Build-to-Suit: Tillman is developing sites in over 30 states across the US. Colocation: Tillman has a growing list of tower and rooftop sites for colocation. Real Estate Management: Tillman works with large landlords to unlock wireless carrier revenue. Ground Lease Buyout: Tillman can provide landlords with financial flexibility.  Tower Acquisitions: Tillman supports tower developers and tower owners by acquiring individual sites and tower portfolios.