It could be an error, a law firm trolling for foreclosure defense clients. 

I would assume that with grounded wires upstairs there has been electrical work in the past few decades.The old windows and the old wavy glass is actually worth money and desirable. 

It's always important to make sure you're not over leveraged in any one investment property and to have a firm grasp on the property's I&E.

I think NH is a great market and only becoming more desirable after the pandemic. 

Desirable Neighborhood Low crime rate areas. looking for 10% COC

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My desire was to refinance out of the FHA loan into a conventional primary loan and then move on to the next property using the FHA loan again but was advised by a 3rd party that it might be hard to get another property if I list my current one as my primary residence.

Your desired path sounds similar to mine.

not useful to generalize.2. are strs csusing problems in resort towns & desirable vacation areas? 

Also if you are considering opening up your commute to being within 2 hours of NYC there are many options out there for you not only in terms of great cashflow, but you can also purchase a property with multiple houses on the lot in more rural areas that will give you the cashflow asset you desire and some of the privacy and features of a single family home that it sounds like you both want.