Promontory - San Martin Shell in Plano, TX

The Promontory on Preston project, identified in TDLR filings as Promontory - San Martin Shell, is a completed renovation located at the northeast corner of Preston Road and Nueces Drive in Plano, Texas. Registered with the Texas Department of Licensing and Regulation in November 2023, this $1,500,000 project involved shell building construction and related site work for the 6,600-square-foot structure. The owner and developer of record is Promontory LTD, with design services provided by GFF Architects. The project sits on private land for private use, funded entirely through private financing.

Construction Timeline and Scope

Construction began in January 2024, with a scheduled completion date of December 2024. The project achieved its final TDLR accessibility inspection in December 2024, confirming that the work meets state accessibility standards. This timeline represents a 365-day build window, which is longer than the Collin County median of 92 days for similar renovation and alteration filings. The cost per square foot for this project is $227, which is above the county median of $78 for its type.

Market Context and Comparison

In Collin County, the median estimated cost for a renovation or alteration project is $221,680, with the middle half of projects ranging from $120,600 to $500,000. This project’s total estimated cost of $1,500,000 places it in the top quarter of such filings in the county. The size of 6,600 square feet is also larger than the county median of 3,423 square feet. Other registered projects in the Plano area include SEC Custer Frontier, Ltd., City Futsal Allen, Bank 7 Frisco Branch, Blue Ridge Intermediate School, and the Alliance Old Mill Logistics Center.

Design Firm Portfolio

GFF Architects, the design firm of record for this project, has six other TDLR-registered projects totaling $95,139,744. These include the Rees-Jones Library of the American West in Dallas, valued at $80,000,000; the Dallas Theological Seminary Heritage Center in Dallas at $1,420,244; and the Local Good Community Recreational Park at Chase Oaks Church in Plano for $2,800,000. Additional projects by GFF Architects include the Young Men's Leadership Academy at Fred F. Florence Middle School in Dallas and Victory Park - Building D100 in Dallas.

Local coverage and third-party sources have described Promontory on Preston as a retail development in Plano. A post by ComingSoonTexas mentioned preparations for a store at 5900 Preston Road, while DUWEST described the property as retail space for lease. Fritz Duda Company has also referenced the location, noting its access from Preston Road and Spring Creek Parkway. The U.S. Census ACS 2023 five-year estimates for ZIP code 75093 indicate a population of about 46,491 and a median household income of $121,226. Collin County unemployment was 4.1 percent in September 2026.