Requiring crazy things, like architectural drawings and permits for simple things like this.  

We paid exactly according to the contract—and even paid an extra $5,000 just to try to get them moving—but all we got were more delays and more demands for money.

So I reached out to him and he was glad to help.After some discussions, he offered that he is willing to do the renovation all on cost, and that me and him would determine the extra fee to him for his job.

Did he get permits?

I doubt that every single little repair ever made like replacing the faucets, etc. needs to be disclosed, I imagine this is limited to material repairs like major plumbing issues, structural issues, major modifications without a permit etc. 

That decision in 2015 even led to me getting my license out here so I could help more people who wanted to invest here.One thing to keep in mind is that you actually have to have a designated on island point of contact / reachable person- which is required to designate on the permit application.  

The goal is reliable performance, not premium finishes that tenants don’t pay extra for.This rehab philosophy is simple:Durable.

Check for:•Proof of insurance and licenses•At least three references (and actually call them)•Active permits pulled under their name in your county2.

This Thanksgiving is EXTRA special!

IDK what a "validated seller" means but I'll read between the lines and assume its some 85+ year old dude that built 1 or both of the buildings, likely didn't pull permits, and likely has code issues to resell as a true residential property never mind to your comment the changing in area and zoning.If you were going to take it on you'd want to understand the current zoning, current residential terms (is there a lease in the homes?)