2257 Ashbourne Dr is a 5,632 square foot house on a 0.35 acre lot with 6 bedrooms and 7 bathrooms. Based on Redfin's San Ramon data, we estimate the home's value is $3,485,247.
Single-familyProperty Type
2015Year Built
0.35 acresLot Size
$619Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$3,485,247
$70K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 28% higher than the average sale price ($2.72M) 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*
2025
$29,856 (+2.1%)
$1,184,859 + $1,329,401
$2,514,260
2024
$29,248 (+1.5%)
$1,161,627 + $1,303,335
$2,464,962
2023
$28,819 (+2.9%)
$1,138,850 + $1,277,780
$2,416,630
2022
$28,004 (−1.5%)
$1,116,520 + $1,252,726
$2,369,246
2021
$28,430 (+0.8%)
$1,094,628 + $1,228,163
$2,322,791
2020
$28,191 (+1.1%)
$1,073,165 + $1,204,082
$2,277,247
2019
$27,884 (+3.7%)
$1,062,162 + $1,191,736
$2,253,898
2018
$26,901 (+3.3%)
$1,041,336 + $1,168,369
$2,209,705
2017
$26,029 (+129.4%)
$1,000,900 + $1,123,000
$2,123,900
2016
$11,349 (+4.4%)
$1,000,900 + $1,123,000
$2,123,900
2015
$10,870 (+1.5%)
$604,620 + $156,000
$760,620
2014
$10,713 (+1.4%)
$583,874 + $230,056
$813,930
2013
$10,566 (−11.0%)
$583,874 + $230,056
$813,930
2012
$11,871 (+104.4%)
$581,236 + $229,017
$810,253
2011
$5,808 (−21.2%)
$505,000 + $219,000
$724,000
2010
$7,373
$558,667
2009
$7,371 (+0.5%)
$554,492
2008
$7,336
$555,810
Tax history for 2257 Ashbourne Dr
Year
Property tax
Land + Additions
Assessment*
2025
$29,856 (+2.1%)
$1,184,859 + $1,329,401
$2,514,260
2024
$29,248 (+1.5%)
$1,161,627 + $1,303,335
$2,464,962
2023
$28,819 (+2.9%)
$1,138,850 + $1,277,780
$2,416,630
2022
$28,004 (−1.5%)
$1,116,520 + $1,252,726
$2,369,246
2021
$28,430 (+0.8%)
$1,094,628 + $1,228,163
$2,322,791
2020
$28,191 (+1.1%)
$1,073,165 + $1,204,082
$2,277,247
2019
$27,884 (+3.7%)
$1,062,162 + $1,191,736
$2,253,898
2018
$26,901 (+3.3%)
$1,041,336 + $1,168,369
$2,209,705
2017
$26,029 (+129.4%)
$1,000,900 + $1,123,000
$2,123,900
2016
$11,349 (+4.4%)
$1,000,900 + $1,123,000
$2,123,900
2015
$10,870 (+1.5%)
$604,620 + $156,000
$760,620
2014
$10,713 (+1.4%)
$583,874 + $230,056
$813,930
2013
$10,566 (−11.0%)
$583,874 + $230,056
$813,930
2012
$11,871 (+104.4%)
$581,236 + $229,017
$810,253
2011
$5,808 (−21.2%)
$505,000 + $219,000
$724,000
2010
$7,373
$558,667
2009
$7,371 (+0.5%)
$554,492
2008
$7,336
$555,810
*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
Sep 6, 2023 • Final
Building - residential electrical
Install a Tesla Gen 3 wall connector.
Electrical
Ev charger
Feb 17, 2023 • Final
Building - residential electrical
Install a standard electric vehicle charger.
Electrical
Ev charger
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: 14
Exterior
Property Information
Subdivision Name: SUBDIVISION 7578
Living Sq. Ft: 5,632
Ground Floor Sq. Ft: 2,856
Building Sq. Ft: 5,632
# of Stories: 2
Legal Description: T7578 L47
Parking & Garage Information
Garage/Parking Sq. Ft: 721
Lot Information
# of Buildings: 1
Land Sq. Ft: 15,150
Legal Lot Number: 47
Acres: 0.3478
Zoning Code: P-1
County Use Description: SINGLE FAMILY DETACHED WITH MA
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 6
Baths: 7.0
Sq. Ft.: 5,632
Stories: 2.0
Lot Size: 0.35 acres
Style: Single Family Residential
Year Built: 2015
Year Renovated: 2016
County: Contra Costa County
APN: 2112400102
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Bollinger Canyon Elementary School
Public K-5 • Assigned • 1.8mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 2.7mi
10/10
California High School
Public 9-12 • Assigned • 3.1mi
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
5/10 Fire Factor
5% chance of being in a wildfire in next 30 years
3/10 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
8/10 Air Factor
14 unhealthy days expected this year, 15 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
78
56
84
58
83
59
77
54
64
46
59
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.2 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.2 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$3.31M – $4.01M
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