43044 Unison Knoll Cir, Ashburn, VA 20148
Local realty services provided by:CENTURY 21 Advantage Gold
Listed by: ann m beck
Office: keller williams realty
MLS#:VALO2118914
Source:BRIGHTMLS
Price summary
- Price:$2,175,000
- Price per sq. ft.:$255.43
- Monthly HOA dues:$196
About this home
Set on a lush .93-acre homesite, this extraordinary 8,500+ sq. ft. Toll Brothers Henley Federal residence is a masterclass in scale, elegance, and modern refinement. A stately brick façade and beveled glass entry open to a breathtaking two-story foyer, where twin sweeping staircases establish a sense of timeless grandeur.
Every space has been thoughtfully curated—from the formal entertaining rooms with intricate millwork to the sunlit atrium retreat. At the heart of the home, the designer kitchen redefines luxury living, blending quartz surfaces, custom soft-close cabinetry, and a statement island built for gathering. The adjoining sunroom and expansive deck create a seamless indoor-outdoor experience.
The soaring two-story great room, anchored by a dramatic brick fireplace, offers both comfort and architectural impact, while a private library provides a quiet space for work or reflection.
Upstairs, the primary suite is a sanctuary unto itself—complete with a sitting room, an extraordinary 26-foot dressing room, and a spa-caliber bath crafted in porcelain and quartz. Each additional bedroom is a private suite, offering elevated comfort for family and guests alike.
The lower-level transforms into a full-scale entertainment destination, with a rec room, brick, gas fireplace, home theater, bar, finished storage/gym space, 2nd office, and 5th bedroom, full bath and additional guest accommodations.
Outdoors, the estate continues to impress with a fully fenced yard, mature fruit trees, professional landscaping, a 7-zone irrigation system and multiple spaces for gathering and relaxation.
With a 3-car garage, EV charging, smart home features, and a premier location near top-tier shopping, dining, and commuter routes, this home delivers an exceptional lifestyle at every turn....
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Home facts
- Year built:2004
- Listing ID #:VALO2118914
- Added:1 day(s) ago
- Updated:March 27, 2026 at 02:43 PM
Rooms and interior
- Bedrooms:5
- Total bathrooms:6
- Full bathrooms:5
- Half bathrooms:1
- Dining Description:Dining Area, Dining Room, Formal/Separate Dining Room
- Bathrooms Description:Primary Bath(s)
- Kitchen Description:Carpet, Crown Moldings, Double/Dual Staircase, Kitchen - Gourmet, Kitchen - Island, Kitchen - Table Space, Recessed Lighting, Upgraded Countertops, Wet/Dry Bar
- Bedroom Description:Carpet, Primary Bedroom, Walk In Closet(s)
- Basement:Yes
- Basement Description:Fully Finished, Interior Access, Walkout Level, Windows
- Living area:8,515 sq. ft.
Heating and cooling
- Cooling:Central A/C, Zoned
- Heating:Forced Air, Natural Gas, Zoned
Structure and exterior
- Year built:2004
- Building area:8,515 sq. ft.
- Lot area:0.93 Acres
- Lot Features:Backs - Open Common Area, Backs to Trees, Front Yard, Landscaping, Level, Open, Rear Yard
- Architectural Style:Colonial
- Construction Materials:Masonry
- Exterior Features:Deck(s), Extensive Hardscape, Patio(s), Sidewalks, Underground Lawn Sprinkler
- Foundation Description:Concrete Perimeter
- Levels:3 Story
Schools
- High school:ROCK RIDGE
- Middle school:STONE HILL
- Elementary school:LEGACY
Utilities
- Water:Public
- Sewer:Public Sewer
Finances and disclosures
- Price:$2,175,000
- Price per sq. ft.:$255.43
- Tax amount:$14,368 (2026)
Features and amenities
- Laundry features:Laundry
- Amenities:Carpet, Ceiling Fan(s), Chair Railings, Crown Moldings, Curved Staircase, Double/Dual Staircase, Recessed Lighting, Underground Utilities, Wet/Dry Bar
- Smart home:Yes
Parking
- Parking description:Attached Garage, Garage - Side Entry, Garage Door Opener, Inside Access, Paved Driveway
- Garage:Yes
- Garage spaces:3
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