Property tax records / foreclosure notice may have mailing address of owner or pay for a skip trace.you can buy it at auction or if you get a hold of the owner (and if there is enough time) attempt to cure the default in a subject-to purchase. 

Besides the fact that it’s mortgage fraud, what happens if other units sell low or foreclose right around the time you are attempting your refi?

Seller financing can be wonderful but count your fingers.Something I always do when researching a property is simply key the address into a browser and sit back and read.

I would simply present it as i want to buy all 5, here are 5 contracts.

It's hard to tell from the language if this is a requirement (to minimize absentee out of state landlord issues) or simply to state who might be working on behalf of the out of state landlord as more of a safety precaution/heads up (e.g.

Does this simply mean including rehab costs in the initial loan?

It is simply Subject To or Sub 2 as some put it.

They were simply selling and using all of their techniques. 

I simply have no experience here.Has anyone had a similar experience who can advise on how you handled it?

Can I simply draft up something that states "this terminates the lease I signed on such and such a date."