Same here. I am going to offset the carbon thing in other ways, wooden buildings are just too dangerous. A 3 year with "mommy look how cool this is" can burn the house down in 3-4 minutes. Who has the FD right outside the house and ready to go 24/7?.
A concrete house on the other hand might need the plaster taken down and you're ready to re-plaster and move in. Or just clean and paint. Plus no squeaky stairs, ever :)