Here is another issue. Have a patio area that is 15'x25'. That the homeowner is wanting fixed. The problem is that there is a spot that is approximately 3'x4' in the center of it that is about 12" lower than the rest of the patio. It is hard to see in the picture, but it appears as the soil underneath that area has washed away. How would you fix it and could you or would you save the current stone to reuse. What would you bid on it? I am thinking about getting a sub to do it and want to see what y'all would estimate the cost to be first.