Hartford, Conn., Mun. Code ch. 9, art. IV § 9-72

The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the context clearly indicates a different meaning:
Affordable housing means a rental housing unit for which the monthly contract rent does not exceed thirty (30) percent of sixty (60) percent of family income inclusive of all utilities as defined by HUD HOME program income limits.
Converted use means the conversion of any housing unit, whether occupied or vacant, from a residential to a nonresidential use.
Demolition means the destruction of any housing unit.
Housing unit has the meaning ascribed in section 18-3 of this Code.
Notice means a written notice unless otherwise specified.
Owner means any person, firm, partnership, association, joint venture, corporation or other entity who undertakes the demolition or change of use of any housing unit. The word "owner" also includes agent and any other person acting on the owner's behalf.
Rental unit means any housing unit that is occupied pursuant to a lawful rental agreement, oral or written.
Residential uses means the use of any housing unit designed, arranged, intended, occupied, maintained, leased or rented as the primary residence of any person.
Standard unit means any housing unit that meets the minimum standards of the City of Hartford's Housing, Building, Zoning, and Fire codes.
Tenant means any person who occupied a unit pursuant to a lawful lease or rental agreement with the owner, whether oral or written. For purposes of this article, two (2) or more persons who live together in a rental unit shall be considered one (1) tenant.