331 Brownstone Rd is a 911 square foot house on a 3.84 acre lot with 3 bedrooms and 1 bathroom. - it last sold on March 25, 1987 for $160,000. Based on Redfin's Oakley data, we estimate the home's value is $634,550.
Single-familyProperty Type
1925Year Built
3.84 acresLot Size
$697Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$634,550
$475K since sold in March 1987$16K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 18.2% lower than the average sale price ($776K) 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
R-6
Single Family Residential District
The purpose of the single-family residential district regulations is to allow a designated area for single-family residential district development designed to provide as much compatibility as possible with nearby zoning. Intense agricultural uses which create strong or obnoxious odors, or which might disturb adjacent or nearby residential areas with noise or vibration, are not appropriate for the single-family residential zoning districts. The City of Oakley Residential Design Guidelines (see Appendix A of this chapter) should also be referred to as they contain additional information regarding mandatory and suggested guidelines for residentially zoned areas.
Permitted uses
Include but are not limited to:
Agriculture
Equestrian facility
Housing-Single unit
Housing-Multiple units
Housing-Senior
Housing-Other
Park & open space
Jan 30, 2010 • Final
Building - residential re-roof
Install new composition shingles on a residential building.
Roofing
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: 911
Ground Floor Sq. Ft: 911
Building Sq. Ft: 911
# of Stories: 1
Legal Description: PARCEL MAP 21 PG 46 PCL C
Parking & Garage Information
Garage/Parking Sq. Ft: 288
Lot Information
# of Buildings: 4
Land Sq. Ft: 167,270
Acres: 3.84
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 911
Stories: 1.0
Lot Size: 3.84 acres
Style: Single Family Residential
Year Built: 1925
Year Renovated: —
County: Contra Costa County
APN: 0342200318
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Gehringer Elementary School
Public K-5 • Assigned • 0.3mi
6/10
O'Hara Park Middle School
Public 6-8 • Assigned • 1.2mi
3/10
Freedom High School
Public 9-12 • Assigned • 0.9mi
5/10
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
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
7/10 Heat Factor
7 days above 101° expected this year, 15 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, 18 days in 30 years
Provided by First Street
Historical weather
Oakley, CA • 94561
Average low and high temperatures (°F)
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55
64
47
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Sun exposure
In this area, properties receive around 12.2 hours in
June and 4.7 hours in December, placing it above the
U.S. average for solar exposure.
12.2 hrs
4.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$603,000 – $730,000
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