Profile: Thrifty Portable Buildings, Inc. offers wood or steel framed portable buildings, gazebos, greenhouses and playhouses. We provide site-built steel buildings built on concrete slabs or conventional floors. Our one-piece modern hunting fortress has no seams to leak, rattle, rust or rot. Our roofings are made with aluminum, steel and asphalt shingles. Our siding options include vinyle, cedar, aluminum and painted wood.