I'm buying a duplex in a great rental area.

This past Summer, I did a seller financed deal on a Duplex for $135,000.

It is in a neighborhood of single family and duplexes.

For example, he has a lead on an off market duplex that we want to get.

@Eddie SorrellIf those market rent #'s are correct, I would clearly explain this to them, and then recommend that you offer to do some minor upgrades to the units for those existing tenants.Put up a fresh coat of paint on the walls, pay for carpet cleaning (if there are carpets), do minimal upgrades to the lighting fixtures, and maybe even throwing in some USB outlets -all relatively inexpensive upgrades to your units that will help force appreciate the rent, even if they decide not to stay. 

I have a background in construction, I'm not a GC but I work for a large commercial GC at my day job and feel that this may give me potential leg up in this niche/ stratgey.The half-baked idea I have now is to build a container house duplex and live in it and rent out the other half.

I have a duplex in downtown Asheville, NC that I have owned for 10 years and recently finished rehabbing the upstairs part of it and have it for rent.

I am looking at a bank owned duplex which shows great numbers.

I bought a duplex last year in Chattanooga off of the local MLS for 58K and spent about 26K doing a rehab on the property. 

Should be no more than 43% for FHA. 36% for Conventional.And, you have to have the down payment, closing costs, and reserves.Since you're looking at a duplex using FHA.