4007 Oak Knoll St
Antioch, CA 94509 • 5 Bed • 4 Bath • 4,270 sq.ft.

Property summary

1st time on the market since built! Expansive two-story with 4,000+ sq/ft, featuring 5 bedrooms, 3.5 bathrooms, 3-car garage + an optional bedroom conversion as an ADU, office or shop at the heart of the Black Diamond Ranch subdivision bordering Pittsburg. Offering plenty of kitchen cabinetry and no-spare storage space with solid granite counter tops. Dual zone AC and heating systems. Grand primary bedroom with retreat. 2nd floor common area family loft/bonus room. Spacious, concrete-stamped low maintenance backyard with mature, abundant fruit trees and side-gated access for your RV, watercraft and other vehicles. 3rd-car tandem garage converted into a studio/storage room. Located in close proximity to parks, trails, shopping. Fast & easy access to Hwy 4 for a shorter commute. Enjoy partial Delta views and rolling hills. Great layout for an extended family living or even an at-home business opportunity?! Check your options and make it yours... https://my.matterport.com/show/?m=4QVqRk3CoFm

Days on market: 7

Listing updated: September 12, 2025 - 08:17:09

Property details

Property ID
41110312
Size
4270 sq.ft.
Home Type
Residential
Year Built
2011
Property Size
0.2301 acre
Garage
3
Levels
2
Spa
No
Patio
Patio
Basement
No
View
Hills
Pool
None

Listed by: Juan Carlos Mandrile DRE #01327476 888-584-9427, Exp Realty of California Inc. - Contra Costa

Source: Contra Costa, MLS#: CCBE-CCEPRC Originating MLS: CRMLS

Interior information

Rooms
Bonus Room, Family Room, Kitchen
Bathrooms
4
Kitchen
Gas Water Heater
Cooling
Central Air
Heating
Forced Air
Flooring
Carpet, Tile
Laundry
N/A
$879,900
Property price
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Working hours: Monday to Friday 9:00am - 6:00pm (PST)

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The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional. Based on information from California Regional Multiple Listing Service, Inc. as of 2025-09-21 23:17:28 PST and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.

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