Contra Costa County property record for 4874 John Muir Rd, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,463 sqft · built 1979 |
| Lot Size | 1.03 acres (45,000 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $10,105 (2025) |
| Deeds & Mortgages | Apr 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 162-131-004-2 |
| Primary APN | 162-131-004-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,463 sqft Living Area |
| 1st Floor Area | 2,463 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 45,000 sqft |
| Garage Type | Attached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4874 JOHN MUIR RD |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4530 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R40 |
| Legal Description | MUIR OAKS POR LOTS 27 & 28 |
| Legal Subdivision | MUIR OAKS |
| Legal Lot Number | 27,28 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 321101 |
4874 John Muir Rd is owned and occupied by two individuals who acquired it in August 1998.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4874 JOHN MUIR RD, MARTINEZ, CA 94553-4530 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Aug 10, 1998 |
| Deed Sale | Aug 10, 1998 |
| Deed Document Number | 1998188624 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 4874 JOHN MUIR RD, MARTINEZ, CA 94553-4530 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Name | Verified Name |
|---|---|
| Address | 4874 JOHN MUIR RD, MARTINEZ, CA 94553-4530 |
| Document Number | 0000072760 |
|---|---|
| Date | Apr 27, 2022 |
| Instrument | 2022-072760 |
| Name | COMMERCE BANK |
|---|---|
| Type | Bank |
| Address | KANSAS CITY, MO 64106 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | May 1, 2037 |
The 2025 property tax bill for 4874 John Muir Rd was $10,105 with a homeowner's exemption.
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 | $799,514 (+2%) Land $367,776 Building $431,738 | |
| 2025 | $10,105.00 Homeowner's exemption | $783,838 Land $360,565 Building $423,273 |
| 2023 | $9,488.00 (+1.68%) Homeowner's exemption | $753,403 Land $346,565 Building $406,838 |
| 2022 | $9,331.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4874 John Muir Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1981.
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 Policies | 1 in force |
| Nearby Flood Claims | 1 (1981) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Nov 1981 · rainfall accumulation |
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 4874 John Muir 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 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.05% annual chance |
| Exposure | None beyond 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 187 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 DSL | 100 / 20 |
May also be available: Astound Broadband.
5G (outdoors only) and 4G LTE
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