3879 Blackstone Ct
Castro Valley, CA 94542
- 6 beds
- 5 baths
- 3,848 sqft
- ~1 acre lot
- $594 per sqft
- 1998 build
- – on site
Welcome to this stunning 6-bedroom, 4.5-bathroom home located in the highly desirable Blackstone Community and within the acclaimed Castro Valley School District. Offering 3,848 sq ft of well-designed living space on an expansive lot of over 1 acre, this home sits at the end of a peaceful cul-de-sac, providing the perfect blend of privacy and comfort. Soaring ceilings in the formal living and family rooms create a bright and airy atmosphere. The main level features a spacious primary suite plus an additional ensuite bedroom. The open-concept kitchen boasts stainless steel appliances and flows into a cozy family room with a gas fireplace. A half bath and laundry room complete the main floor. Upstairs, you'll find four more generously sized bedrooms and a large loft that can serve as a second living area, game room, or office. Two bedrooms share a Jack and Jill bathroom, while the other two are served by a hall bath. Enjoy recent updates including a freshly painted interior, new carpet, and energy-saving paid-off solar panels. The expansive backyard is built for entertaining with breathtaking canyon views, a gazebo, an enclosed hot tub, and low-maintenance artificial turf. Additional highlights include a 3-car side-by-side garage and a quiet location ideal for families.
Last checked:
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Last updated May 16, 2025
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MLS# 41097711 —
This home is listed in more than one place. See it here.
The Building
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Year Built:1998
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New Construction:No
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Construction Materials:Stucco, Wood Siding
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Architectural Style:Contemporary
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Roof:Tile
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Foundation:Slab
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Patio:1
Interior
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Levels:Two
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Kitchen Features:Kitchen Island, Remodeled Kitchen
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Eating Area:In Kitchen
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Flooring:Wood, Tile, Carpet
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Room Type:Family Room, Kitchen
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Fireplace:Yes
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Fireplace:Family Room, Gas
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Laundry:Dryer Included, Washer Included
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Laundry:1
Room Dimensions
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Living Area:3848.00
Location
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Directions:Fairview to Old Fairview Ave Cross Street: Old Fairview Ave.
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Latitude:37.67780100
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Longitude:-122.03976384
The Property
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Property Type:Residential
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Subtype:Single Family Residence
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Lot Features:Back Yard, Yard, Sprinklers Timer
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Lot Size Area:53225.0000
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Lot Size Acres:1.2219
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Lot Size SqFt:53225.00
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Lot Size Source:Taped
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View:1
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View:Canyon, Park/Greenbelt, Hills, Panoramic
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Sprinklers:Yes
Listing Agent
- Contact info:
- No listing contact info available
Beds
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Total Bedrooms:6
Baths
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Total Baths:5
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Bathroom Features:Shower in Tub, Double sinks in bath(s)
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Full & Three Quarter Baths:4
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Full Baths:4
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Half Baths:1
The Listing
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Parcel Number:41728420
Heating & Cooling
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Heating:1
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Heating:Forced Air
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Cooling:Yes
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Cooling:Central Air
Utilities
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Sewer:Public Sewer
Appliances
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Appliances:Gas Water Heater
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Included:Yes
The Community
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Subdivision:Not Listed
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Subdivision:Not Listed
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Association:No
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Pool:None
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Private Pool:No
Parking
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Parking:Yes
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Parking:Garage, Garage Door Opener
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Parking Spaces:6.00
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Attached Garage:Yes
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Garage Spaces:3.00
Monthly cost estimate

Asking price
$2,289,000
Expense | Monthly cost |
---|---|
Mortgage
This calculator is intended for planning and education purposes only. It relies on assumptions and information provided by you regarding your goals, expectations and financial situation, and should not be used as your sole source of information. The output of the tool is not a loan offer or solicitation, nor is it financial or legal advice. |
$12,256
|
Taxes | N/A |
Insurance | $629 |
Utilities | $233 See report |
Total | $13,118/mo.* |
*This is an estimate |
Walk Score®
Provided by WalkScore® Inc.
Walk Score is the most well-known measure of walkability for any address. It is based on the distance to a variety of nearby services and pedestrian friendliness. Walk Scores range from 0 (Car-Dependent) to 100 (Walker’s Paradise).
Bike Score®
Provided by WalkScore® Inc.
Bike Score evaluates a location's bikeability. It is calculated by measuring bike infrastructure, hills, destinations and road connectivity, and the number of bike commuters. Bike Scores range from 0 (Somewhat Bikeable) to 100 (Biker’s Paradise).
Soundscore™
Provided by HowLoud
Soundscore is an overall score that accounts for traffic, airport activity, and local sources. A Soundscore rating is a number between 50 (very loud) and 100 (very quiet).
Air Pollution Index
Provided by ClearlyEnergy
The air pollution index is calculated by county or urban area using the past three years data. The index ranks the county or urban area on a scale of 0 (best) - 100 (worst) across the United Sates.
Sale history
Date | Event | Source | Price | % Change |
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5/15/25
May 15, 2025
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Listed / Active | CRMLS_CA | $2,289,000 | 140.9% (5.9% / YR) |
5/14/01
May 14, 2001
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BRIDGE | $950,000 | ||
5/13/01
May 13, 2001
|
BRIDGE | $950,000 |