My deck/porch is sinking in the front. I'm guessing 4inches in 10 years on one corner. The covered porch roof is attached to the house roof. To complicate matters, there is a Hugh boulder wall approximately 10foot in front of the porch front which drops 4/5 ft to ground level. These are Hugh boulders and can only be moved by heavy equipment. The porch needs to be lifted back up and the foundation posts reinforced somehow. Does anyone have any good cost effective ideas on how to fix this problem without destroying the landscaping?
