What are the must ask questions to come up with an accurate asking price?

[Reinier Napoles]

Greetings, 

Hope all is well.

I am a new RE investor. An opportunity has came about. A friend is moving away and is interested in entertaining my offer price.

I quickly set up an appointment to go see the house this coming day and I would like to be educated on the key questions that I need to ask him in order be well informed of the most critical aspects of the house to finally come to an offer price. 

Hope this message finds you all well. 

Blessings,