4Where, by virtue of an agreement or of a determination of the court, the tenant is required to carry out initial repairs to the dwelling-house, failure by the tenant to carry out the repairs within a reasonable time in accordance with the agreement or determination shall be treated as a breach of the obligations of the tenancy for the purposes of paragraph (a) of the First Schedule to the Act of 1933 (which relates to recovery of possession where the rent has not been paid or any other obligation of the tenancy has not been performed).