3429 Stone Valley Rd is a 3,040 square foot house on a 0.37 acre lot with 4 bedrooms and 3 bathrooms. - it last sold on July 24, 1992 for $625,000. Based on Redfin's Alamo data, we estimate the home's value is $2,630,026.
Single-familyProperty Type
1983Year Built
0.37 acresLot Size
$865Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,630,026
$2.0M since sold in July 1992$12K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 4% lower than the average sale price ($2.74M) 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 and permits
Zoning
Permits
P-1
Planned Unit District
A large-scale integrated development or a general plan special area of concern provides an opportunity for, and requires cohesive design when flexible regulations are applied; whereas the application of conventional regulation, designed primarily for individual lot development, to a large-scale development or special area may create a monotonous and inappropriate neighborhood. The planned unit district is intended to allow diversification in the relationship of various uses, buildings, structures, lot sizes and open space while insuring substantial compliance with the general plan and the intent of the county code in requiring adequate standards necessary to satisfy the requirements of the public health, safety and general welfare. These standards shall be observed without unduly inhibiting the advantages of large-scale site or special area planning.
Permitted uses
Include but are not limited to:
Housing-Single unit
Dec 9, 2025 • Final
Building - residential re-roof
Remove the existing wood shake roof and install a new composition roof. A separate electrical permit is required to disconnect and reconnect solar panels. A cool roof or cool roof exception is required at final inspection.
Roofing
Nov 6, 2025 • Active
Building - residential solar photovoltaic
Remove and reinstall existing solar panels. Install a new solar system with additional panels in conjunction with reroofing work.
Electrical
Solar
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
Heating & Cooling
Air Conditioning Type: Central
Heating Fuel Type: Gas
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 2
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Physical Condition: Good
Foundation Type: Raised W/Crawlspace
Building Style Type: Ranch
Building Construction Quality: Good
Exterior Wall: Wood
Pool Information
Has Pool
Property Information
Living Sq. Ft: 3,040
Ground Floor Sq. Ft: 3,040
Building Sq. Ft: 3,040
# of Stories: 1
Legal Description: T05536 L0066 B
Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Garage/Carport
Garage/Parking Sq. Ft: 664
Lot Information
# of Buildings: 1
Land Sq. Ft: 16,250
Legal Lot Number: 66
Acres: 0.373
Zoning Code: P-1
County Use Description: SINGLE FAMILY DETACHED WITH MA
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 3,040
Stories: 1.0
Lot Size: 0.37 acres
Style: Single Family Residential
Year Built: 1983
Year Renovated: 2000
County: Contra Costa County
APN: 1937220042
Home facts updated by county records on Oct 10, 2026
Around this home
Schools
Green Valley Elementary School
Public K-5 • Assigned • 1.8mi
10/10
Los Cerros Middle School
Public 6-8 • Assigned • 1.4mi
10/10
Monte Vista High School
Public 9-12 • Assigned • 1.1mi
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
6/10 Fire Factor
8% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 94° expected this year, 14 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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81
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76
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62
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43
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Sun exposure
In this area, properties receive around 11.8 hours in
June and 4.8 hours in December, placing it above the
U.S. average for solar exposure.
11.8 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$2.50M – $3.03M
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