I am not sure that jacking up the rent in this scenario would have produced a better outcome.

Most underwriters permit this without question and without further documentation if the abstractor who conducted the search produces evidence of sufficient E&O coverage. 

He is allergic to cat dander and the house has so much inside, in the attic, in the yard, garage and underneath the house he got instant sinus problems and severe rashes on his entire body .

And it allows us to get to a resolution more quickly, saving me the cost of the case and the cost of having a property that isn't producing income.  

I don't have a specific resource in mind, but would suggest either finding another investor who has done this or speak with a lawyer who has experience in front of your local zoning board (or equivalent body).  

I know I would feel more comfortable making sure all rentals are producing along with having reserves before starting something new thank you. 

And if so, what would be the best communities to consider (I saw some duplexes in the Lowell, Haverhill and Nassau area that looked like they might produce better numbers)? 

But the 1031 would be into a passive vehicle designed to be out of sight out of mind and simply produce cash flow. 

The greener areas mean that the area has more cities that produce average rent to price ratios that are in the top half of cities for that metric. 

In a couple of years I plan to trade all of my single family homes for larger multifamily because we all know that multifamily is much easier to run and also produces more Cashflow.