@Nicholas Baughman You won't know if they're squattors or owners or renters, and depending on whether they engage with you, you may not find out for a loooonngg time.I have no experience with buying occupied bldgs with non-cooperative tenants, but I know enough of the details in our area to know it's a specialty you'll need to be good at or hire someone who is. 

Are there any good resources you would recommend that give broad overviews of the markets and then some that provide more detail?

Just to throw out some more details to see if you have any thoughts...So I'm not a realtor and won't be on the "transaction side of the sale of the relinquished property".

Details: Built 1947, ARV 210K, 1050 Sqft.I know it's best to get a contractor to get an exact estimate.

The plan does not have to be extremely detailed, but you should give yourself an outline. 

Voucher payments start with bed count, and then are based off comps and features. 

I have agents, title companies and escrow, now I am looking for a General contractor who can assist me in the finer details of the remodel. 

I also tried a few of the online banks mentioned above as well - none worked.It can be done- but there are a few hoops to jump through and costs a bit.I use a US-Israeli accountant (offices in both countries) who can facilitate this- PM me if relevant and I am happy to give you his contact details.

I do have the rental income of all the properties but the valuation he provided didnt provide me with any details with how he got the price per square foot that he used.Is there something i'm missing?

@Andrew JamesBorrowing from a solo 401k plan is one of the many features of a solo 401k plan.