[DrScump]

If a home warranty (appliances, plumbing, electrical, etc.) was thrown in, test everything right away (including A/C in winter and heat in summer).

Also (perhaps USA only): go to City Hall and pull all building permits and plans for the property. If there was work done without appropriate permits, the seller or warrantor should make you whole on that.

Also, if you find a strongbox hidden under the floorboards of the den, that's mine -- I forgot it.