<P> The home features an eight kilowatt solar array and a vacuum insulated hot water system as well as thermal solar systems for heating water . High performance glass and cellulose insulation is used in the wings to create an energy efficient building envelope . </P> <P> The finished main house incorporates only the wings of the 747 - 100 . Hertz also designed many outlying buildings that use the remaining portions of the 747 fuselage . An art studio building will use a 50 ft. long section of the upper fuselage as a roof, while the remaining front portion of the fuselage and upper first class cabin deck will be used as the roof of a guest house . The lower half of the fuselage, which forms the cargo hold, will form the roof of a barn . A meditation pavilion will be made from the entire front of the airplane, measuring 28 ft. in diameter and 45 ft. tall, in which the cockpit windows will form a skylight . </P> <P> The Boeing 747 - 100 was a Trans World Airlines (TWA) aircraft (N93106). Its construction number was 19672 and it was the twenty - eighth 747 built . Boeing delivered the 747 to TWA on April 3, 1970, at a cost of approximately $25,000,000 . It flew with TWA until 1992, when it was retired to the old El Mirage Air Force Base, before being purchased by Tower Air for its scrap value of $30,000 . </P>

How much did it cost to build the wing house