MD · State directory
Maryland ADU rules
Official accessory dwelling unit regulations for 76 jurisdictions in Maryland, plus statewide law.
Statewide ADU law
Maryland has state-level ADU legislation that applies across local jurisdictions. Local rules below may add requirements on top of state law.
Cities
Aberdeen1 source · verified July 2026Annapolis1 source · verified July 2026Barclay1 source · verified July 2026Barnesville1 source · verified July 2026Bel Air2 sources · verified July 2026Berlin1 source · verified July 2026Boonsboro1 source · verified July 2026Bowie1 source · verified July 2026Brookeville1 source · verified July 2026Cambridge1 source · verified July 2026Cecilton1 source · verified July 2026Centreville1 source · verified July 2026Charlestown1 source · verified July 2026Chesapeake Beach1 source · verified July 2026Chesapeake City1 source · verified July 2026Chestertown1 source · verified July 2026Chevy Chase Village1 source · verified July 2026Church Hill1 source · verified July 2026Cumberland1 source · verified July 2026Denton1 source · verified July 2026Easton1 source · verified July 2026Elkton1 source · verified July 2026Federalsburg1 source · verified July 2026Frederick City1 source · verified July 2026Frostburg1 source · verified July 2026Funkstown1 source · verified July 2026Gaithersburg1 source · verified July 2026Garrett Park1 source · verified July 2026Goldsboro1 source · verified July 2026Greensboro1 source · verified July 2026Havre de Grace1 source · verified July 2026Highland Beach1 source · verified July 2026Hillsboro1 source · verified July 2026Hyattsville1 source · verified July 2026Indian Head1 source · verified July 2026La Plata1 source · verified July 2026Laurel1 source · verified July 2026Leonardtown1 source · verified July 2026Mardela Springs1 source · verified July 2026Millington1 source · verified July 2026Mount Rainier1 source · verified July 2026New Market1 source · verified July 2026New Windsor1 source · verified July 2026North Beach1 source · verified July 2026North East1 source · verified July 2026Poolesville1 source · verified July 2026Ridgely2 sources · verified July 2026Rising Sun1 source · verified July 2026Rock Hall1 source · verified July 2026Rockville1 source · verified July 2026Salisbury1 source · verified July 2026Smithsburg1 source · verified July 2026Snow Hill1 source · verified July 2026St Michaels1 source · verified July 2026Sudlersville1 source · verified July 2026Thurmont1 source · verified July 2026Walkersville1 source · verified July 2026Wicomico1 source · verified July 2026
Counties & regions
Allegany County1 source · verified July 2026Anne Arunde County1 source · verified July 2026Baltimore County2 sources · verified July 2026Calvert County1 source · verified July 2026Caroline County1 source · verified July 2026Carroll County1 source · verified July 2026Cecil County1 source · verified July 2026Charles County1 source · verified July 2026Dorchester County1 source · verified July 2026Frederick County1 source · verified July 2026Harford County1 source · verified July 2026Howard County2 sources · verified July 2026Kent County1 source · verified July 2026Montgomery County1 source · verified July 2026Queen Annes County1 source · verified July 2026St Mary's County2 sources · verified July 2026Talbot County1 source · verified July 2026Worcester County1 source · verified July 2026
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