Maryland · MD
Maryland residential & ADU permit data
Local zoning in the busy Mid-Atlantic
Housing law
Accessory dwelling units in Maryland are regulated locally; there is no statewide ADU mandate, so rules vary by city and county.
Maryland has no statewide upzoning law; residential density is set by local zoning, with several counties pursuing their own reforms.
Local zoning (no statewide mandate)
Jurisdictions we cover
Baltimore
Why Igni for Maryland
A dense Mid-Atlantic market anchored by Baltimore and the D.C. suburbs
Live Baltimore permit data, sourced from official open data
Local-first permit intelligence across counties and cities
Start tracking Maryland permits
Fresh, filterable residential and ADU permit leads — delivered before your competitors even know.
Sourced live from the City of Baltimore open-data portal (Open Baltimore; open license).
Informational only, not legal advice. Housing law changes — verify current statutes before relying on this.