Contra Costa County property record for 523 Thistle Cir, Martinez, CA 94553
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 2.5 ba · 1,430 sqft · built 1977 |
| Lot Size | 0.063 acres (2,730 sqft) |
| Owner | Individual Name on File |
| Last Sale | $675,000 (May 2026) |
| Tax Bill | $8,489 (2025) |
| Deeds & Mortgages | May 2026 Sale & Mortgage Jan 2026 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 154-603-029-5 |
| Primary APN | 154-603-029-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,430 sqft Living Area |
| 1st Floor Area | 715 sqft |
| Basement Area | 715 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Townhouse |
| Lot Area | 2,730 sqft (0.063 acres) |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 523 THISTLE CIR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-5816 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PUD |
| Legal Description | TRACT 4387 LOT 45 |
| Legal Subdivision | HEATHER HILL SUB 4387 |
| Legal Tract | 4387 |
| Legal Lot Number | 45 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 321102 |
523 Thistle Cir, a townhouse, is owned and occupied by an individual who bought it in May 2026.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 11, 2026 | Grant Deed, Transfer · VA Mortgage CMG MORTGAGE INC |
| Jan 28, 2026 | Intrafamily Transfer, Transfer |
| Mar 19, 2020 | Intrafamily Transfer, Transfer · Conventional Mortgage SHELL WESTERN STATES FCU |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 11, 2026 · Amount on File |
| Deed Sale | May 11, 2026 · Amount on File |
| Prior Sale | Dec 30, 2005 · Amount on File |
| Deed Document Number | 202648924 |
| Prior Transfer Date | Mar 12, 2020 |
| Prior Transfer Doc | 0000053309 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 11, 2026 |
| Property Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Document Number | 0000048924 |
| Instrument Date | May 5, 2026 |
| Instrument | 2026.48924 |
| Transaction Type | Transfer |
| Record Updated | May 20, 2026 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $74,992.50 |
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property |
| Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Investor | Possibly a Property Investor |
| Document Number | 0000048925, |
|---|---|
| Date | May 11, 2026 |
| Instrument | 2026..48925 |
| Name | CMG MORTGAGE INC |
|---|
| Type | VA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jun 1, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 6.38% |
| Initial Type | Adjustable Rate |
| Adjustable | Adjustable Rate Rider |
| Max Rate | -1% |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 28, 2026 |
| Property Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Document Number | 0000009073 |
| Map Reference | MB 158 PG 4 TO 6 |
| Instrument Date | Jan 27, 2026 |
| Instrument | 2026- 009073 |
| Transaction Type | Transfer |
| Record Updated | Feb 6, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 19, 2020 |
| Property Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Document Number | 0000053309 |
| Map Reference | MB 158 PG 4-6 |
| Instrument Date | Mar 12, 2020 |
| Instrument | 2020-053309 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 523 THISTLE CIR, MARTINEZ, CA 94553-5816 |
| Document Number | 0000053310 |
|---|---|
| Date | Mar 19, 2020 |
| Instrument | 2020-053310 |
| Name | SHELL WESTERN STATES FCU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2050 |
The 2025 property tax bill for 523 Thistle Cir was $8,489.
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 | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $645,000 (-5.13%) Land $388,946 Building $256,054 | |
| 2025 | $8,489.00 Homeowner's exemption | $679,858 Land $409,966 Building $269,892 |
| 2023 | $8,152.00 (+0.85%) Homeowner's exemption | $653,460 Land $394,048 Building $259,412 |
| 2022 | $8,083.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 523 Thistle Cir in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1982.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 2 (1982–1995) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Jan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows |
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 523 Thistle Cir is moderate, ranking above 52% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 52% of the US · lower than 69% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Direct burnable vegetation |
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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
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