Of course there's always a catch. The question is, what constitutes a permanent structure?

http://abcnews.go.com/blogs/business/2012/10/canadian-town-s...
Canadian Town Sells $10 Plots of Land

The plan is pretty straightforward: To buy a property, wannabe homeowners have to sign an agreement and put down a $1,000 deposit. Once a lot is purchased, owners have 90 days to begin construction, and 12 months to complete it. As soon as the town receives the occupancy permit, they will refund $990 of the original down payment.
“You don’t have to live here full time, but you do need to put up a permanent structure,” said Chalmers.