40. Whenever a house, without the act or fault of the lessee or of a person for whom he is responsible, suffers any deterioration which seriously reduces its rental value, or whenever the lessor reduces its space, services, or conveniences, the lessee, failing agreement with the lessor, may apply to the local administrator for cancellation of the lease or a reduction of rent and the administrator shall have power to grant him such reduction if he deems it equitable.
If the administrator has granted a reduction of rent, the lessor, from the moment he has remedied the defect, shall be entitled to re-establish the rent for the future.
1950-51, c. 20, s. 26; 1960-61, c. 94, s. 3; 1974, c. 76, s. 14.