Greetings! This is a good initiative, but before erecting the foundation you need to make waterproofing. We applied for such a service in this https://www.pomwaterproofing.ca/ company. Three years ago, we already had a positive experience in cooperation with this company, the results of which continue to delight us to this day. In addition to the invariably high quality of their work, it was significant for us that the previous estimate was slightly different from the final cost of work.