In this section, “dwelling” means: a newly constructed or substantially rehabilitated single dwelling unit that is unsold or unrented; or newly constructed or substantially rehabilitated commercial property that is unsold or unrented. “Dwelling” does not include land. A property tax credit granted under this section applies only to county or municipal corporation property tax. This section does not apply to Baltimore City. If the owner of a dwelling applies to the county or the municipal corporation where the dwelling is located for a property tax credit under this section, the appropriate governing body may grant, by law, a property tax credit not exceeding 100% of the county or municipal corporation property tax imposed on the dwelling. The appropriate governing body may: determine the amount of the eligibility requirements for this credit; and provide for procedures necessary to apply for a property tax credit under this section. When the owner of a dwelling applies to the appropriate governing body for a property tax credit under this section, the owner shall certify that the dwelling is unsold and unrented. A recipient of a property tax credit under this section shall send immediately on or before the date of occupancy to the appropriate governing body a notice that the dwelling has been sold, rented, or occupied. A property tax credit granted under this section is available: as long as the dwelling remains unsold or unrented; and over a continuous period of time not exceeding 1 year. If a recipient of a property tax credit under this section fails to comply with the provisions of this section, the property tax credit under this section is forfeited immediately. This section does not change regular assessment procedures.