Legal Question in Real Estate Law in Massachusetts

Re: Buying a 2 family home that has tenants

Yes.

If I understood your question, there's a court order that permits a tenant to stay until a certain date, and the owner has meanwhile decided to sell the property before that date is reached.

Are you the buyer or the tenant? Or the seller?

Anyway, in a word, the court's order would normally be "binding upon" any new owners of the property. Another way to put it is that the sale of the property gives all those rights in the property that the seller has, and if the seller doesn't have the right to evict someone or end their tenancy, the buyer won't either.

Is / are there any security deposit(s) involved? Any of the three parties would benefit by learing the laws governing security deposits through the transfer of ownership.

Good luck.