I believe that the majority of their business is in SFR because that's what the world mostly consists of.

I have 20+ sF D, C and B propertiesI own several of these properties in my name, some in a LLC , some that I purchased with credit card debt and some that I own free and clear with no associated debt. 

@Len Roche my first loan was with Wells Fargo (back in 2009) then I talked to my brother-in-law about a loan he had on his investment property with American Airlines Credit Union.

There were a litany of major repairs needed (structural work, mold infestation, an unusable garage that needed full replacement, broken a/c, big hole in roof, etc. etc. etc.).  

Are the majority of your deals from mailers or MLS? 

A personal guarantee of the retirement account owner for debt taken on by the account is an "extension of credit" and is a prohibited transaction.Real estate debt financing within an IRA will result in UDFI, which will be taxable income to the IRA.

@julius dixon (HELOC) Home Equity Line of Credit.

Major appliances are still connected to ungrounded outlets, some switches and outlets do not work, a kitchen breaker for the middle unit gets tripped for no apparent reason.9.An electrician has also damaged exterior walls.

I can probably use about 60k of that as a HELOC (home equity line of credit).  

Small bank or credit union that is portfolio lender is your best bet.