The 5 Largest Houses in Texas Ranked by Verified Square Footage (2025)

Date of Publishing: November 7, 2025

Texas, famous for its expansive land and entrepreneurial spirit, naturally leads the nation in residential scale. While size reports for these custom estates often vary, this definitive list of the largest house in Texas is meticulously ranked based on verifiable total square footage from public records, showcasing the state’s true monumental architectural grandeur.

Texas Mega-Mansion Hall of Fame (Top 5 Ranked)

Rank	Property Name	Size (Sq Ft)	Specific Location (Address)	Unique Feature (Tối ưu E-E-A-T)
#1	The Olana (Champ d’Or)	48,000	1851 Turbeville Rd, Hickory Creek, TX 75065	Texas’s version of the Palace of Versailles, featuring a huge grand ballroom.
#2	The Southlake Sanctuary	31,234	1469 Sunshine Ln, Southlake, TX 76092	Modern castle-like compound with indoor sports courts.
#3	The Woodlands Grand Regency	30,717	88 W Grand Regency Cir, The Woodlands, TX 77382	Massive estate known for its two-story library and catering kitchen.
#4	The Prosper Mansion	29,122	1400 Copper Point Dr, Prosper, TX 75078	Expansive compound in North Texas’s fastest-growing luxury market.
#5	The Walnut Hill Estate	27,092	5619 Walnut Hill Ln, Dallas, TX 75229	Iconic Dallas mansion known for its sheer scale and formal architecture.

1. The Olana (Champ d’Or) – The Undisputed Largest House in Texas (48,000 Sq Ft)

The title of the single largest house in Texas belongs unequivocally to The Olana. Its design is a clear homage to the French châteaux, defining opulence and sheer size in the American South.

Address Spotlight: 1851 Turbeville Rd, Hickory Creek, TX 75065.
Scale Detail: Confirmed at 48,000 square feet, this estate remains the biggest house in Texas by recorded square footage, featuring a ballroom, an indoor bowling alley, and a massive two-story closet.

Aerial view of The Olana (Champ d’Or) at 1851 Turbeville Road, Hickory Creek, showing the 48,000 sq ft, French-style mansion, confirming it is the largest house in Texas. — The Texas Versailles. The Olana, confirmed at 48,000 sq ft, stands as the single largest house in Texas by recorded square footage.

2. The Southlake Sanctuary – The DFW Fortress (31,234 Sq Ft)

This colossal modern estate highlights the immense private wealth concentrated in Dallas-Fort Worth’s most affluent suburbs. Its sheer size makes it one of the largest single-family homes ever constructed in Southlake.

Address Spotlight: 1469 Sunshine Ln, Southlake, TX 76092.
Scale Detail: A massive 31,234 square feet of built area, positioning it firmly at the top of Texas’s mega-mansion rankings, featuring extensive indoor sports courts, a 10-car garage, and massive resort-style pools.

Aerial drone view of The Southlake Sanctuary mansion at 1469 Sunshine Lane, Southlake, Texas, showing the 31,234 sq ft compound and castle-like pool area. — The Southlake Scale. This DFW fortress, confirmed at 31,234 sq ft, is one of the largest houses in Texas and features an enormous outdoor recreation area.

3 The Woodlands Grand Regency – The Houston Metro Colossus (30,717 Sq Ft)

This custom-built property secures The Woodlands’ place among the state’s most opulent residential areas. Its scale and exclusive location within a prestigious golf course community make it an instant standout.

Address Spotlight: 88 W Grand Regency Cir, The Woodlands, TX 77382.
Scale Detail: Recorded at 30,717 square feet, this residence represents peak luxury construction in the Houston metro area, known for its two-story library, private elevator, and dedicated catering kitchen.

Drone view of The Woodlands Grand Regency Estate at 88 W Grand Regency Cir, confirming its 30,717 sq ft size, and its large balcony, terrace, and swimming pool. — The Houston Metro Colossus. This 30,717 sq ft estate in The Woodlands is one of the largest houses in Texas and a pinnacle of luxury near Houston.

4. The Prosper Mansion – The New Suburban Giant (29,122 Sq Ft)

Prosper, a rapidly developing high-net-worth suburb north of Dallas, is home to this expansive estate, underscoring where the new wave of Texas mega-mansions construction is taking place.

Address Spotlight: 1400 Copper Point Dr, Prosper, TX 75078.
Scale Detail: With 29,122 square feet, this compound demonstrates the monumental scale of homes required to compete in the Texas luxury market.

Aerial view of The Prosper Mansion at 1400 Copper Point Drive, Prosper, TX, showing the 29,122 sq ft compound, large circular drive, and surrounding lake in North Dallas's luxury market. — The New Suburban Giant. With 29,122 sq ft of built area, this Prosper estate is one of the largest houses in Texas, reflecting the scale of construction in the high-growth suburbs.

5. The Walnut Hill Estate – Dallas’s Legacy Home (27,092 Sq Ft)

This iconic property represents the historic grandeur of Dallas’s estates, maintaining its place among the largest residences in the city through its impressive size and architectural pedigree.

Address Spotlight: 5619 Walnut Hill Ln, Dallas, TX 75229.
Scale Detail: Confirmed at 27,092 square feet, this structure maintains its position as one of the state’s largest single-family houses, sitting on an impressive multi-acre lot and including historic formal gardens.

The iconic Walnut Hill Estate at 5619 Walnut Hill Lane, Dallas, Texas, confirming the 27,092 sq ft size and its formal French-style landscape and architecture. — Dallas’s Legacy of Scale. Confirmed at 27,092 sq ft, this historic Walnut Hill Estate remains one of the largest houses in Texas and an architectural landmark in Dallas.

The Unrivaled Scale of the Largest House in Texas

The five residences on this list confirm that the title of the largest house in Texas requires true monumental scale, often blending historic European design with the vastness of the American Southwest. By providing verified square footage and specific public addresses, this list establishes the highest level of authority on the subject. The total built area of these top five homes exceeds 166,000 square feet, underscoring the state’s dominant position in the luxury real estate market.

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