Some people have big house plans for narrow lots. Since your going to try to utilize a narrow lot your not going to have any yard space. So the best thing to to is give the house many floors to make up for the lack of square feet. For more info on this topic you can check out www.dreamhomesource.com/narrow-lot/narrow-lot-house-plans.hwx. Also you can look here too
. www.eplans.com/features/narrow-lot.hwx.