The reason I know it higher end building can be the price I gave, is I started building my house five and a half years ago, right after the GST went up. We managed $100 a square foot, and ours wasn't the most high end. Even though it's nice...it's a middle priced house. It has some high end finishing, and some high end structural quality, but it is definitely not high end.
You couldn't build our house for that price today...probably $120 a square foot.
The labor isn't here any more, Tie One On, at the price you quoted. After the mini housing boom that ended when the economy sunk, all the cheap labor went home. They didn't come fro me Belize, probably El Salvadore and Honduras. It costs a lot to do anything in San Pedro, with the high cost of fuel, steel, and Belizean labor.
Ambergris Caye isn't cheap anymore, even if it ever was.