Plumber who fixed the leak says very possible the leak happened prior to the inspection, based on the condition of the floor and the rust on the pipe.Trying to figure out what next steps should be.

Other than a general home inspection, what are the other specialized inspections that I need to have?

If they tell you they would let it stay after a passed inspection, then possibly go for it.

Like I said though, most come in about half that (windows are usually already upgraded), so use $5k to negotiate and even if you get a 50% concession you could still potentially get it all paid for by the seller.I can run any addresses through the database for you and see if they've been inspected or deleaded.

On top of changing rules regularly, and threatening fines for rules that were changed the next week, they never did the initial inspection with the builder. 

I think your probably right but yes an inspection is a must!

The buyer declined an inspection and signed the purchase agreement.

Like I said though, most come in about half that, so use $5k to negotiate and even if you get a 50% concession you could still potentially get it all paid for my the seller.I can run any addresses through the database for you and see if they've been inspected or deleaded for you.

Robin, contact the City of Syracuse Codes office and request an inspection for the certificate of occupancy and let the building fail and then request the city place a condemned or similar notice. 

This does not include the inspection cost I did prior to closing.