There are freelancers that do work for engineers & architects who are already familiar with their work and can review and stamp for a fee as well.  

These are key reviews for you and your team to review prior to out price confirmation. 

Quote from @Tod DuBois: Another Furnished Finder POT cancelled on me after I went out of my way and paid to review them on Key Check and signed up for Key Check contracts, made two contracts, allowed a pet and still, two days before the check-in, they did not sign.

Affordable / section 8 rentals look great on paper but it's one thing to review the numbers and another to actually own a portfolio of them for years and years.

If possible, in the future I would try to obtain a copy of a standard Condo questionnaire from the HOA prior to the mortgage application process and ask your lender to review it in advance in order to mitigate some of the time and costs risks associated.

They can review the restriction and let you know if there’s a straightforward path or if it’s going to be an uphill battle.

However, the best way to get a feel for rental rates compared to values is to review/underwrite properties in the area - only after reviewing/underwriting many will you begin to see a pattern.

We send our clients  a comprehensive list of what we see COULD be fixed, as we have no idea how each owner will want to maintain their property(s). 

You can easily look them up on https://nmlsconsumeraccess.org/If they are a commercial lender, you may want to check for google reviews

I really only hear mixed reviews, but can't say one way or another personally.