KDC Files $1.06B in Construction Plans for AT&T’s 2.2 Million SQFT Plano Headquarters, Targets Dec. 1 Start

State construction filings from developer KDC price the buildings, parking garages and central plant at AT&T's future Plano headquarters at roughly $1.06 billion, with work set to begin Dec. 1 and finish in March 2029, months after the company's targeted first move-ins.