It's on a slow pace, but it's happening. The State of Florida is slowly movign to deal with some of the issues that comes with population growth and limited water and land resources. The Orlando Sentinel writes about some of the current troubles with building green
She said her first difficulty was finding an architect familiar with green standards. She couldn't locate the right one in Florida and ended up hiring one from Atlanta. The next obstacle was locating materials. She found some locally but ended up paying shipping costs for many delivered from the West Coast.
Hopefully as the trend to green grows, those problems will vanish. In fact, if anyone wanted to come up with a green modular house system that was also hurricane cat-4 rated, I'm sure they'd have more business than they could handle. Just keep the costs down around $150 sq ft installed if possible.