Need some advice on my house.

Measure the windows; looking for level sills, plumb sides, and equidistant diagonals. If they pass;
Move to where the walls meet the main house;
on the outside, look for buckled siding.
on the inside, look for cracked drywall joints.

I'm no engineer, but IMO, if there are no concrete friction piers under those wooden columns, somebody deserves a punch in the head. and
IMO, there should have been more than just those three skinny columns out there; and THEN!, is the deck out back attached to the Sunroom?
Ima thinking it's time to call a structural engineer, followed by someone who knows code.
But I'm just a lawnmower mechanic........... what the 'ell do I know.

BTW, what are all those lumps in the tree-branches, in the back?