5121 Alhambra Valley Rd is a 1,402 square foot house on a 3.65 acre lot with 2 bedrooms and 1 bathroom. - it last sold on September 22, 1995 for $212,500. Based on Redfin's Martinez data, we estimate the home's value is $925,733.
Single-familyProperty Type
1860Year Built
3.65 acresLot Size
$660Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$925,733
$713K since sold in September 1995$10K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.9% lower than the average sale price ($953K) 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.
Permits
Oct 4, 2021 • Final
Building - residential mechanical
Replace the air conditioning unit and coil. A HERS report is required at the final inspection.
HVAC
Jan 30, 2010 • Final
Building - residential electrical
Perform an electrical service upgrade.
Electrical
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Interior
Room Information
# of Rooms: 7
Exterior
Property Information
Living Sq. Ft: 1,402
Ground Floor Sq. Ft: 1,402
Building Sq. Ft: 1,402
# of Stories: 1
Legal Description: POR RO CANADA DEL HAMBRE
Parking & Garage Information
Garage/Parking Sq. Ft: 352
Lot Information
# of Buildings: 1
Land Sq. Ft: 158,994
Acres: 3.65
Zoning Code: R-20
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 1,402
Stories: 1.0
Lot Size: 3.65 acres
Style: Single Family Residential
Year Built: 1860
Year Renovated: 1930
County: Contra Costa County
APN: 3660400114
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 • 2.9mi
7/10
Alhambra Senior High School
Public 9-12 • Assigned • 2.2mi
8/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
10/10 Flood Factor
Estimated 80%+ chance of a flood reaching the building in the next 30 years
5/10 Fire Factor
5% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 96° expected this year, 15 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)
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43
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83
57
87
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83
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78
56
64
49
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46
Jan
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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
$880,000 – $1.07M
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