Shed sunk and too expensive to have raised

How big is the slab? It might be small enough to lift yourself and well if you mess up it is a shed and not your house so not important enough to pay a professional.

Have you priced having the slab lifted using expanding foam. My sister had a patio lifted a couple of inches and it cost $2-3000.

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More details and pictures will help tremendously. I don't understand why it is $12,000 to lift a shed?

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It's b/c 2 sides are on property lines so lots of tunneling.

Can you lift it without lifting the slab and pour a new slab on top?

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Shed sunk and too expensive to have raised

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do it yourself, all you need is some lumber and a 2-ton floor jack

jack it up ans run some boards under it so its about 12" off the slab, then form up the slab and pour another 4" slab right on top of the old slab. no ned to pin it or anything to connect it to the old slab.

then after slab cures, jack it up and lower it back down into place and you are done.

outside the cost of concrete and lumber its not expensive to do at all, but if you pay someone to do it for you they will charge quite a bit to do it

2 temp floor joists across each end, 12" off floor, a pad underside of each end of joists and 1 to 4 cheap Harbor Freight 1/2 ton jacks. Lift, block and add chain wall of cinder blocks. <$200. additional, fill in joists and wooden floor. <$500. Waterproofing may be a challenge.

That would work if it was just a slab but I have 4 walls and roof attached to the slab. I would need to sever the walls from the slab and lift them then pour more concrete.

Don't think that's feasible.

What wead said about foam might work for you. The link below explains how to do it
Raise slab with spray foam