(11) notice that there may be liens and other encumbrances on the mobile manufactured home and that the resident or purchaser should check with the town clerk, tax assessor and tax collector to determine whether any taxes are due on the mobile manufactured home and within any liens or encumbrances on the mobile manufactured home exist. Owners shall provide each prospective resident, before any rental agreement is entered into, and each resident, at the time of the first renewal of his rental agreement which occurs after the effective date of the regulations providing for a disclosure statement, with a completed disclosure statement. No rental agreement entered into on or after the effective date of the regulations providing for a disclosure statement shall be enforceable until the requirements of this subsection are met. A copy of such statement shall be signed by the resident at the time of the rental, acknowledging receipt of a completed, signed copy and such completed, signed copy shall be kept on file by the owner for a period of four years after such resident vacates the park.