If an owner fails to pay the registration fee imposed by this subtitle within 30 days of the date on which it is due, the owner is liable for the following, in addition to the registration fee:interest at the rate of 1% for each month or fraction of a month that the registration fee is overdue; and a late fee at the rate of 1% for each month or fraction of a month that the registration fee is overdue. The interest and late fee imposed by this section are in addition to any other penalties authorized by law. All registration fees, interest, and late fees provided for in this section are a personal debt owed by the owner of the vacant lot. These fees and interest:are a lien in favor of the Mayor and City Council of Baltimore on the vacant lot; and may be collected or enforced the same as any other debts or liens due to or in favor of the Mayor and City Council of Baltimore. City Code, 1976/83, art. 13, §58(g) Ord. 82-642 Ord. 04-832