(i) communications, decisions, injunctions or agreements referred to in Part 5.1 or summaries; (a) an immovable, part of the building or a related group of buildings housing one or more rental units or common areas, If the tenant has terminated in accordance with section 51.2, the lessor must inform the lessee at least 45 days before the date of completion and inform the tenant of the date of availability of the rental unit and of a lease agreement beginning on that date of availability. (ii) exercises powers and duties under this Act, the lease or a service agreement; The minimum period of notice from a lessor, if there is a reason, is one month and comes into force on the last day of the following rental period (RTA, s 47 (2)). In practice, the full month requirement means that termination must be received the day before the rental, so that on 31 (1.1) A lessor may not change the lock or other means of access to a rental unit, except (a) to recount or modify the locks so that the keys or other means of access given to the previous tenant to the rented unit at the apartment and (f) the past or future rent is reduced by an amount corresponding to a depreciation of a lease; A tenant may terminate a lease prematurely if he or she believes that the lessor has not complied with an essential provision of the lease, whether he has a fixed-term lease or a monthly lease. The tenant must first write to the landlord describing the problem in which he declares that it is a violation of an essential provision of the rental agreement, ask the lessor to resolve the problem and declare that he will terminate the rental agreement prematurely if the problem is not solved by a reasonable period of time [indicated in the letter]. The tenant must give the landlord a chance to solve the problem. If the landlord does not resolve the issue in a timely manner, the tenant can terminate the lease by writing the landlord a second letter indicating that they are ending the lease. The tenant cannot end the tenancy until the landlord has received the second letter. 51.3 (1) If, subject to subsection (2) of this Division, a tenant has made a termination in accordance with subsection (1) of subsection 51.2, the lessor shall pay the lessee an amount equal to 12 times the monthly rent payable after the previous lease agreement if the lessor 51.2 (2) fails to comply. . . .