Listing designations Mostyn Hall is listed Grade I, the highest grade, as is Porth Mawr. A number of barns and agricultural buildings on the Mostyn Estate are listed Grade II* including the
dovecote and attached range, a barn to the north-east, another to the north-west, and a farm range to the south-west. A house, and
weighbridge are listed at Grade II, as are John Douglas's gates. On the wider estate, listed structures include an
icehouse, the
walled garden, and a
gamekeeper's cottage. At the estate's perimeter, a number of lodges and their associated gates and railings all have Grade II listings including Drybridge Lodge, Ivy House, Penlan Lodge, and Seaview Lodge. The gardens are listed as Grade II* in the
Cadw/ICOMOS Register of Parks and Gardens of Special Historic Interest in Wales. ==Gallery==