As used in this article, the following terms shall have the meanings indicated:
A tenant, as defined in this chapter, who cannot occupy the premises that the tenant is entitled to occupy due to the landlord's failure to adhere to any applicable provision, statute, rule or regulation relating to the rental unit, including but not limited to the New York State Uniform Fire Prevention and Building Code, and Chapters 210 and 325 of the Ithaca City Code. For the purposes of this chapter, a tenant's entitlement to occupy is any nongratuitous agreement with a landlord to occupy premises, regardless of whether the agreement violates a code, statute or regulation.