How many years have you? I have been in these situations before...in guess what...the same state he lives in. In fact, I probably only live 5 miles from the OP. While MA is very geared toward protecting tenants, they do not make pursuing claims against landlords a walk in the park. This is not a simple case of "oh, I got my deposit in 31 days instead of 30, I am entitled to triple damages". This case is dependent on what is on his lease. If his lease says nothing about storage, then he will most likely need a lawyer to do something. At this point, hiring a lawyer would most likely be more costly than eating the damages.