Derby Park Clubhouse Addition in Grand Prairie, TX

The Derby Park Clubhouse Addition is a new 3,431 sq ft wood-frame structure located at 606 W. I.H.-30 in Grand Prairie. This one-story building features a second-level mechanical mezzanine and is situated within an existing apartment complex. The exterior finish consists of brick and hardy material, accompanied by new landscaping, irrigation systems, and ADA improvements to the adjacent parking lot.

Obsidian Derby Park Owner, LLC holds the record as the owner and developer for this project. Simply Custom Dev., LLC is the registered design firm. The estimated cost for the construction is $850,000, which calculates to $248 per square foot. This cost per square foot is above the Dallas County median of $125 for similar new construction filings. The total estimated cost is close to the county median of $950,000 for this type of work.

The project is privately funded on private land for private use. The registered accessibility specialist for the filing is Marion J Johnson. The project was registered with TDLR in May 2025, and plan review was completed in the same month. Construction was scheduled to begin in June 2025.

The scheduled completion date on the filing was June 2026. However, TDLR has not yet recorded a final inspection, so the current state of the site is not confirmed in the public record. The scheduled build window of 364 days is longer than the Dallas County median of 243 days for new construction projects. This timeline reflects the scope of work, which includes significant site improvements and structural additions to the existing complex.

Simply Custom Dev., LLC has two other TDLR-registered projects totaling $3,950,000. These include the Israel of God in Dallas, estimated at $3,500,000, and the Guide Right Foundation in Dallas, estimated at $450,000. Both projects are registered with TDLR, with the Guide Right Foundation marked as review complete. The Derby Park Clubhouse stands out as a distinct residential amenity project within the Grand Prairie ZIP code 75050.

According to U.S. Census ACS 2023 five-year estimates for ZIP 75050, the population is about 44,402. The median household income is $70,484, and the median owner-occupied home value is $224,400. Housing in this area is mostly renter-occupied, with 17,286 housing units recorded. The Dallas County unemployment rate was 3 percent in August 2026, lower than a year earlier. These demographic and economic figures provide context for the private development of community amenities in the region.