The cost of digging a basement would depend on the depth of the basement, whether it is an existing house, and how large it it. Thsi cost varies in the different areas of the country also. You would see the cost of this depend on many different reasons. This project can cost for a normal size basement anything from 1500-10000 and this will depend on whether it is a before the house is built or
. after and whether the house if big or small. You can discuss a cost like this with a contractor for your individual situation.