"Mini self-storage" means a building or portion thereof segregated into small storage cubicles used exclusively for the dead storage of excess property. Such term shall not include the conduct of business activities other than rental of storage units of the premises nor outside storage of property. Cubicle rental documents shall be required and shall set forth use restrictions imposed by governmental laws and ordinances. (Added by Amended Ord. 02-064, Dec. 9, 2002, Eff date Feb. 1, 2003).