Also, I have been a mortgage underwriter for ages so am more than happy to help anyone answer any questions in that department. 

If you have time go to the Department of Zoning in Arlington and just ask.

The only option for this park was to put in new leach fields, and I was sure if the heath department visited the park, they would shut it down on the spot. 

I guess I would go down to the town permits department and request to see any permits for the property in question? 

As for the water department, call them and do the same thing.

This is what our city zoning department says:M-1 Industrial Light.The purpose of the M-1 district is to establish areas of the county to provide for certain types of business and industrial uses characterized by light manufacturing, fabrication, warehousing and wholesale distribution, which are relatively free from offensive activities and which, with proper performance standards, will not detract from residential desirability of adjacent properties.

BEFORE YOU BUY:  E-mail  the City's buildings department and ask them how it would handle the situation.

Banks commercial departments do not generally want single family homes in their commercial portfolio.

Just try to call the real estate department without the bank and see if they can give you information.

I was finally able to speak with someone at the zoning department about this property.