Tear down or salvage house

[Mike Barnish]

Good afternoon all,

Does anyone know what kind of inspector do I use to inspect a house to see if I should be kept for rehab or tear down. House built in 72 had a hoarder in there,  surface mold on walls, 5ft hole in roof  can see daylight from 1 st floor floor spongy in that area of course. Any input? Want to get professional evaluation before I dump money in. Thank you for any responses.