"MDianaSims;c-18147419" wrote:
Before you expand the basement you need to lower it. Basements can be lowered independently of the rest of the house. Make sure there is enough room for longer stairs in the basement.
Once you've lowered the basement to ground level or below, you can expand it without affecting the terrain.
This is correct. Click inside your basement and grab the foundation lowering tool and lower it one notch, check to see if that corrects it if not do one more and keep going until your exterior terrain is level.
