Every landlord of housing accommodations subject to this Subchapter, which are rented to a tenant on the local effective date, shall within 30 days after the local effective date give notice in writing by certified mail to the tenant of each such housing accommodation on a form provided by the division for that purpose, reciting the initial legal regulated rent for the housing accommodation and the tenant's right to file an application for adjustment of the initial legal regulated rent within 90 days after receipt of the notice. Notwithstanding the foregoing, nothing in this section shall require an owner to serve the above notice after four years from the date of the commencement of the initial stabilized tenancy or maintain or produce any records relating to rentals of such accommodations for more than four years prior to the date the most recent registration was required to have been filed pursuant to Part 2509 of this Title.