QTS has filed to expand its in-development data center campus in Dallas.

First reported by the Dallas Morning News, QTS has filed with the Texas Department of Licensing and Regulation to develop a new building at its upcoming DFW2 campus near Wilmer.

Located at 1341 Sunrise Road in Lancaster, Dallas County, DC7 will span 363,500 sq ft (33,770 sqm) across two stories.

Construction on the $290 million project is set to start in September 2026 for a December 2027 launch date.

Blackstone-owned QTS filed to develop the first building at the Mason Road site bordering Lancaster in September 2024. Work on the first two-story, 413,725 sq ft (38,435 sqm) building, known as DC1, was set to start in November 2024 for a December 2025 completion date.

The company has since filed to develop multiple other buildings at the site.

QTS has an existing campus in the Irving area of Dallas. The 55-acre site, at 6431 Longhorn Drive, offers 147MW of capacity. It also operates one in Fort Worth that it acquired in 2017. Another QTS campus is in development around San Antonio.

Founded in 2003 and owned by Blackstone since 2021, QTS has dozens of data centers in operation and development across the US, UK, Netherlands, and Spain.