Contra Costa County property record for 243 Appian Ct, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,680 sqft · built 1966 |
| Lot Size | 0.215 acres (9,350 sqft) |
| Owner | Company Name on File |
| Tax Bill | $2,415 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 164-261-011-5 |
| Primary APN | 164-261-011-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,680 sqft Living Area |
| 1st Floor Area | 840 sqft |
| 2nd Floor Area | 840 sqft |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1976 |
| Lot Area | 9,350 sqft (0.215 acres) |
| Garage Type | Attached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 243 APPIAN CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-6211 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R75 |
| Legal Description | TRACT 3302 LOT 29 |
| Legal Subdivision | AMENDED MAP OF SUBDIVISION 3302 |
| Legal Tract | 3302 |
| Legal Lot Number | 29 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1022 |
| Census Tract | 321103 |
Source: Contra Costa County records · APN 164-261-011-5
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 | 243 APPIAN CT, MARTINEZ, CA 94553-6211 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Sep 15, 2000 |
| Transfer Doc | 0000207449 |
| Record Updated | Sep 20, 2026 |
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 | 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 | $145,598 (+2%) Land $48,286 Building $97,312 | |
| 2025 | $2,415.00 (+5.05%) Homeowner's exemption | $142,744 (+4.04%) Land $47,340 Building $95,404 |
| 2023 | $2,299.00 (+0.92%) Homeowner's exemption | $137,202 Land $45,502 Building $91,700 |
| 2022 | $2,278.00 |
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 67% of the US · lower than 81% of California |
|---|---|
| Wildfire Likelihood | 0.03% 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 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Radiate Holdings, Verizon.
Based on FCC filings for 463 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 | CITY OF MARTINEZ serves 31,015 people |
|---|---|
| Water Source | Purchased surface water from CONTRA COSTA WATER DISTRICT |
| Last State Inspection | Oct 2025 |
| Also Mapped Here | EAST BAY MUD |
| 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 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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