Our t 2 real estate office is located at 15400 Knoll Trail Dr. # 109 Dallas TX 75248. We are Just North of Arapaho Rd. on Knoll Trail in far North Dallas on the Addison city border. (Knoll Trail is also called Monfort Dr to the South side of Arapaho.) From the Dallas North Tollway - exit Beltline to the right, then turn at first stop light left on Monfort and continue past Arapaho, you will see the 6 story office building to your left just past railroad tracks.