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
Cities we cover in Maryland
Live dataExplore live, sourced permit activity for each Maryland jurisdiction.
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
Maryland ADU & permit data — FAQ
Does Maryland allow accessory dwelling units (ADUs)?
Accessory dwelling units in Maryland are regulated locally; there is no statewide ADU mandate, so rules vary by city and county.
What is Maryland's missing-middle / upzoning law?
Maryland has no statewide upzoning law; residential density is set by local zoning, with several counties pursuing their own reforms.
Where does Igni get Maryland permit data?
Sourced live from the City of Baltimore open-data portal (Open Baltimore; open license).
Which Maryland cities does Igni cover?
Igni has live permit coverage for Baltimore in Maryland, with more jurisdictions expanding.
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.