3530 Carlfield St is a 1,530 square foot house on a 5,200 square foot lot with 2 bedrooms and 2 bathrooms. - it last sold on May 16, 1994 for $105,000. Based on Redfin's El Sobrante data, we estimate the home's value is $610,054.
Single-familyProperty Type
1948Year Built
5,200 sq ftLot Size
$399Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$610,054
$505K since sold in May 1994$8,000 since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.3% lower than the average sale price ($651K) 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
Dec 14, 2017 • Final
Building/residential/au/addition unconditioned
Legalize an unconditioned addition by converting a patio enclosure into a room. This work includes completing an addition that was previously started without permits or approvals.
Addition
Jan 30, 2010 • Final
Building - residential re-roof
Install a class A composition roof.
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: 6
Exterior
Property Information
Subdivision Name: SERPA
Living Sq. Ft: 1,530
Ground Floor Sq. Ft: 1,530
Building Sq. Ft: 1,530
# of Stories: 1
Legal Description: SERPA TRACT 6 1
Parking & Garage Information
Garage/Parking Sq. Ft: 305
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,200
Legal Lot Number: 6
Legal Block Number: 1
Acres: 0.1194
Zoning Code: R-6
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 2
Baths: 2.0
Sq. Ft.: 1,530
Stories: 1.0
Lot Size: 5,200 square feet
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1975
County: Contra Costa County
APN: 4200340067
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Riverside Elementary School
Public K-6 • Assigned • 0.8mi
4/10
Betty Reid Soskin Middle
Public 6-8 • Assigned • 1.7mi
2/10
De Anza Senior High School
Public 9-12 • Assigned • 1.9mi
4/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
5/10 Flood Factor
Estimated 55-67% chance of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.31% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 87° 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
15 unhealthy days expected this year, 15 days in 30 years
Provided by First Street
Historical weather
El Sobrante, CA • 94803
Average low and high temperatures (°F)
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67
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66
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73
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73
56
73
54
61
48
57
45
Jan
Feb
Mar
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Sun exposure
In this area, properties receive around 11.1 hours in
June and 5 hours in December, placing it above the
U.S. average for solar exposure.
11.1 hrs
5 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$580,000 – $702,000
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