Bert A. ICelsey, the lessee under a written lease, let the entire premises to the defendant for the remainder of his term, reserving the right to re-enter on breach of any of the covenants “and repossess the same as of the Lessor’s former estate,” and then assigned all his interest in the lease to the plaintiff. The lease to the defendant was an underlease and not an assignment. Before the assignment to the plaintiff, Kelsey had a substantial interest in the premises underlet to the defendant; he had the right to use and enjoy the premises let to the defendant for the remainder of the term, upon a surrender or forfeiture of the sublease for any breach of covenant; and this interest passed to the plaintiff by Kelsey’s assignment. Patten v. Deshon, 1 Gray, 325. McNeil v. Kendall, 128 Mass. 245. Dunlap v. Bullard, 131 Mass. 161. Collins v. Hasbrouck, 56 N. Y. 157. Doe v. Bateman, 2 B. & Ald. 168.
It is admitted by the defendant, or not denied, that it leased the adjoining premises and thereby acquired the occupancy of the stores situated on the ground floors of both buildings. These stores were separated from each other by a partition wall, which was the dividing wall between the two buildings. With the written consent of the owner of both buildings, but against the protest of the plaintiff and in defiance of a notification of the plaintiff that under no circumstance could said wall be broken or any portion thereof removed, the defendant cut an opening eight to ten feet in length in the partition wall for the purpose of connecting both stores. The suit was heard before a judge of the Superior Court who filed a memorandum in these words: “The owner of the two buildings having given permission, in writing, to cut the hole in the wall between the two buildings, this bill is dismissed with costs.”
The plaintiff, as assignee of the lease which Kelsey had given to the defendant, acquired a property interest in the leased premises which enabled bim to maintain an action at law to recover damages for injury to that interest or a -suit in equity to restrain the doing of acts which amount to waste, which, as defined in Delano v. Smith, 206 Mass. 365, 370, “is an unreasonable or improper use, abuse, mismanagement or omission of duty touching real estate by one rightfully in possession which results in its substantial injury. It is the violation of an obligation to treat the premises in *560such manner that no harm be done to them and that the estate mayrevert to those having an underlying interest undeteriorated by any wilful or negligent act.” • “The test in such a case is not alone whether a material injury is done to the building, but whether it is altered in a material manner, and to an extent beyond what is fairly implied from the terms of the original contract of letting.” Klie v. Von Broock, 11 Dick. 18, 29. Tried by this rule, the owner of the premises by his assent could confer no right upon the defendant without the permission of the plaintiff to violate the obligations which it assumed by its covenant “to keep the said leased premises in such repair, order and condition as the same are in at the commencement of the said term” and “not to make or permit to be made any alteration or addition to the said leased premises, nor permit any hole to be made or drilled in the stone or brickwork of the said building, . . . except such and in such place and manner as shall have been first approved in writing by the Lessor.”
It follows that the decree dismissing the bill must be reversed with costs; and it is
So ordered.