Exemptions. The requirements and limits of Section 13-145 do not apply to: a newly constructed unit whose construction was completed on or after January 1, 2000; a unit in a licensed facility, the primary purpose of which is the diagnosis, cure, mitigation, and treatment of illnesses; a unit in a facility owned or leased by an organization exempt from federal income taxes under Section 501(c)(3) of the Internal Revenue Code if the primary purpose of the organization is to provide temporary shelter for qualified clients; an owner-occupied group house; a religious facility, including a church, synagogue, parsonage, rectory, convent, and parish home; a hotel or motel only serving transient residents; a school dormitory; a licensed assisted living facility or nursing home; a building originally designed and constructed to contain only 2 dwelling units, one of which the owner currently occupies as a principal residence (domicile); an accessory dwelling unit; a unit subject to a regulatory agreement with a governmental agency or an agreement with a third-party entity that restricts occupancy of the unit to low and moderate income tenants; Subject to rent stabilization regulations adopted by the Director, a unit located within a substantially renovated building if: the substantial renovation was or is completed on or after January 1, 2000; and the building is not in violation of Subtitles 4 or 13; a rental unit owned by a landlord who: owns 5 or fewer rental units within the County; and is either: a natural person or the living trust of a natural person; or the trust or estate of a decedent; a condominium unit owned by one or more individuals domiciled in Prince George's County; and any unit within or a part of a building cooperative. Expiration of exemption. An exemption under Subsection (a), above, expires when the conditions entitling the unit or facility to an exemption cease or no longer exist.