My wife and I have been fans of your work since first getting the $50 Underground House book years ago (and following it with the greenhouse and y2k books later). We have 15 acres in northeast Georgia, and originally intended to try a PSP home. Unfortunately, we let ourselves be swayed by emotions (fell in love with a particular piece of land) and bought where building codes rule. My first question, then, would be: do you think it is possible to adapt the PSP method for a residence in building code country, or would it be pointless to even try because the costs would go up so much? Even if we cannot use PSP for a residence, we're still looking at it for a root cellar type of facility. My second question, therefore, would be: do you think PSP would be suitable for such a structure in our generally warm, humid climate with relatively high subterranean temperatures?
I don't know the answer to the first question, but concerning the second I think it would work well. You would need earth tubes for ventilation, and you would not want solar gain. You probably have to run the AC in January sometimes, so your main concern is cooling, which underground does very well.
it's a teeny, tiny, wafer thin ad:
This is an example of the new permies.com Thread Boost feature