I'm in North NJ. The home was build in 1905 on a stone foundation. During heavy rains - like we experienced in June - I get water in the basement. No more than 3/4" pooled in the lowest sections. The back yard slopes towards the house.
We have forced air heat.
I want to do a 20' square area off the back for a family room and an office area. Any plumbing changes will be against existing walls and only for a clothes washer. If we can swing it - a second floor addition to expand a small bedroom into a nice master bedroom.
I am in the planning stages and am meeting with the contractor shortly to ballpark some numbers.
Based on this information what do you folks recommend? Slab? Crawlspace?