As far as I'm aware, each new dwelling unit must meet present day code.

Here are some of the code rules I encountered: There was a common area between the two units (laundry and back door) - because of this both units had to have doors that were fire rated.

It starts with getting a plumber to find/map the lines, then figure out what the municipal code is (do they mandate fixing, etc).

This could be interpreted as negligent, inconsiderate, incompetent, but nothing is going to change until somebody gets a bill, or the threat of a bill, or the landlord gets a code violation, or the landlord stops getting paid. 

How do I find the code enforcement people?

The form of the notice depends on the type of sale... if the property is listed with a broker, offered privately, or through the auction method, the notice would have different content.Pull the City Code... this is not one for the internet.

I have been researching pre-foreclosure, divorce, tax delinquent, code violations, and probate filings as lists for sourcing deals.

I keep seeing pretty good deals in Milwaukee, WI area, zip codes 53216 and 53218.

Toledo has an administrative warrant in it’s municipal code. 

The inspection report came back, and there are a ton of deficiencies( roof in bad shape, pier and beam findings suggesting movement of the property, improper electrical fittings, gas lines not to code, etc).