Has anyone out there done a crawlspace to basement conversion? I have been debating it for a while. My house is shaped like an "H". I am thinking of clearing one of the sides of the "H" out into a basement. I would need to dig about 6 foot deep by 50 foot long by 14 foot wide. Has anyone used a company for this? Would you just hire some diggers to dig as long as they stayed the recommended distance away from your supporting structure? Any advice is appreciated.