@Jeff CopelandYes, both properties sit on the same parcel.At the current condition the duplex is in, I dont think it would refinance for the amount needed to purchase it.

A little of both - as a seller awhile back my broker didn't present the TDS form until later in sale (some things going on in Brokers personal life at time to excuse it - but I had no idea of the form or my responsibility there) exposing me to additional risk. 

Below are the details:- Single family home, 3 bedroom 2 bath- 1464 square feet- $310,000 asking price- built in 2003- 20% down with an est. mortgage of $1,347The home is in great conditions and won't need any major repairs.

I don't know that I want to invite that type of karma into my life.

Under those conditions we waived inspection contingencies on the offer.

The classification of multifamily properties is not set in stone.Some people look at it by Construction Year exclusively, and others weigh in the Property Conditions, Ammenities, etc.Here is a very general classification by construction year:Class A: 0-15 years oldClass B: 16-29 years oldClass C: 30+ years oldClass D: 30+ years old in high crime areas.To answer your specific question about section8 being a Class B or A, I’d say it is not likely. 

Especially if it's in good condition and priced competitively (which it sounds like it is).

Also, if you are buying older, non-renovated multies you'll want to thoroughly assess things like current condition and needed work (since such a large % of inventory here is from early 1900s etc).

The fourplex that I am looking at does not have electrical conditioning system, but instead evaporative coolers on all 4 units.I have not experience with this cooling system.Is it possible to bring the temperature below 80F when the outside is above 110F?

The place looks like decent condition, except for an old carport and crumbling balcony.