LOCATION, LOCATION, LOCATION! Fantastic opportunity for fixing up with tons of potential, to be called dream home. Cul-De-Sac with a huge backyard for possible addition of an ADU. First floor includes a guest bedroom, a full bathroom, laundry room, kitchen, family & living room, and a glass sliding door lead to a large backyard. Upper lever provides a primary suite includes a walk-in closet leads to extra storage space in an annex. 2 bedrooms & 1 full bathroom feature a tube with jets. Twin Creek South neighborhood with Award Winning Schools. Restaurants, Parks, Shopping, Costco, City Center at Bishop Ranch, and freeway access are all within 5 mins drive.
Single-familyProperty Type
1979Year Built
9,350 sq ftLot Size
$674Est. Price/Sq.Ft.
2 car garageParking
Listed by Brenda Lai•DRE #02153319• Intero Real Estate Services
Bought with Nagaraj Annaiah•DRE #02110146• Cheetah
bridgeMLS, Bay East AOR, or Contra Costa AOR #41021652
Apr 12, 2023
Sold
$1,333,000
$657/sq ft
Mar 22, 2023
Pending
—
Mar 16, 2023
Listed
$1,299,000
$640/sq ft
Public Records
Sep 30, 1988
Sold
$260,000
$128/sq ft
Public Records
Apr 8, 1988
Sold
$240,000
$118/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$16,087 (+2.1%)
$955,087 + $459,502
$1,414,589
2024
$15,759 (+161.3%)
$936,360 + $450,493
$1,386,853
2023
$6,032 (+0.8%)
$918,000 + $441,660
$1,359,660
2022
$5,985 (+2.3%)
$216,437 + $252,334
$468,771
2021
$5,849 (+1.5%)
$212,194 + $247,387
$459,581
2020
$5,761 (+1.1%)
$208,034 + $242,537
$450,571
2019
$5,700 (+3.9%)
$205,901 + $240,051
$445,952
2018
$5,488 (+3.9%)
$201,864 + $235,345
$437,209
2017
$5,283 (+1.6%)
$194,026 + $226,207
$420,233
2016
$5,199 (+1.6%)
$194,026 + $226,207
$420,233
2015
$5,119 (+1.6%)
$190,222 + $221,772
$411,994
2014
$5,036 (+1.5%)
$183,695 + $214,163
$397,858
2013
$4,961 (+3.3%)
$183,695 + $214,163
$397,858
2012
$4,803 (+2.2%)
$182,865 + $213,196
$396,061
2011
$4,700 (+1.6%)
$179,280 + $209,016
$388,296
2010
$4,628
$175,765 + $204,918
$380,683
2009
$4,632 (+3.9%)
$174,452 + $203,387
$377,839
2008
$4,458
$174,867 + $203,871
$378,738
Tax history for 3898 Aragon Ln
Year
Property tax
Land + Additions
Assessment*
2025
$16,087 (+2.1%)
$955,087 + $459,502
$1,414,589
2024
$15,759 (+161.3%)
$936,360 + $450,493
$1,386,853
2023
$6,032 (+0.8%)
$918,000 + $441,660
$1,359,660
2022
$5,985 (+2.3%)
$216,437 + $252,334
$468,771
2021
$5,849 (+1.5%)
$212,194 + $247,387
$459,581
2020
$5,761 (+1.1%)
$208,034 + $242,537
$450,571
2019
$5,700 (+3.9%)
$205,901 + $240,051
$445,952
2018
$5,488 (+3.9%)
$201,864 + $235,345
$437,209
2017
$5,283 (+1.6%)
$194,026 + $226,207
$420,233
2016
$5,199 (+1.6%)
$194,026 + $226,207
$420,233
2015
$5,119 (+1.6%)
$190,222 + $221,772
$411,994
2014
$5,036 (+1.5%)
$183,695 + $214,163
$397,858
2013
$4,961 (+3.3%)
$183,695 + $214,163
$397,858
2012
$4,803 (+2.2%)
$182,865 + $213,196
$396,061
2011
$4,700 (+1.6%)
$179,280 + $209,016
$388,296
2010
$4,628
$175,765 + $204,918
$380,683
2009
$4,632 (+3.9%)
$174,452 + $203,387
$377,839
2008
$4,458
$174,867 + $203,871
$378,738
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Permits
Beds
4
Baths
3
Stories
2
Lot width
—
Lot depth
—
Lot size
9,350
Year renovated
2024
Sq. Ft.
2,029
Year built
1979
Style
Single Family Residential
County
Contra Costa County
APN
2094710205
Parking Spaces
2
Basement
No
Accessible
No
HOA Dues
$355 /month
Garage
Yes
Features
Pool
Last updated by owner on Dec 8, 2025.
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
Nov 28, 2025 • Final
Photovoltaic - electrical (solarapp)
Battery
Electrical
Solar
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
Parking
Garage & Parking
Has Garage
# of Garage Spaces: 2
Attached Garage
Interior
Bathroom Information
BATH-PRIMARY INCLUDES: Stall Shower, Tile, Window
BATH NON-PRMY INCLUDE: Shower Over Tub, Tub with Jets
# of Baths: 3
Interior Features
# of Rooms: 10
# of Fireplaces: 1
Fireplace in Family Room, Stone Fireplace, Woodburning Fireplace
Laminate Flooring, Wall to Wall Carpeting
Dryer, Garage Door Opener, Washer, Water Heater (Gas), Window Coverings, Carbon Monoxide Detector, Double Strapped Water Htr
220 Volt Outlet, Dryer, In Laundry Room, Washer, Cabinets
Additional Rooms
Attic
Heating & Cooling
Ceiling Fan(s), Central A/C (1 Zone)
Central
Exterior
Water & Sewer
Sewer System (Public)
Building Information
Existing Construction
Window Screens
Crawl Space Foundation
Shingle
Pool Information
Community
See Remarks
Property Information
Sq. Ft. Source: Public Records
Parcel #: 209-471-020-5
Pets Allowed
Lot Information
Cul-De-Sac, Auto Sprinkler F&R, Backyard, Front Yard, Landscape Back, Landscape Front
Back Yard, Fenced, Front Yard, Patio, Side Yard, Sprinklers (Back), Sprinklers (Front), Storage, Landscape Back, Landscape Front, Porch Steps, Wood Fencing
Location
Homeowners Association Information
HOA Name: Twin Creeks Estates
Has HOA
HOA Fee: 330
Dues Frequency: Annually
HOA Phone: (925) 830-4848
Common Area Maintenance Included, Management Fee Included, Reserves Included, Insurance
Club House, Pool, Tennis Court(s)
Budget, Bylaws, CC&R's, Financial Statement
Transfer Fees Paid by Seller
School Information
High School District: San Ramon Valley (925) 552-5500
Street Level Features
1 Bedroom, 1 Bath
Location Information
Directions to Property: San Ramon Valley to Norris Canyon to Cartagena
Cross Street: Cartagena Lane
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 2,029
Stories: 2.0
Parking Spaces: 2
Basement: No
Accessible: No
Lot Size: 9,350 square feet
Style: Single Family Residential
Year Built: 1979
Year Renovated: 2024
County: Contra Costa County
APN: 2094710205
HOA Dues: $355/month
Garage: Yes
Features: Pool
Home facts updated by owner on Dec 8, 2025
Other
Documents & Disclosures
Natural Hazard Disclosure, Disclosure Statement
Listing Information
Commission to Selling Office: 2.5
Selling Office Information
Board ID: BAY EAST
Around this home
Schools
Bollinger Canyon Elementary School
Public K-5 • Assigned • 0.7mi
10/10
Iron Horse Middle School
Public 6-8 • Assigned • 0.9mi
10/10
California High School
Public 9-12 • Assigned • 2.2mi
10/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
During the last 30 days, San Ramon's market has remained balanced. Buyers enjoy more choices and negotiating opportunities, while seller continuing seeing strong demand for turnkey homes with modern upgrades, functional layout and desirable...
San Ramon is best known for its seamless mix of outdoor recreation and modern conveniences. City Center Bishop Ranch is a major hub for dining, boutique shopping, and weekend events, while the Iron Horse Trail runs right through town, making it super...
San Ramon properties move fast, going pending in just 14 days. With fierce competition at the $1.6M median price, multiple offers and waived contingencies are the norm. Buyers must act decisively and submit their strongest offer immediately to win.
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2023. This data may not show owner updates. Learn more.