Hit by political turmoil, Pruksa Real Estate, Thailand's largest developer of townhouses which Thongma Vijitpongpun founded in 1993, saw condo presales fall by over a third in a recent quarter as potential buyers faced trouble qualifying for loans. To boost sales, Pruksa is helping customers find co-signers for their mortgage applications. Thongma likes to read books on Buddhist philosophy and tend to the vast fruit orchards at his home.