The site is located on the northern side of Newport Estuary in the Pembrokeshire Coast National Park, on the westernmost coast of Wales. A heavy rendered walled enclosure provides shelter from cold north winds and contains service rooms and circulation. At upper ground level an open-plan living space enjoys fabulous views across the wide estuary and out to sea – all beneath an open timber-raftered roof that tilts up to a clerestory window on the north side. These spaces are fronted by full height, sliding glazed screens that open onto a timber-decked balcony beneath the over-sailing roof. On the lower ground floor, the staircase opens up into a day room that connects directly with the garden. Uniting both levels is a slate chimneystack, providing a fireplace to the living space above and barbeque to the lower level terrace area. Trewarren House received a 2013 RIBA Welsh Architecture Award and the 2013 Gold Medal for Architecture in Wales.