TUTORIAL :: Adding basements to existing houses with foundation :: No demolishing necessary!

Thank you, Spartan, for a fantastic tutorial that let me put a basement in my legacy house! It took me a few times to get it usable, but that was my learning curve as the first time of using cfe . For anyone trying it & having problems with their Sims not bring able to use the stairs, can I suggest having walls up, so you realise you forgot to delete that wall your Sims can't walk through... :-)