I work professionally as an environmental consultant in the City of SD so I'm often helping others through the (onerous) process of getting a site development permit.

Now, if there were legal issues, title matters, something more unique about the property such as an environmental issue and the agent or investor solved that problem outside the general scope of facilitating a transaction, then there is a value added as solving such issues would be incurred by another professional, an attorney, engineer, title company.Need some economics to understand the underlying justifications of "value" as well as laws of equity need to be applied.

Use the Appraisers GIS maps or BOCC maps to find environmentally sensitive or species designated areas. 

Think environmental;)

Most banks/CU's are reticent to lend outside of their "footprint."

However, because the loans are commercial, the due diligence process is much longer and intensive than on a Single Family Property, requiring an appraisal, environmental study, property condition and some other case-by-case reports like Lead Based Paint, Asbestos and Radon.

Environmental Protection Agency, U.S.

Phase I environmentals will be required, sometimes Phase II, and the engineering and inspection reports are big bucks.

Open the windows and call the Bio-Squad, you probably have an environmental clean up business in the area, they clean up any mess and will deal with odors as well as any bio hazard.

Tomorrow is our Waltham, Massachusetts event, and is free and open to all: Are there Opportunities in Environmental Hazards?