3873 Aragon Ln is a 2,585 square foot house on a 9,200 square foot lot with 4 bedrooms and 3 bathrooms. - it last sold on October 02, 2008 for $774,000. Based on Redfin's San Ramon data, we estimate the home's value is $1,690,021.
Single-familyProperty Type
1979Year Built
9,200 sq ftLot Size
$654Est. Price/Sq.Ft.
3 car garageParking
Source:Public Records
Redfin Estimate
$1,690,021
$916K since sold in October 2008$14K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 1% higher than the average sale price ($1.67M) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40360984
Sep 8, 2008
Listing Removed
—
Public Records
Jan 3, 2002
Sold
$585,000
$226/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #11120682
Dec 11, 2001
Listing Removed
—
bridgeMLS, Bay East AOR, or Contra Costa AOR #10577687
Aug 16, 1996
Listing Removed
—
Public Records
Aug 13, 1996
Sold
$340,000
$132/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #26577687
Jul 18, 1996
Listing Removed
—
Public Records
Sep 19, 1983
Sold
$101,500
$39/sq ft
Year
Property tax
Land + Additions
Assessment*
2026
$12,980 (+3.2%)
$564,806 + $518,954
$1,083,760
2025
$12,576 (+2.1%)
$564,806 + $518,954
$1,083,760
2024
$12,317 (+1.6%)
$553,732 + $508,779
$1,062,511
2023
$12,119 (+0.7%)
$542,875 + $498,803
$1,041,678
2022
$12,029 (+8.4%)
$532,231 + $489,023
$1,021,254
2021
$11,102 (+1.0%)
$521,796 + $479,435
$1,001,231
2020
$10,987 (+1.1%)
$511,565 + $409,250
$920,815
2019
$10,867 (+3.9%)
$506,320 + $405,054
$911,374
2018
$10,463 (+3.8%)
$496,393 + $397,112
$893,505
2017
$10,082 (+1.3%)
$477,118 + $381,693
$858,811
2016
$9,955 (+1.3%)
$477,118 + $381,693
$858,811
2015
$9,828 (+1.4%)
$467,763 + $374,209
$841,972
2014
$9,694 (+25.0%)
$451,712 + $361,369
$813,081
2013
$7,755 (+1.3%)
$451,712 + $361,369
$813,081
2012
$7,658 (−7.6%)
$357,500 + $286,000
$643,500
2011
$8,285 (+0.6%)
$357,500 + $286,000
$643,500
2010
$8,234 (−8.6%)
$390,000 + $312,000
$702,000
2009
$9,008 (+19.4%)
$390,000 + $312,000
$702,000
2008
$7,546
$430,000 + $344,000
$774,000
Tax history for 3873 Aragon Ln
Year
Property tax
Land + Additions
Assessment*
2026
$12,980 (+3.2%)
$564,806 + $518,954
$1,083,760
2025
$12,576 (+2.1%)
$564,806 + $518,954
$1,083,760
2024
$12,317 (+1.6%)
$553,732 + $508,779
$1,062,511
2023
$12,119 (+0.7%)
$542,875 + $498,803
$1,041,678
2022
$12,029 (+8.4%)
$532,231 + $489,023
$1,021,254
2021
$11,102 (+1.0%)
$521,796 + $479,435
$1,001,231
2020
$10,987 (+1.1%)
$511,565 + $409,250
$920,815
2019
$10,867 (+3.9%)
$506,320 + $405,054
$911,374
2018
$10,463 (+3.8%)
$496,393 + $397,112
$893,505
2017
$10,082 (+1.3%)
$477,118 + $381,693
$858,811
2016
$9,955 (+1.3%)
$477,118 + $381,693
$858,811
2015
$9,828 (+1.4%)
$467,763 + $374,209
$841,972
2014
$9,694 (+25.0%)
$451,712 + $361,369
$813,081
2013
$7,755 (+1.3%)
$451,712 + $361,369
$813,081
2012
$7,658 (−7.6%)
$357,500 + $286,000
$643,500
2011
$8,285 (+0.6%)
$357,500 + $286,000
$643,500
2010
$8,234 (−8.6%)
$390,000 + $312,000
$702,000
2009
$9,008 (+19.4%)
$390,000 + $312,000
$702,000
2008
$7,546
$430,000 + $344,000
$774,000
*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
RS-10
Single-Family Residential Zone
The RS zone is applied to areas of the City appropriate for single-family residential land uses in neighborhoods at a density of three to six units per net acre, subject to appropriate standards. The specific allowable density for each parcel is shown on the Zoning Map by a numerical suffix residential density designator (see Section D2-8). Minimum lot size for new parcels ranges from 3,500 to 12,000 sq ft. Depending upon the applicable residential density designator, the RS zone is consistent with and implements the Single Family Low Density, Single Family Low-Medium Density, and Single Family Medium Density land use classifications of the General Plan.
Permitted uses
Include but are not limited to:
Day care facility
Housing-Single unit
Housing-Senior
Housing-Student
Housing-Other
May 19, 2025 • Final
Miscellaneous - electrical
Electrical
Oct 19, 2021 • Final
Electrical service - electrical
Electrical
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
Heating & Cooling
Air Conditioning Type: Central
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 10
Exterior
Exterior Information
Physical Condition: Excellent
Building Style Type: Contemporary
Construction Type: Frame
Building Construction Quality: Average
Exterior Wall: Stucco
Pool Information
Has Pool
Property Information
Subdivision Name: SUBDIVISION 5216
Living Sq. Ft: 2,585
Ground Floor Sq. Ft: 1,423
Building Sq. Ft: 3,235
# of Stories: 2
Legal Description: T05216 L0012 B
Parking & Garage Information
# of Parking Spaces: 3
Parking Type: Built-In Garage
Garage/Parking Sq. Ft: 650
Garage / Carport Type: Built In
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,200
Legal Lot Number: 12
Acres: 0.2112
County Use Description: SINGLE FAMILY DETACHED WITH MA
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,585
Stories: 2.0
Lot Size: 9,200 square feet
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1980
County: Contra Costa County
APN: 2094710122
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 • 0.6mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 0.8mi
10/10
California High School
Public 9-12 • Assigned • 2.1mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
San Ramon, Past 3 months,Median price $1.51M, down 4.5% YoY,Homes sold: 169 in July, up 1%,Days on market 20 days,Market Active but more balanced; slight seller advantage,Bottom line: Prices have softened, but homes are still selling relatively...