Contra Costa County property record for 4923 Thatcher Dr, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,816 sqft · built 1989 |
| Lot Size | 0.092 acres (4,000 sqft) |
| Owner | Company Name on File |
| Last Sale | $420,000 (Nov 2003) |
| Tax Bill | $7,885 (2025) |
| Deeds & Mortgages | Dec 2022 Transfer May 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 161-420-087-9 |
| Primary APN | 161-420-087-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,816 sqft Living Area |
| 1st Floor Area | 858 sqft |
| 2nd Floor Area | 958 sqft |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Cluster |
| Lot Area | 4,000 sqft (0.092 acres) |
| Garage Type | Attached |
| Garage Area | 434 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 4923 THATCHER DR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4380 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T6842 L40 |
| Legal Subdivision | SUBDIVISION 6842 |
| Legal Tract | 6842 |
| Legal Lot Number | 40 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4015 |
| Census Tract | 320004 |
Source: Contra Costa County records · APN 161-420-087-9
Assessment roll updated July 14, 2026 · Last verified August 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 | 4923 THATCHER DR, MARTINEZ, CA 94553-4380 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Dec 02, 2022 | Intrafamily Transfer, Transfer |
| May 13, 2020 | Deed of Trust, Mortgage · Conventional Mortgage PENNYMAC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Nov 12, 2003 · Amount on Record |
| Deed Sale | Nov 12, 2003 · Amount on Record |
| Prior Sale | Jul 29, 1994 · Amount on Record |
| Deed Document Number | 2003553385 |
| Last Transfer Date | Dec 01, 2022 |
| Transfer Doc | 0000180155 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 02, 2022 |
| Property Address | 4923 THATCHER DR, MARTINEZ, CA 94553-4380 |
| Document Number | 0000180155 |
| Map Reference | MB 317 PG 26 |
| Instrument Date | Dec 01, 2022 |
| Instrument | 2022-180155 |
| Transaction Type | Transfer |
| Record Updated | Jun 07, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 4923 THATCHER DR, MARTINEZ, CA 94553-4380 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4923 THATCHER DR, MARTINEZ, CA 94553-4380 |
| Document Number | 0000107573 |
| Instrument Date | May 13, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Jun 17, 2020 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|---|
| Address | 4923 THATCHER DR MARTINEZ CA 945534380, MARTINEZ, CA 94553-4380 |
| Document Number | 0000107573 |
|---|---|
| Date | Jun 05, 2020 |
| Instrument | 107573 |
| Name | PENNYMAC |
|---|---|
| Address | WESTLAKE VILLAGE, CA 91361 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jun 04, 2050 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Mount Diablo 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 | $609,072 (+2%) Land $290,034 Building $319,038 | |
| 2025 | $7,885.00 (+4.74%) | $597,131 (+4.04%) Land $284,348 Building $312,783 |
| 2023 | $7,528.00 (+1.72%) | $573,945 Land $273,307 Building $300,638 |
| 2022 | $7,401.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Radiate Holdings.
Based on FCC filings for 334 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CONTRA COSTA WATER DISTRICT serves 210,500 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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