@Melvin Galloway - based on your essay above, take the money and move on to the next project. $300k is a lot and it will enable you to tackle the next large project.

I want to say the admission is $20 per person but it would be well worth it.

I'll keep this short and brief as I could write an essay on this.

I have written a very detailed "essay and business plan" about where I am and where I am going.   

Even if it was, by your own admission, they didn't even fulfill the terms of the e-mail.

@Michael Goldsmith  To be clear, I'm offering hard facts, not rhetoric.My point is simply to say that Zillow's numbers - by their own admission - are so inaccurate as to be useless for decision making. 

From a legal standpoint, jurisdictions vary widely in their laws - search for the thread about NJ and audio/video cameras last month for a taste - so I won't get into the weeds whether the OP is in a "one party" or "two party" state with regards to surveillance.By her own admission, the OP is already suffering the fallout from the other tenant from her overstepping bounds and making them uncomfortable in their own home. 

But whatever... if that's the price of admission to allow me to build a new home in Somerville where I couldn't before then so be it. 

By your own admission they gave proper notice and paid through the end of the lease. 

Thank you to your advice, I just want to let you know that I have this skill on writing Problem-Solving Essay.