Telcom firm T-Mobile is expanding its Frisco regional headquarters, with room to house 350 more employees.

The cellular service provider is renting an additional 27,236 square feet of office space in its building near the Dallas North Tollway to accommodate the staff growth.

T-Moble currently has 750 employees in the Frisco office.

"The expansion will give us the space to hire 350 more employees, but we don't have immediate plans to do that much hiring," Steve Carlson, T-Mobile's senior communications manager said in an email.

T-Mobile leased more than 100,000 square feet in the Duke Bridges II building starting in 2005.

The firm previously had an office in Carrollton. The expanded office is just east of the Dallas Cowboys' new Star development on Warren Parkway.

"After going through a structured process of considering and evaluating numerous options for T-Mobile, we are delighted that we were able to structure an expansion and long-term renewal of their existing Frisco facility," Jeff Ellerman, vice chairman with CBRE in Dallas, said in a prepared statement.

Ellerman and CBRE's Scott Hobbs negotiated the new lease with Kurt Cherry and Shea Byers with PM Realty Group. The building is owned by Griffin Capital, a real estate investment trust.