Contra Costa County property record for 270 H St, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,816 sqft · built 1940 |
| Lot Size | 0.109 acres (4,725 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $335,000 (Oct 2013) |
| Tax Bill | $5,637 (2025) |
| Deeds & Mortgages | Sep 2026 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 370-093-007 |
| Primary APN | 370-093-007 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,816 sqft Living Area |
| 1st Floor Area | 1,032 sqft |
| Basement Area | 784 sqft |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1940 |
| Lot Area | 4,725 sqft (0.109 acres) |
| Lot Dimensions | 80 ft deep x 57 ft wide |
| Garage Type | Attached |
| Garage Area | 238 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Forced Air with A/C |
|---|
| Street Address | 270 H ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3709 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | ALTA LOMA LOT 23 |
| Legal Subdivision | ALTA LOMA |
| Legal Lot Number | 23 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2017 |
| Census Tract | 318000 |
Source: Contra Costa County records, as of October 13, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 4110 CANYON WAY, MARTINEZ, CA 94553-3722 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 10, 2013 · Amount on Record |
| Deed Sale | Oct 10, 2013 · Amount on Record |
| Deed Document Number | 2013241725 |
| Prior Transfer Date | Jun 21, 1999 |
| Prior Transfer Doc | 0000170600 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 28, 2026 |
| Property Address | 270 H ST, MARTINEZ, CA 94553-3709 |
| Document Number | 0000101753 |
| Instrument Date | Sep 21, 2026 |
| Instrument | 2026101753 |
| Transaction Type | Transfer |
| Record Updated | Oct 5, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 4110 CANYON WAY, MARTINEZ, CA 94553-3722 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $406,361 (+2%) Land $275,077 Building $131,284 | |
| 2025 | $5,637.00 (+6.48%) | $398,394 (+4.04%) Land $269,684 Building $128,710 |
| 2023 | $5,294.00 (+1.59%) | $382,926 Land $259,213 Building $123,713 |
| 2022 | $5,211.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AO, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 3 in force |
| Nearby Flood Claims | 5 (1982–2017) |
| Claims Outside the SFHA | 4 of 5 |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 74% of the US · above 49% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF MARTINEZ serves 31,015 people · EPA ID CA0710006 |
|---|---|
| Water Source | Purchased surface water from CONTRA COSTA WATER DISTRICT |
| Last State Inspection | Oct 2025 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 335 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
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