Md. Code, Land Use § 9–807

(a) If the county commissioners abate a violation of a zoning law, the county commissioners may assess against the property the reasonable costs of the abatement.

(b) The assessment shall be:

(1) added to the annual tax bill of the property to be collected in the same manner as ordinary taxes are collected; and

(2) subject to the same interest and penalty for nonpayment as provided by law for the nonpayment of county taxes.

(c) The assessment is a lien against the property from the date of assessment until paid.