According to the Planning Board, the intent of the RM-2 Zone is to create, maintain, and enhance residential areas characterized by a mix of single family homes, duplexes, townhouses, small multi-unit buildings, and neighborhood businesses where appropriate.I'm assuming by definition I am zoned to convert to a triplex?

yes, its a people business.

I'm a retired engineer and have been successfully using income from these houses to support my retirement without dipping into retirement savings.I'm transitioning my business from rentals to a franchise and would consider selling one of my houses (5 br/4 ba - the other houses my son while he's still attending).

RE is really a small business and the number 1 reason that small business's fail is lack of proper capitalization..

She also mentioned that they’ve been in real estate since 2006 and have managed over 30 properties (though this is more of a side business for them), which suggests a mom-and-pop operation.

Make sure you do business with people you have vetted and are confident they will get the job done. 

The program has been great for my own STR investments and my co-hosting business.

I would like to learn the business.

this is basically the business credit coaching partner that works with you over the course of 12 mos. to help you build up business credit for your company. 

My motto, "Honesty, Integrity, and Accountability," has always been my guiding principle—not just in business, but in my personal life as well.