Assessments shall be due and payable, without interest and without demand, within thirty (30) days after the effective date of the assessment ordinance. If the assessment ordinance so provides, the assessments may, at the election of the property owner, be paid in installments, with interest. If installment payments are so provided for, failure to pay the whole assessment within said period of thirty (30) days shall be conclusively considered and held an election on the part of all persons interested, whether under disability or otherwise, to pay in installments shall be conclusively considered and held as consenting to the improvements, and such election shall be conclusively considered and held as a waiver of any and all rights to question the power or jurisdiction of the town to construct or otherwise acquire the improvements, the quality of work, the regularity or sufficiency of the proceedings or the validity or correctness of the assessment. The owner of any piece of property may at any time pay the whole unpaid principal with the interest accrued to the next interest payment date or as provided in the assessment ordinance, together with penalties, if any. Subject to the foregoing provisions, all installments both of principal and interest shall be payable at such times as may be determined in and by the assessment ordinance. Interest shall commence to accrue from such date specified in the assessment ordinance and may be paid in advance or in arrears as specified in the assessment ordinance. (Ord. 9, Series 1988)