Theres a local company up here that has a neat slant on home building, the houses are built in a factory in pieces small enough to be trucked down the road then bolted together on site.

The really different part about it though is that they build the house inside-out sort of, after the wall is framed the first thing they put on is the drywall, then they put in all the windows and electrical, from the outside, they they use a sprayed on vapour barrier, then they put in the insulation, then they put on the housewrap and finally the outer skin.

Apparently by doing it this way the structure is VERY well sealed since there are no perforations in the vapour barrier. Also, since the wood framing is on the inside of the vapour barrier it tends to swell and shrink less seasonally then if it was not sealed in.

Best of luck.

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