Each dwelling unit shall be occupied by at least one resident at least 55 years of age, and no occupant shall be less than 19 years of age. Prior to any final approval of the special permit use, appropriate documentation, including, without limitation, bylaws, covenants, declarations and similar documents, must be approved by the Planning Board and the Municipal Attorney to ensure that these age restrictions are followed and that all of the Town's expenses of enforcement, including reasonable attorneys' fees, shall be paid in full by the owner of the land and, in addition to all other available remedies, such expenses may become a lien against the real property and may be collected in the same manner as other Town taxes.