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 and in close proximity to Los Medanos Community College. 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
For sale
$879,900
4007 Oak Knoll St, Antioch, CA 94509
5beds
4,270sqft
Est.:
Residential, Single Family Residence
Built in 2011
10,018.8 Square Feet Lot
$871,000 Zestimate®
$206/sqft
$-- HOA
What's special
Rolling hillsMature abundant fruit treesGrand primary bedroomSolid granite counter topsKitchen cabinetryExpansive two-storyPartial delta views
- 97 days |
- 892 |
- 41 |
Zillow last checked: 8 hours ago
Listing updated: October 14, 2025 at 01:19am
Listed by:
Juan Carlos Mandrile DRE #01327476 925-642-1423,
Exp Realty Of California Inc.
Source: CCAR,MLS#: 41110312
Tour with a local agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 5
- Bathrooms: 4
- Full bathrooms: 3
- Partial bathrooms: 1
Rooms
- Room types: 1 Bedroom, 0.5 Bath, Main Entry, 4 Bedrooms, 3 Baths, Loft, Family Room
Bathroom
- Features: Stall Shower, Tile, Tub, Sitting Area
Kitchen
- Features: Stone Counters, Dishwasher, Double Oven, Eat-in Kitchen, Disposal, Gas Range/Cooktop, Ice Maker Hookup, Kitchen Island, Microwave, Oven Built-in, Pantry, Range/Oven Built-in, Wet Bar
Heating
- Zoned
Cooling
- Central Air
Appliances
- Included: Dishwasher, Double Oven, Gas Range, Plumbed For Ice Maker, Microwave, Oven, Range, Gas Water Heater
- Laundry: Laundry Room, Upper Level, Common Area
Features
- Storage, Pantry, Wet Bar
- Flooring: Tile, Carpet
- Windows: Window Coverings
- Number of fireplaces: 2
- Fireplace features: Family Room
Interior area
- Total structure area: 4,270
- Total interior livable area: 4,270 sqft
Video & virtual tour
Property
Parking
- Total spaces: 3
- Parking features: Attached, Off Street, Side Yard Access, Tandem, Boat, Garage Faces Front, On Street, Garage Door Opener, RV Access/Parking, RV Possible
- Attached garage spaces: 3
- Has uncovered spaces: Yes
Features
- Levels: Two
- Stories: 2
- Exterior features: Entry Gate
- Pool features: None
- Fencing: Fenced,Wood
- Has view: Yes
- View description: Delta, Hills
- Has water view: Yes
- Water view: Delta
Lot
- Size: 10,018.8 Square Feet
- Features: Cul-De-Sac, Other, Back Yard, Front Yard, Side Yard
Details
- Parcel number: 0896000387
- Special conditions: Standard
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Contemporary
- Property subtype: Residential, Single Family Residence
Materials
- Stucco
- Foundation: Slab
- Roof: Slate
Condition
- Existing
- New construction: No
- Year built: 2011
Utilities & green energy
- Electric: No Solar
- Sewer: Public Sewer
- Water: Public
Community & HOA
Community
- Subdivision: Black Diamond
HOA
- Has HOA: No
Location
- Region: Antioch
Financial & listing details
- Price per square foot: $206/sqft
- Tax assessed value: $521,250
- Annual tax amount: $8,355
- Date on market: 9/4/2025
Estimated market value
$871,000
$827,000 - $915,000
$4,783/mo
Price history
Price history
| Date | Event | Price |
|---|---|---|
| 9/4/2025 | Listed for sale | $879,900+112%$206/sqft |
Source:  CCAR #41110312 Report a problem | ||
| 11/23/2011 | Sold | $415,000$97/sqft |
Source: Public Record Report a problem | ||
Public tax history
Public tax history
| Year | Property taxes | Tax assessment |
|---|---|---|
| 2025 | $8,355 +2.2% | $521,250 +2% |
| 2024 | $8,176 +0.3% | $511,031 +2% |
| 2023 | $8,148 +1.6% | $501,012 +2% |
Find assessor info on the county website
BuyAbility℠ payment
Est. payment
$5,406/mo
Principal & interest
$4247
Property taxes
$851
Home insurance
$308
Climate risks
Neighborhood: 94509
Nearby schools
GreatSchools rating
- 3/10Turner Elementary SchoolGrades: K-5Distance: 1.3 mi
- 2/10Antioch Middle SchoolGrades: 6-8Distance: 2.8 mi
- 3/10Antioch High SchoolGrades: 9-12Distance: 2.6 mi
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