Anyone can break any contract - IF the two parties agree in writing (in this state of MA), and it may cost you - assuming you're the landlord. Everything has a price which is where the "cash for keys" offer, mentioned by Tom, may come in handy. If, as Chris mentions, there is already a provision in the existing lease, you would need to abide by what has been written. Otherwise, the two parties may come to a new agreement, and set that down in writing accordingly. If your question is just in general terms where a new owner (after Closing) just wants a tenant out, but the tenant has a written lease, and has not broken that lease already, then, as Kevin states, the short answer is "no." Any new owner (again, after Closing) would be wise to ask for copies of leases directly from the tenant, and copies of rent rolls and security deposit from the previous landlord. Tenants may also have copies of canceled checks, so that is also helpful. If neither the tenants nor the previous landlord cannot produce anything in writing, then the question of whether there is a valid lease in place is raised. Again, if you're a potential landlord, and depending on how good a deal is, it would be better to ask for these items prior to purchasing and Closing on the property. But, if the deal is an absolute steal, and is just too good to pass up, then it would be wise to keep some liquid cash available to persuade someone to leave sooner rather than later, or get ready to pay an attorney a retainer for the possible eviction process. It all depends on the two parties involved, and whether they are willing to put their new agreement in writing - even if that includes moving out. It is wise to check with your attorney on these matters because even one small detail can change things. So, if this was a general question because you're thinking of becoming a landlord, there are many good books out there, and some are even specific enough to discuss the laws of the state you're in. Further, you can also brush up on landlord and tenant's rights by conducting good research in your state and using your state's resources. If, however, you're a tenant who cannot come to an agreement with the new landlord, the same generally applies. Look up Tenant's Rights in your state, but if you have nothing in writing, and especially if you're not paying your rent or have broken your lease in any way, then it would be wise to make plans to move - because move, you will, one way or the other. Good Luck!