John,

Thanks for your interest in our project, and your kind words. The areas of the existing house already had an adequate foundation and footing for the parts we added - we had to investigate that early in the project. Of course, we poured new footings and foundations for the parts of the project that were either outside the original perimeter, or part of the pre-existing carport.

At the homeowner's request, I cannot give out the cost of the project. But, as you can probably already guess, it was extensive.