Prosper Flex Park

Prosper Flex Park - Building 03 is a new, ground-up industrial distribution warehouse located at 621 West Prosper Trail in Prosper, Texas. The structure spans 38,500 square feet and is part of the larger Prosper Flex Park development. The project was registered with the Texas Department of Licensing and Regulation (TDLR) in September 2026, with construction scheduled to begin in October 2026 and completion targeted for July 2027.

The owner of record is Prosper Trail Commercial LP, which is also developing three other buildings within the same Prosper Flex Park complex. Each of these associated projects, including Buildings 01, 02, and 04, is registered with TDLR and shares an estimated cost of $3,464,878. The design firm of record for Building 03 is GSR Andrade Architects, which has also been involved in other logistics and commercial projects in the DFW area, including facilities in Frisco and Dallas.

Project Scope and Cost

The estimated total cost for this specific building is $3,464,878, which calculates to approximately $90 per square foot. This cost per square foot is below the Collin County median of $120 per square foot for comparable new construction filings. However, the total estimated cost places the project in the top quarter of costs for similar new construction projects in the county, which typically have a median estimated cost of $800,000. The scheduled build window of 273 days is longer than the county median of 212 days for projects of this type.

The project is privately funded on private land for private use. Stephen D Macphie is the registered accessibility specialist for this filing. The TDLR status is listed as Project Registered, indicating that the plan review is pending and the construction timeline is active.

Local Context

Prosper is a municipality in Collin County with a ZIP code 75078 population of approximately 46,857 according to U.S. Census estimates. The area has a median household income of $187,634 and a median owner-occupied home value of $650,600. The housing market is predominantly owner-occupied. The Collin County unemployment rate was 4.6 percent in July 2026, which is higher than the rate recorded a year earlier. This industrial development contributes to the growing logistics and commercial infrastructure in the Prosper area.