Subject to this section, the home amenity rental tax rate is the rate that the county sets by resolution. The home amenity rental tax rate may not exceed: except as otherwise provided in this section, 1.5% in a code county; 5% in Cecil County; 2% in Talbot County; 5% in Calvert County, Carroll County, Charles County, Dorchester County, Frederick County, St. Mary’s County, and Somerset County; 3% in Wicomico County; and 4% in Garrett County. With the unanimous consent of the county commissioners: a code county other than a Western Maryland code county may set a home amenity rental tax rate up to 2.5%; and a Western Maryland code county may set a home amenity rental tax rate up to 4%. The home amenity rental tax rate in Washington County is 3%.