2234 Stone Valley Rd is a 3,442 square foot house on a 0.53 acre lot with 3 bedrooms and 3 bathrooms. - it last sold on April 11, 1990 for $622,000. Based on Redfin's Alamo data, we estimate the home's value is $2,701,248.
Single-familyProperty Type
1990Year Built
0.53 acresLot Size
$785Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,701,248
$2.1M since sold in April 1990$27K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 2.3% lower than the average sale price ($2.76M) of 5 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Jan 13, 2025 • Final
Building - residential mechanical
Replace two condensers in the back yard and two furnaces in the garage with like-for-like units. A HERS report may be required at the final inspection.
HVAC
Apr 29, 2024 • Final
Building/residential/p/pool
Resurface a pool by removing and replacing the surface, tile, and mastic. Replace recessed wall foot pads and install channel drain grates. No structural changes or new equipment are included.
Pool and hot tub
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: 12
Exterior
Pool Information
Has Pool
Property Information
Living Sq. Ft: 3,442
Ground Floor Sq. Ft: 2,263
Building Sq. Ft: 3,442
# of Stories: 2
Legal Description: PCL MAP 142 PG 9 PCL B
Parking & Garage Information
Garage/Parking Sq. Ft: 1,220
Lot Information
# of Buildings: 1
Land Sq. Ft: 23,087
Acres: 0.53
Zoning Code: R-20
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 3,442
Stories: 2.0
Lot Size: 0.53 acres
Style: Single Family Residential
Year Built: 1990
Year Renovated: 1990
County: Contra Costa County
APN: 1931400285
Home facts updated by county records on Oct 10, 2026
Around this home
Schools
Rancho Romero Elementary School
Public K-5 • Assigned • 1.3mi
9/10
Stone Valley Middle School
Public 6-8 • Assigned • 0.6mi
10/10
Monte Vista High School
Public 9-12 • Assigned • 1.7mi
10/10
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
4/10 Fire Factor
2% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 95° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 17 days in 30 years
Provided by First Street
Historical weather
Alamo, CA • 94507
Average low and high temperatures (°F)
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82
56
86
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81
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76
53
62
44
56
43
Jan
Feb
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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
$2.57M – $3.11M
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