The general rule is that neither party to a lease is required to make repairs, but the tenant is required to surrender the premises at the expiration of the term in as good a condition as they were in at the commencement of the lease, reasonable wear and tear and damage by the elements excepted. Occasionally the lease provides that the landlord shall make certain repairs only. There is no legal requirement that the landlord make the ordinary repairs for the up-keep of the property except that the building must be kept tenantable. If a building becomes untenantable the tenant may remove on the ground that he has been constructively evicted. Destruction of the building usually terminates the lease, neither party being obliged to rebuild, unless the lease provides otherwise.