3143 Ashbourne Cir is a 6,170 square foot house on a 0.38 acre lot with 4 bedrooms and 5 bathrooms. Based on Redfin's San Ramon data, we estimate the home's value is $3,216,183.
Single-familyProperty Type
2010Year Built
0.38 acresLot Size
$521Est. Price/Sq.Ft.
3 car garageParking
Source:Public Records
Redfin Estimate
$3,216,183
$154K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 35.8% higher than the average sale price ($2.37M) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$24,983 (+3.2%)
$686,062 + $1,288,440
$1,974,502
2025
$24,203 (+2.1%)
$686,062 + $1,288,440
$1,974,502
2024
$23,708 (+1.5%)
$672,610 + $1,263,177
$1,935,787
2023
$23,361 (+3.4%)
$659,422 + $1,238,409
$1,897,831
2022
$22,587 (−2.3%)
$646,493 + $1,214,127
$1,860,620
2021
$23,127 (+0.9%)
$633,817 + $1,190,321
$1,824,138
2020
$22,915 (+1.1%)
$621,390 + $1,166,982
$1,788,372
2019
$22,671 (+4.9%)
$615,019 + $1,155,017
$1,770,036
2018
$21,608 (+6.4%)
$602,960 + $1,132,370
$1,735,330
2017
$20,302 (+1.2%)
$579,548 + $1,013,429
$1,592,977
2016
$20,059 (+1.0%)
$579,548 + $1,013,429
$1,592,977
2015
$19,858 (+0.9%)
$568,185 + $993,558
$1,561,743
2014
$19,681 (+0.3%)
$548,689 + $959,464
$1,508,153
2013
$19,626 (+17.1%)
$548,689 + $959,464
$1,508,153
2012
$16,767 (+101.0%)
$546,210 + $955,128
$1,501,338
2011
$8,343 (+11.1%)
$394,558 + $817,000
$1,211,558
2010
$7,508 (+3.4%)
$386,822 + $71,000
$457,822
2009
$7,260 (+30.9%)
$383,931
2008
$5,545
$384,844
Tax history for 3143 Ashbourne Cir
Year
Property tax
Land + Additions
Assessment*
2026
$24,983 (+3.2%)
$686,062 + $1,288,440
$1,974,502
2025
$24,203 (+2.1%)
$686,062 + $1,288,440
$1,974,502
2024
$23,708 (+1.5%)
$672,610 + $1,263,177
$1,935,787
2023
$23,361 (+3.4%)
$659,422 + $1,238,409
$1,897,831
2022
$22,587 (−2.3%)
$646,493 + $1,214,127
$1,860,620
2021
$23,127 (+0.9%)
$633,817 + $1,190,321
$1,824,138
2020
$22,915 (+1.1%)
$621,390 + $1,166,982
$1,788,372
2019
$22,671 (+4.9%)
$615,019 + $1,155,017
$1,770,036
2018
$21,608 (+6.4%)
$602,960 + $1,132,370
$1,735,330
2017
$20,302 (+1.2%)
$579,548 + $1,013,429
$1,592,977
2016
$20,059 (+1.0%)
$579,548 + $1,013,429
$1,592,977
2015
$19,858 (+0.9%)
$568,185 + $993,558
$1,561,743
2014
$19,681 (+0.3%)
$548,689 + $959,464
$1,508,153
2013
$19,626 (+17.1%)
$548,689 + $959,464
$1,508,153
2012
$16,767 (+101.0%)
$546,210 + $955,128
$1,501,338
2011
$8,343 (+11.1%)
$394,558 + $817,000
$1,211,558
2010
$7,508 (+3.4%)
$386,822 + $71,000
$457,822
2009
$7,260 (+30.9%)
$383,931
2008
$5,545
$384,844
*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
WSSP
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.
Zone overlays
Westside Specific Plan
Permitted uses
Include but are not limited to:
Housing-Single unit
Jul 11, 2022 • Final
Building - residential solar photovoltaic
Install a roof-mounted solar photovoltaic system on a residential building. The system includes solar modules and micro-inverters.
Construct an exterior balcony at the rear of the home and a masonry wall at the side of the home. Build an arch with columns at the side of the home.
Addition
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: 15
Exterior
Pool Information
Has Pool
Property Information
Subdivision Name: SUBDIVISION 7996
Living Sq. Ft: 6,170
Ground Floor Sq. Ft: 2,587
Building Sq. Ft: 6,170
# of Stories: 2
Legal Description: T7996 L67
Parking & Garage Information
Garage/Parking Sq. Ft: 682
Lot Information
# of Buildings: 1
Land Sq. Ft: 16,674
Legal Lot Number: 67
Acres: 0.3828
Zoning Code: P-1
County Use Description: SINGLE FAMILY DETACHED WITH MA
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 5.0
Sq. Ft.: 6,170
Stories: 2.0
Lot Size: 0.38 acres
Style: Single Family Residential
Year Built: 2010
Year Renovated: 2011
County: Contra Costa County
APN: 2113800227
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
K - 12
Preschool & daycare
Bollinger Canyon Elementary School
Public K-5 • Assigned • 1.6mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 2.6mi
10/10
California High School
Public 9-12 • Assigned • 2.5mi
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
5/10 Fire Factor
5% chance of being in a wildfire in next 30 years
2/10 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
7/10 Air Factor
12 unhealthy days expected this year, 12 days in 30 years
Provided by First Street
Historical weather
San Ramon, CA • 94583
Average low and high temperatures (°F)
61
40
64
43
72
47
70
48
76
52
80
55
80
57
84
58
81
60
73
53
64
46
59
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.6 hours in
June and 4.8 hours in December, placing it above the
U.S. average for solar exposure.
11.6 hrs
4.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.06M – $3.70M
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