Its a buyers market. Buying new or resale has its own pros & cons. If you are buying an resale. please ensure that you get a complete structure survey done. visit & talk to the neigbouring property owners.
I am sure that you will use a lawyer. Try & select a lawyer from a different town so that you can minimise the possibilty that the lawyer do not have a conflict of interest or is the sellers pocket.
Let, your mind rule & not your heart anything you are not fully satisfied just walk away.