4855 John Muir Rd is a 1,103 square foot house on a 1.17 acre lot with 3 bedrooms and 2 bathrooms. - it last sold on April 16, 2021 for $895,000. Based on Redfin's Martinez data, we estimate the home's value is $1,031,560.
Single-familyProperty Type
1958Year Built
1.17 acresLot Size
$935Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,031,560
$137K since sold in April 2021$15K since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 21.3% higher than the average sale price ($851K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
RR-40
One Family Rural Residential District
Promote the stability of existing residential neighborhoods of a generally rural nature, which are unique within the community; Avoid the overloading of existing streets and utilities by preventing the construction of buildings of excessive size and population density in relation to the land around them.
Permitted uses
Include but are not limited to:
Agriculture
Equestrian facility
Agriculture-Other
Housing-Group
Housing-Single unit
Housing-Multiple units
Housing-Senior
Housing-Other
Property details
Interior
Room Information
# of Rooms: 6
Exterior
Property Information
Subdivision Name: MUIR OAKS
Living Sq. Ft: 1,103
Ground Floor Sq. Ft: 1,103
Building Sq. Ft: 1,103
# of Stories: 1
Legal Description: MUIR OAKS POR LOTS 22 & 23
Parking & Garage Information
Garage/Parking Sq. Ft: 432
Lot Information
# of Buildings: 1
Land Sq. Ft: 51,000
Legal Lot Number: 22
Acres: 1.1708
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,103
Stories: 1.0
Lot Size: 1.17 acres
Style: Single Family Residential
Year Built: 1958
Year Renovated: 1959
County: Contra Costa County
APN: 1620700086
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
John Swett Elementary School
Public K-5 • Assigned • 0.7mi
8/10
Martinez Junior High School
Public 6-8 • Assigned • 2.0mi
7/10
Alhambra Senior High School
Public 9-12 • Assigned • 1.5mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
5/10 Fire Factor
3% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 97° expected this year, 14 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
13 unhealthy days expected this year, 13 days in 30 years
Provided by First Street
Historical weather
Martinez, CA • 94553
Average low and high temperatures (°F)
60
43
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49
77
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80
56
87
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84
59
78
56
64
49
56
46
Jan
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May
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Sun exposure
In this area, properties receive around 11.5 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.5 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$980,000 – $1.19M
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