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Harrison Lilly

| Harrison Lilly Realty Dallas | Harrison Lilly Realty | PLACE

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5547 Walnut Hill Ln , Dallas, TX 75229
$45,000,000
Est. Payment: $252,753.38/mo
6 Bed
8 Bath
13800 Sqft
2.03 Acres
Status: active | Days on site: 41
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House Description

Dallas has never seen a home like Casa de Ondas. The award-winning architectural masterpiece, with over 14,000 square feet of interiors, was custom-built and conceptualized over four years, bringing together acclaimed design talent from across the globe. Marking the acclaimed international architecture firm SAOTA’s first Dallas project, this sculptural triumph rises from a verdant two-acre lot within Preston Hollow’s coveted Crespi Estate, an exclusive gated community of just four residences. Its wavy roof, inspired by surrounding tree canopies, creates a striking dialogue between architecture and nature as shifting light casts soft shadows across locally quarried limestone. Past the water lily pond, a soaring pivot door opens to a glassy hallway and dramatic double-volume living space, the heart of the home for everyday living and extraordinary entertaining. It flows to more than 5,000 square feet of covered terraces, a custom pool and spa, and lush gardens, blurring the line between indoors and out. A shimmering double-sided fireplace, sumptuous bar with an 8,000-pound marble island hand-chiseled in Italy, brass-wrapped temperature-controlled wine cellar, and chef’s kitchen with Miele appliances, designer pantry and Taj Mahal slabs elevate every gathering. The lower level reveals a hotel-quality underground speakeasy, second bar, golf simulator with privacy switch-glass views into the four-car collector’s garage, while outdoors a custom pool slide, volleyball and sport courts, outdoor kitchen and fire pit invite endless enjoyment. The main-level primary suite offers an indoor-outdoor shower, solid-stone freestanding tub, fluted fireplace and oversized Poliform closet. An expansive gym with steam room, sauna and massage room completes the wellness experience. Immersed in hand-selected plantings with no neighbor in sight, Casa de Ondas is a once-in-a-lifetime work of art where architecture, nature and extraordinary living move as one.

Highlights

Listed by Alex Perry , and Chad Barrett , Allie Beth Allman & Assoc. , North Texas Real Estate Information Systems

Property Type

Residential

Lot/Acreage
2.03

Year Built

2025

County

Dallas

Neighborhood

Crespi Estates

School District

Dallas ISD

Listing ID

21370233

Questions about this listing?

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Interior Features

Bedrooms and Bathrooms
  • ▪ Bedrooms:6
  • ▪ Bathrooms:8
  • ▪ Full Bathrooms:6
  • ▪ 1/2 Bathrooms:4
Appliances:Built-in Coffee Maker, Built-in Gas Range, Built-in Refrigerator, Commercial Grade Range, Commercial Grade Vent, Dishwasher, Disposal, Gas Range, Ice Maker, Microwave, Convection Oven, Double Oven, Refrigerator, Tankless Water Heater, Warming Drawer, Generator
Air Cond:Central Air,Electric
Fireplaces:Gas,Gas Starter
Floor:Stone
Other:
  • ▪ Additional:Built-in Features, Built-in Wine Cooler, Cable TV Available, Chandelier, Decorative Lighting, Double Vanity, Dumbwaiter, Eat-in Kitchen, Flat Screen Wiring, High Speed Internet Available, Kitchen Island, Open Floorplan, Pantry, Smart Home System, Sound System Wiring, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar, Second Primary Bedroom, Master on Main

Exterior Features

Lot:Acreage,Interior Lot,Landscaped,Lrg. Backyard Grass,Many Trees,Sprinkler System,Tank/ Pond,1 to < 3 Acres
Roof:Tar/Gravel
Others:
  • ▪ Additional:Courtyard, Covered Patio/Porch, Fire Pit, Lighting, Outdoor Kitchen, Outdoor Living Center, Outdoor Shower, Private Entrance, Private Yard, Sport Court, Uncovered Courtyard, Preowned
Parking Features:Garage,Garage Door Opener,Garage Faces Side
Principal Interest
$252,753
Taxes
$28,688

Home Price

$45,000,000

Loan Details

30 yrs
7.542%

Down Payment

20%
$9,000,000
All calculations are estimates and provided by Blueroof360. Today’s Rates provided by Blueroof360. Information and interactive calculators are made available to you only as self-help tools for your independent use and are not intended to provide investment or tax advice. We cannot and do not guarantee their applicability or accuracy in regards to your individual circumstances. All examples are hypothetical and are for illustrative purposes. We encourage you to seek personalized advice from qualified professionals regarding all personal finance issues.
Monthly Price:
$252,753.38

Principal

Taxes

Principal Taxes HOA Total
Monthly $252,753.38 $28,687.50 $0.00 $281,440.88
Yearly $3,033,040.53 $344,250.00 $0.00 $3,377,290.53
Total $90,991,215.83 $10,327,500.00 $0.00 $101,318,715.83

Today's Rates

30 Year

7.54%

20 Year

7.2%

15 Year

6.73%

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Market insight data is pulled from the same city as the listing being viewed (Dallas, TX).

The schools listed are within a 2-mile radius of the property; however, attendance is not guaranteed. Please contact the local school district to confirm zoning and enrollment options.

Information provided by North Texas Real Estate Information Systems Multiple Listing Service, and is deemed reliable but not guaranteed accurate.

IDX service by Blueroof 360

Data last updated: 2026-10-11T08:05:48.823Z

© 2026 North Texas Real Estate Information Systems