Maryland Critical Area: what it allows on a lot
Critical Area is Maryland law, and the official source is at dnr.maryland.gov.
Within 1,000 feet of tidal waters the Chesapeake and Atlantic Coastal Bays Critical Area law limits building and clearing.
Whether it applies to one lot turns on where the lot is and what it is zoned; the city, county or state office named in the law decides. Mapped areas are approximate. This is a plain reading of public law with its source, not legal advice.
Free, no account. ParcelSheet shows the lot's mapped size, parcel lines and flood zone, and this law on the lot's Maryland sheet.
Other Maryland laws on a lot: Accessory Dwelling Units Act of 2025 (HB 1466).