When the doors swung open recently to the Mid-South's first residential "green house", visitors inside the remarkable home were sheltered by an energy-efficient roof provided by Memphis, TN-based Varco Pruden Buildings, a division of BlueScope Buildings North America, Inc. The TERRA house, which had its grand opening February 27, 2009, is applying for platinum level LEED certification from the U.S. Green Building Council. If the certification is granted, it would be the first such residence in the state of Tennessee.