Or any clues on the document that would allow me to spot any major problem, such as foundation, electrical, plumbing etc.?

I won't name that company, but I will highly recommend mylandtrustee above ^.One huge perk of Land Trusts and part of the reason we used them for the JV BRRRRs was that ownership percentages could be changed through the project by reaching out to the trustee and doing some straightforward documentation.  

When a seller refuses to pay the commission, then the investors MAY agree to pay up to 3%.I understand that the NAR requirements stipulate at least two forms or documents disclosing buyer agent compensation to both parties.I’m just concerned that we might be in a pickle in this process.

They will know setback rules, road widths required, easement documentation for road and utilities, postal box and bus stop.  

There's plenty of regulation surrounding the STR industry, but it's perfectly legal and welcome here.

ParcelNbr=2767600595 In the end I am going to find and work with legal counsel on this.

I have bought a few houses after reading the foreclosure notices in the legal section of the newspaper but mostly I find opportunities by just talking to people.

Looks like previous registrations were entered incorrectly and preferential rents were listed as legal rents.

Did you witness the noise violations yourself, or did your tenants provide documentation?

Quote from @Anthony Britto: Quote from @Jonathan Greene: You will need egress windows to legally have a bedroom down there.