Garage facilities, parking facilities, driveways, storage spaces, laundry rooms, decks, patios, or gardens on the same lot, or kitchen facilities or lobbies in single room occupancy (SRO) hotels, supplied in connection with the use or occupancy of a unit, may not be severed from the tenancy by the landlord without just cause as required by Section 37.9(a). Any severance, substantial reduction, or removal of a housing service, even if permitted under Section 37.9(a), shall be offset by a corresponding reduction in rent. Either a landlord or a tenant may file a petition with the Rent Board to determine the amount of the rent reduction. In addition, a tenant may petition the Rent Board for a determination on whether an Accessory Dwelling Unit proposed to be constructed under Planning Code Section 207.1 would sever, substantially reduce, or remove a housing service, pursuant to the procedures set forth in Section 207.1. The issuance of a permit for construction of an Accessory Dwelling Unit does not, in and of itself, constitute a just cause for the purpose of severing a housing service.