9421 Thornberry Lane Dallas, TX $ 3,250,000
9421 Thornberry Lane
$ 3,250,000
Recently Listed New Construction
Open House 8/15 11am - 1pm
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9421 Thornberry Lane

Dallas, TX, 75220
$ 3,250,000
Bedrooms5 Baths5.2 Sq 7,610

Monthly Estimate*

$ 20,521

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Single Family Home for sale in Dallas, TX

for $3,250,000 with 5 bedrooms and 5 full baths, 2 half baths. This 7,610 square foot home was built in 2026 on a lot size of 0.334.

Introducing 9421 Thornberry Lane, a privately gated modern neo-classical estate by COZIE, offering 7,610 square feet of newly constructed luxury in Midway Hollow. Set on an expansive lot and framed by mature oak trees, the residence pairs a refined stucco exterior and steel framed windows with marble flooring, intricate crown molding, custom millwork and statement designer lighting throughout. A dramatic double height foyer with a sculptural curved staircase opens to the soaring great room, formal kitchen and inviting family living area. Designed for elevated entertaining, the home features a Sub-Zero, Wolf and Cove appliance package, oversized island, full catering scullery, walk-in pantry, bar and wine cellar. Three primary-quality suites—including two on the first floor—create exceptional multi-generational flexibility. The owner’s retreat includes a 14 foot recessed ceiling, fireplace, patio deck access, spa bath with a fully marble clad shower and a walk through closet with private laundry. Additional highlights include five ensuite bedrooms, a paneled study, dedicated home theater, game room, flex space, whole home audio system, three fireplaces, a second floor balcony, three car garage and built in outdoor kitchen. The expansive backyard offers exceptional space for a future pool, cabana and sports court. A rare opportunity to own a thoughtfully designed COZIE estate blending classical elegance, modern function and enduring luxury.

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Open House

8/15/2026 11:00 AM - 1:00 PM
8/16/2026 1:00 PM - 3:00 PM
9421 Thornberry Lane Dallas, TX
* Some states or local ordinances may prohibit Open Houses at this time, please confirm with your Weichert agent or local rep to confirm

Single Family Active

Price

$ 3,250,000

Bedrooms

5

Full Bath

5

Half Bath

2

Property Type

Single Family

Taxes

$ 11,523

Style

Contemporary/Modern

Lot Size

0.334

Year Built

2026

Town/City

Dallas

County/Region

Dallas

MLS | Web ID

21350337

Features
Interior
Interior Features Built-in Features Built-in Wine Cooler Chandelier Decorative Lighting Double Vanity Eat-in Kitchen High Speed Internet Available Pantry Walk-In Closet(s)
Flooring Hardwood Marble
Basement Y/N 0
Dining Areas 1
Living Areas 2
Half Baths 2
Total Bedrooms 5
Total Baths 7
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General
Heating Central
Cooling Central Air
Utilities City Sewer City Water
Possession Closing/Funding
Roof Composition
Appliances Built-in Refrigerator Dishwasher Disposal Gas Range Microwave Vented Exhaust Fan
Number of Garage Spaces 3
School District Dallas ISD
Pool Y/N 0
Year Built 2026
Architectural Style Contemporary/Modern
Levels Two
Property Subtype Single Family Residence
Subdivision Name Northwest Heights
Transaction Type For Sale
County Dallas
Property Type Residential
Construction Materials Stucco
Year Built Details New Construction - Complete
HOA Type None
Full Baths 5
Status Active
Directions From NWHWY turn North onto Thornberry drive down street; house is on your left.
City Dallas
Elementary School Name Walnuthill
High School Jefferson
Open House Public: Sat Aug 15 11:00AM-1:00PM
Elementary School Walnuthill
Standard Status Active
Listing Terms Cash Conventional
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Exterior
Waterfront 0
Exterior Features Balcony Built-in Barbecue
Parking Features Driveway Garage Tandem
Lot Size Less Than .5 Acre (not Zero)
Foundation Slab
Structural Style Single Detached
Garage Y/N 1
Attached Garage Y/N 1
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Internal Only
Street Number 1 9421
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* Excluded Features
List By
Piper Young

Listing Agent

Christie's Lone Star

Broker

Affordability Calculator

$21,481
Per Month
96%
4%
0%
Monthly Principal & Interest
$20,521
Monthly Property Taxes
$960
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
286982 Elementary School
286523 Middle School
Unknown High School High School
Pricing History
DatePricePrice ChangeDescription
8/4/2026$3,250,000 Listed Price

Map


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9421 Thornberry Lane, Dallas, TX, 75220 is a Single Family Home for sale at $3,250,000 with 7,610 sqft and a lot size of 0.334. 9421 Thornberry Lane has 5 bedrooms, 5.2 baths, and was built in 2026. The property's zip code is 75220 which is in Dallas, TX