Contra Costa County property record for 531 Main St, #535, Martinez, CA 94553
| Property Type | Retail Stores (Personal Services, Photography, Travel) |
|---|---|
| Details | 19,380 sqft · built 1929 |
| Lot Size | 0.287 acres (12,500 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $1,350,000 (May 2026) |
| Tax Bill | $18,388 (2025) |
| Deeds & Mortgages | May 2026 Sale May 2025 Sale & Line of Credit + 1 more |
| Flood Zone | Zone AO (high risk) |
| APN | 373-223-003-6 |
| Primary APN | 373-223-003-6 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 19,380 sqft Gross Area |
| 1st Floor Area | 19,380 sqft |
| Year Built | Built 1929 |
|---|---|
| Effective Year Built | Effective 1929 |
| Exterior Material | Brick |
| Construction Type | Masonry / Concrete Block |
| Roof Type | Mansard |
| Roof Material | Tar & Gravel |
| Lot Area | 12,500 sqft (0.287 acres) |
| View / Lot | Corner |
| Heating System | HVAC |
|---|
| Street Address | 531 MAIN ST, 535 |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-1127 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Retail Stores (Personal Services, Photography, Travel) |
| Legal Description | ORIGINAL SURVEY LOT 8 POR 1,2 & 7 BLK 19 |
| Legal Subdivision | MARTINEZ |
| Legal Block | 19 |
| Legal Lot Number | 8 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1027 |
| Census Tract | 316000 |
531 Main St, #535 is owned by a company that bought it in May 2026.
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 801 MARIE AVE, MARTINEZ, CA 94553-3516 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Date | Document |
|---|---|
| May 11, 2026 | Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPAN |
| May 15, 2025 | Grant Deed, Transfer · Line of Credit HALL MORTGAGE FUND LP |
| Aug 31, 2017 | Deed of Trust, Mortgage · Commercial Mortgage WESTAMERICA BANK |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 11, 2026 · Amount on File |
| Deed Sale | May 11, 2026 · Amount on File |
| Prior Sale | May 15, 2025 · Amount on File |
| Deed Document Number | 202648962 |
| Prior Transfer Date | Jul 16, 1999 |
| Prior Transfer Doc | 0000202354 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 11, 2026 |
| Property Address | 531 MAIN ST, 535, MARTINEZ, CA 94553-1127 |
| Document Number | 0000048962 |
| Instrument Date | May 1, 2026 |
| Instrument | 202648962 |
| Transaction Type | Transfer |
| Record Updated | Aug 28, 2026 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE COMPAN |
| Amount | Amount on Record |
|---|---|
| Tax | $149,985.00 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Limited Liability Partnership |
| Address | 801 MARIE AVE, MARTINEZ, CA 94553-3516 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 15, 2025 |
| Property Address | 531 MAIN ST, MARTINEZ, CA 94553-1127 |
| Document Number | 0000048125 |
| Instrument Date | May 9, 2025 |
| Instrument | 2025- 048125 |
| Transaction Type | Transfer |
| Record Updated | Dec 19, 2025 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 837 ARNOLD DR STE 210, 210, MARTINEZ, CA 94553-6534 |
| Document Number | 0000048126 |
|---|---|
| Date | May 15, 2025 |
| Instrument | 2025- 048126 |
| Name | HALL MORTGAGE FUND LP |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Change Frequency | Monthly |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 531-535 MAIN ST # 535, 535, MARTINEZ, CA 94553 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | PLACER TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000160116 |
|---|---|
| Date | Aug 31, 2017 |
| Instrument | 2017-160116 |
| Name | WESTAMERICA BANK |
|---|---|
| Type | Bank |
| Address | SUISUN CITY, CA 94585 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2025 property tax bill for 531 Main St, #535 was $18,388.
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 | $1,836,000 (+37.97%) Land $540,600 Building $1,295,400 | |
| 2025 | $18,388.00 | $1,330,763 Land $391,872 Building $938,891 |
| 2023 | $16,379.00 (+3.11%) | $1,279,090 (+2%) Land $376,656 Building $902,434 |
| 2022 | $15,885.00 | $1,254,011 Land $369,271 Building $884,740 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 531 Main St, #535 in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AO high risk · sheet flow 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on File median of 42 policies |
| Nearby Flood Policies | 42 in force |
| Nearby Flood Claims | 20 (1982–2017) |
| Claims Outside the SFHA | 4 of 20 |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, And Mudslides |
| Claims by Event |
|
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.
Wildfire risk around 531 Main St, #535 is moderate, ranking above 46% of the US, with a 0.08% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 46% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Indirect within ember reach |
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 371 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Astound Broadband Fiber · Cable in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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