4-5-503: VIOLATIONS OF OBLIGATIONS:
A landlord may bring an action to recover the possession of an apartment unit if the tenant has violated an obligation or covenant of the tenancy, including, but not limited to, any obligation in a written apartment rental agreement, other than the obligation to render possession upon proper notice, and has failed to cure such violation after having received written notice thereof from the landlord. (1962 Code § 11-5.03)