The realty company, currently located at 850 E. SH 114, Southlake, will occupy the bottom two floors of the four-floor, 115,500-square-foot office building when it opens spring 2017.
Keller Williams Southlake has more than 600 agents.
Located at the northwest corner of SH 114 and Kimball Avenue, The Offices are part of a larger mixed-use commercial development named Kimball Park.
Kimball Park will feature restaurants, retail, offices and a 175-room Cambria Hotel and Conference Center, which is expected to open in September.
Cambria will be the city's second hotel.