representing a buyer purchasing his first four family

[Rich Hupper]

Hello fellow agents.

I am representing a buyer buying his first investment property. The property is a 4 unit building. 3 of the 4 units are subsidized. The owner has owned the property for 6 years and has lived there for 1 of those 6 years. He has had it professionally managed for most of this time by a management company. My buyer does not want the property delivered vacant. He does want a home inspection contingency and a mortgage contingency. 

What documents should I be looking for from the seller or listing agent to review. Also does the contract with the management company end upon new ownership? 

Is there any particular language I should incorporate into the agreement to make the offer subject to something else. 

What should I be asking the seller to produce during the due diligence period?

Thank you