Run HDMI cables and wall electric outlets where the TVs will be mounted on the wall. Also, have cable and telephone outlets run to every room.

My house was built in 93 (not by me) and it has a seperate office. The only room in the whole house without a telephone jack is the office. How is that???? I have a jack in the laundry room and outside on the porch!!!!! The one room that would need a telephone jack for a fax or a telephone is the office.