A good builder will have some solid plans to choose from that your property management company can review and maybe tweak.   

Review their online financials/annual statements.

@Sham Haile you should look up the Tenants Union & RHAWA websites to review the notices and requirements for how notices need to be provided to tenants when a seller intends to sell a property. 

My message back to the realtor:After reviewing the inspection report, here are my thoughts.

We found this deal reviewing Loopnet and saw it had been sitting on the market.

One would need to be a serious sucker to value some Airbnb 5 star reviews and some sheds in the backyard at $200k+.Not necessarily. 

After about 2 weeks I took off the pet restriction because I read other reviews that highly encouraged it.

Agent-advisors would merely provide advice, coordinate property photos, and review offers with their principals. 

Developments completed, actual historical NOI for other rentals they manage (read expedia, booking and airbnb reviews), have they finished other developments on schedule?

I wouldn't worry too much about it, if you have a competent CPA or bookkeeper they should be able to review your books and within minutes have a strong grasp on who gets a 1099 (spoiler alert, not every contractor gets one, I'll be annoyed if I get one since I'm structured as an S corporation) and the amounts to report.1099 filings are usually a loss leader for us, so if you're working with a professional make sure you take advantage of them filing everything for you.