Groundworks Toronto

Went through several quotes with Clarke, ultimately settling on a solution that insulated the crawlspace under the house, covered an open section with some concrete, and most importantly, added a dehumidifier piped right into the waste water. This gave me a lot more comfort storing things down there, and I might ultimately add the pump and drainage to take care of any water that might still come through the wall.
Only downside was there was a bit of miscommunication between the salesman and the installer as to the scope, but it was all done as promised, so I was happy, and have already recommended them to a neighbour who used them.