For the last twenty years, Mr. Bultman's practice has included rehabilitating and converting unwanted timber framed structures. Mr. Bultman has adapted more than forty antique barns. Many are houses; others are offices, restaurants, and artist studios. When the barns are still wanted by the owners, Mr. Bultman assists with the barns' repair strategy and rehabilitation efforts. So some barns are still barns. Mr. Bultman is the current vice-president of the National Barn Alliance and serves on the Michigan Barn Preservation Network's Technical Advisory Committee. He is also active with the Timber Framers Guild and serves in the Timber Framers Engineering Council. He is also a member of a number of other barn preservation organizations including the Friends of Ohio Barns and serves on AIA Michigan's Government Affairs Committee.