But just 500 more square feet, that would be lovely. I need to price putting up a winterized shed versus getting the basement dug out properly. LIke dug, underpinnings and a proper concrete pad and some plugs? We could bung all our tools down there, Wouldn't even need anything fancy.
That said, my sort of dream is to build a shed out of SIPs just, you know, to have done it (cause they fascinate me).