANO ST, MARTINEZ, CA 94553-3751 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | FIRST AMERICAN TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 923 CAROL LN, LAFAYETTE, CA 94549-4714 |
| Document Number | 0000028487 |
|---|---|
| Date | Jan 29, 2021 |
| Instrument | 2021-028487 |
| Name | NEWREZ LLC |
|---|---|
| Type | Non-Lending Institution |
| Address | FORT WASHINGTON, PA 19034 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 01, 2051 |
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 | $360,730 (+2%) Land $143,060 Building $217,670 | |
| 2025 | $5,119.00 (+6.47%) | $353,657 (+4.04%) Land $140,255 Building $213,402 |
| 2023 | $4,808.00 (+1.56%) | $339,925 Land $134,809 Building $205,116 |
| 2022 | $4,734.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | High above 74% of the US · above 50% of California |
|---|---|
| Wildfire Likelihood | About 1 in 248 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values are read at the parcel center point; lenders make the official flood determination.
| Primary APN | 370-094-022-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,704 sqft Living Area |
| 1st Floor | 1,143 sqft 1st Floor |
| Basement Area | 561 sqft Basement |
| Stories | 1 Stories |
| Year Built | Built 1941 |
|---|---|
| Effective Year Built | Effective 1944 |
| Lot Area | 9,000 sqft (0.207 acres) |
| Parking Spaces | 1 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 302 sqft Garage |
| Street Address | 3640 SERRANO ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3751 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | ALTA LOMA LOT 42 POR 41 |
| Legal Subdivision | ALTA LOMA |
| Legal Lot Number | 42 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 2 |
| Census Block | 2016 |
| Census Tract | 318000 |
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