Such assessments shall be entered in a book kept by the city or town clerk, to be entitled "assessment liens," stating the names of the owners, the location of the property and the amount of the assessment and the time or times of payment. When so entered such assessments shall constitute and be a lien upon the property so assessed and payment thereof may be enforced as the payment of city or town taxes is enforced. Such lien shall continue from the date of entry on such book until the expiration of five years from the date when final payment is due and payable, unless sooner paid. Upon default in the payment of any installment or deferred portion of any assessment, at the time and in accordance with the terms and conditions fixed by ordinance, the total amount of any such assessment then unpaid, including deferred installments or payments and interest, shall immediately become due and collectible as city or town taxes are collected and with such penalties and costs as are now provided for the payment of such taxes.