Environmental issues: -Old HVAC appears to have asbestos insulation in the basement.

For example historical / environmental departments need to approve specific issues with property or building.

You will most probably need to have a Phase I Environmental Assessment performed {unless the owner has one that is recent, s/he is willing to share} both as a lender requirement and for your own peace of mind.

Find a good full-service environmental consulting company, not a home inspector or guy who only does mold and  have them collect non-viable air samples.  

I would also ask for a copy of the environmental report or property condition report which I would assume were done before the rehab. 

UCC liens, financing issues, entity structure, business valuation, property valuation, environmental studies.I have been involved in the brokerage of many gas stations.

Completion of satisfactory physical and environmental inspections of the Property.

I wonder how he can monitor and enforce this, though, since I encounter evidence of unauthorized cats.An environmentally conscience tenant could have lower utility bills and wear & tear on the property.It is interesting how far people will go to push their values.  

I would also like to add that I am also about ready to invest in some large 100,000sf greenhouses in Colorado that will be leased long term to growers seeking to cultivate Marijuana under environmentally controlled conditions.

So that's another good reason to get involved : non-profits, charities, arts/culture scene, international service, environmental groups, start-ups with a vision that excites you.