i've done the ducting end of them, i'm a tin basher by trade. everyone seems to like them. all your running is a fan or pump with the in floor systems. up here we need a electric furnace for backup though as they only work to -5 degrees celsius
http://www.designamerica.com/proplans/15031ga.htm
this is the 3 car garage i'm looking at. just a big box, so it should be pretty cheap to build. plus i do HVAC and plumbing for a living and know a bunch of contractors, so that should keep costs down as well.
i'm gonna buy some property, and i want to build a garage with an apartment above.
i've been looking at a few plans and theres a couple i like. one is a 28' x 26' 2 car garage and the other is a 40' x 26' 3 car garage. i wonder how much more $$ the bigger one would be and if the small one is big...