Seller to seal the needed sides of the siding. Call Steve Youde at 406-439-5234 or your real estate professional. 2 inch sprayed in foam in all exterior walls plus 4 inch batting. All exterior walls are 2 x 6's. Back half of the house is set into rock which keeps the temperatures very even in the basement without requiring supplemental heating/cooling. Dual furnace and air conditioning. In the corner of the kitchen, it is plumbed for an indoor grill. On the deck, it is plumbed for an outdoor kitchen with gas as well. The two wires in the dining room is because the seller was going to put in a shadow display box. 27 inches of insulation in the ceiling.