Housing boom = design boom. The Design Center of the Americas in Dania Beach, FL -- at 775,000 square feet, the country's largest design campus -- launched its Designer on Call service eight years ago in response to consumer demand. "Years ago, here in South Florida people with second homes would say to a decorator, 'Here is a blank check. I'll see you in six months.' Now, consumers know want to be an active part of the process," said executive vice president Joan Kerns Kaufman.