Patio with issues

[TruVineLawn]

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.

[FLCthes4:11-12]

I would figure a day to pull up all stone, clean somewhat, stack on pallet and excavate for new base. Then do as you regularly would Stone looks to thin to lay dry or even on a crusher run and mortar base. I would suggest concrete and and mortar the stone to it. That blue stone looks good with a dark mortar joint

[brickpuller]

Throw it away and start new. It will cost more to stack/clean/lay properly than it's worth.