Finding out if unique property is up to code.

[Frank Macias]

Hello BP members! I am looking at a unique property in Naples, FL that I want to know if it is up to code. This particular property has 2 single family homes (4/2 and a 2/2) and two efficiencies in the back of the property. Since all units are located on the same land and considered one property how can I verify these dwellings are up to code and won’t require costly modifications after purchase? Any help would be great. Thanks in advance.