I am in the process of planning an addition for my house. My house is built on a hill with the garage about 50 feet uphill from it. We have a wrap around driveway that passes close to the garage. My plan is to put the addition on the back of the house into the hill (and I know how you all like pictures, so here you go)
The problem is if I keep the original flat area in front of the garage, the new foundation will be about 1ft below grade. I guess I could either A) change the grade or B) raise the foundation
A) I'd have to remove 2+ feet of soil to get proper spacing and drainage, will this be too awkward in terms of driving (about a 7% grade)
B) With a 12" thick foundation wall, Local codes say I can raise 4" of that to a maximum of 14" for the stud wall to sit on. Would this reduce the grading required to something more acceptable?
Alternatively, if I step the foundation, is a ledger a suiltable way to support the floor joists?
C) any other suggestions are welcome!