3505 Ashbourne Cir is a 4,008 square foot house on a 0.3 acre lot with 4 bedrooms and 4 bathrooms. - it last sold on May 21, 2021 for $2,280,000. Based on Redfin's San Ramon data, we estimate the home's value is $2,622,054.
Single-familyProperty Type
2004Year Built
0.3 acresLot Size
$654Est. Price/Sq.Ft.
3 car garageParking
Source:Public Records
Redfin Estimate
$2,622,054
$342K since sold in May 2021$74K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 16.6% higher than the average sale price ($2.25M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40942933
Mar 26, 2021
Listing Removed
—
Year
Property tax
Land + Additions
Assessment*
2026
$30,930 (+3.2%)
$1,104,080 + $1,413,222
$2,517,302
2025
$29,964 (+2.1%)
$1,104,080 + $1,413,222
$2,517,302
2024
$29,355 (+1.5%)
$1,082,432 + $1,385,512
$2,467,944
2023
$28,926 (+2.9%)
$1,061,208 + $1,358,346
$2,419,554
2022
$28,112 (+38.5%)
$1,040,400 + $1,331,712
$2,372,112
2021
$20,291 (+1.0%)
$1,020,000 + $1,305,600
$2,325,600
2020
$20,092 (+1.1%)
$676,069 + $861,637
$1,537,706
2019
$19,881 (+3.6%)
$669,137 + $852,802
$1,521,939
2018
$19,197 (+3.6%)
$656,017 + $836,081
$1,492,098
2017
$18,525 (+1.2%)
$630,544 + $803,616
$1,434,160
2016
$18,297 (+1.0%)
$630,544 + $803,616
$1,434,160
2015
$18,113 (+8.0%)
$618,181 + $787,859
$1,406,040
2014
$16,765 (+11.4%)
$596,969 + $760,824
$1,357,793
2013
$15,052 (−1.1%)
$596,969 + $760,824
$1,357,793
2012
$15,218 (+8.7%)
$479,671 + $611,329
$1,091,000
2011
$14,004 (+0.1%)
$472,856 + $602,644
$1,075,500
2010
$13,989 (−4.1%)
$405,000 + $565,000
$970,000
2009
$14,593 (−14.8%)
$444,059 + $565,941
$1,010,000
2008
$17,121
$527,595 + $672,405
$1,200,000
Tax history for 3505 Ashbourne Cir
Year
Property tax
Land + Additions
Assessment*
2026
$30,930 (+3.2%)
$1,104,080 + $1,413,222
$2,517,302
2025
$29,964 (+2.1%)
$1,104,080 + $1,413,222
$2,517,302
2024
$29,355 (+1.5%)
$1,082,432 + $1,385,512
$2,467,944
2023
$28,926 (+2.9%)
$1,061,208 + $1,358,346
$2,419,554
2022
$28,112 (+38.5%)
$1,040,400 + $1,331,712
$2,372,112
2021
$20,291 (+1.0%)
$1,020,000 + $1,305,600
$2,325,600
2020
$20,092 (+1.1%)
$676,069 + $861,637
$1,537,706
2019
$19,881 (+3.6%)
$669,137 + $852,802
$1,521,939
2018
$19,197 (+3.6%)
$656,017 + $836,081
$1,492,098
2017
$18,525 (+1.2%)
$630,544 + $803,616
$1,434,160
2016
$18,297 (+1.0%)
$630,544 + $803,616
$1,434,160
2015
$18,113 (+8.0%)
$618,181 + $787,859
$1,406,040
2014
$16,765 (+11.4%)
$596,969 + $760,824
$1,357,793
2013
$15,052 (−1.1%)
$596,969 + $760,824
$1,357,793
2012
$15,218 (+8.7%)
$479,671 + $611,329
$1,091,000
2011
$14,004 (+0.1%)
$472,856 + $602,644
$1,075,500
2010
$13,989 (−4.1%)
$405,000 + $565,000
$970,000
2009
$14,593 (−14.8%)
$444,059 + $565,941
$1,010,000
2008
$17,121
$527,595 + $672,405
$1,200,000
*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
Dec 8, 2025 • Active
Solarapp+ approved
Install a roof-mounted solar photovoltaic system with an energy storage system and an integrated inverter. Install a new sub-panel with a main breaker.
Battery
Electrical
Solar
Jul 22, 2024 • Final
Building - residential plumbing
Remove and replace a gas water heater located in the garage.
Plumbing
Water heater
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: 11
Exterior
Property Information
Subdivision Name: SUBDIVISION 7575
Living Sq. Ft: 4,008
Ground Floor Sq. Ft: 2,189
Building Sq. Ft: 4,008
# of Stories: 2
Legal Description: T7575 L22
Parking & Garage Information
Garage/Parking Sq. Ft: 760
Lot Information
# of Buildings: 1
Land Sq. Ft: 12,900
Legal Lot Number: 22
Acres: 0.2961
Zoning Code: P-1
County Use Description: SINGLE FAMILY DETACHED WITH MA
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 4.0
Sq. Ft.: 4,008
Stories: 2.0
Parking Spaces: 3
Basement: No
Accessible: No
Lot Size: 0.3 acres
Style: Single Family Residential
Year Built: 2004
Year Renovated: 2004
County: Contra Costa County
APN: 2112800145
HOA Dues: $175/month
Garage: Yes
Features: Views
Home facts updated by owner on Jul 3, 2026
Around this home
Schools
K - 12
Preschool & daycare
Bollinger Canyon Elementary School
Public K-5 • Assigned • 1.2mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 2.2mi
10/10
California High School
Public 9-12 • Assigned • 2.4mi
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
4% 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
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
$2.49M – $3.02M
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