Contra Costa County property record for 4241 Harmon Rd, El Sobrante, CA 94803
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,275 sqft · built 1955 |
| Lot Size | 0.113 acres (4,900 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $449,500 (Jan 2008) |
| Tax Bill | $7,779 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 435-023-005 |
| Primary APN | 435-023-005 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,275 sqft Living Area |
| 1st Floor Area | 1,275 sqft |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 4,900 sqft (0.113 acres) |
| Garage Type | Attached |
| Garage Area | 303 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 4241 HARMON RD |
|---|---|
| City | EL SOBRANTE |
| State | CA |
| Zip | 94803-3009 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | JANA BONDS #1 46 |
| Legal Subdivision | JANA BONDS 01 |
| Legal Lot Number | 46 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 361000 |
4241 Harmon Rd is owner-occupied and held in a trust since April 2012.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 4241 HARMON RD, EL SOBRANTE, CA 94803-3009 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 23, 2008 · Amount on File |
| Deed Sale | Jan 23, 2008 · Amount on File |
| Deed Document Number | 200813149 |
| Last Transfer Date | Apr 3, 2012 |
| Transfer Doc | 0000242451 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4241 Harmon Rd was $7,779 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $536,538 (+2%) Land $243,940 Building $292,598 | |
| 2025 | $7,779.00 Homeowner's exemption | $526,018 Land $239,157 Building $286,861 |
| 2023 | $7,431.00 (+1.45%) Homeowner's exemption | $505,594 Land $229,871 Building $275,723 |
| 2022 | $7,325.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4241 Harmon Rd in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1993.
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 (1993–1995) |
| 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 4241 Harmon Rd is low, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 430 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Sonic Telecom.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures