Repair or replace your concrete footings
If one or two posts have sunk on a deck that's otherwise sound, we can usually shore up that corner, dig out the bad footings and pour new ones without pulling the deck apart. When most of them are shallow or crumbling, I'd replace the whole set, because chasing them one at a time costs more over a few years. If it's the house itself that's settling, that's a foundation raising job instead.

