It looks like they are there to reinforce the decking, but there are no joist hangers or cement footings (down to frost depth).For me...I would have a structural engineer come out and evaluate the footings of the buildings to ensure it's sound.Good luck in your search!

Other than that, not factoring in replacement costs, big ticket item expenses, and not having any reserves are some main ones that come up. 

How would I know the sewer or foundation isn’t rotting out below the building, or that there’s going to be a huge assessment to replace siding in the next few years?  

If the GC and contractors fall behind or aren't getting the work done, then they won't get paid and they will be replaced with a different crew.  

Here's a profile of a builder and civil engineer "Doctor Hemphouse" who has built 60 homes with hemp: https://www.hempbuildmag.com/h... 

We have replaced 7 AC units in the past 2 months in our portfolio - which is really extreme... but it's $35,000 in expenses we had to incur... so it deserves consideration regardless of what scale  you are at.You might think - well I can just refi it when rates come down.  

There were maybe a handful of us that were engineers that went to ask questions after the pitch.

Lots were sending non-engineers to the property and an engineer was signing off on the report.

In all of that time I've only had one situation that I would have kept any part of a security deposit for "damage" (to replace one new set of king-sized sheets.)

Ordering a full topographical survey of the property (which will be required for future development and application processes anyway) will give you the ability to show engineering/design groups what you have, and they can give thoughts and bids leading to a site plan.