Is the International Residential Code available online, free, anywhere? If not, is there anything equivalent available -- at least good-enough for a DIY builder?
Looking at Abebooks I see that I can get 2000 and maybe 2003 or 2006 versions for less than $15.
How much different are these older versions compared to the latest version? How helpful is it to a DIY builder to have access to the International Energy Conservation Code?