The current Trevor Hall was built in 1743, but occupies a much more ancient site which was the home of John Trevor, builder of Llangollen Bridge. The hall is one of a series of important North Wales houses built by various members of the powerful Trevor family. The hall in Trevor has an impressive fatade of the George II period. Constructed of brick, the south front is a modernisation of the much earlier house, built entirely of stone. The brick front with stone base and quoins was added by Bishop Trevor in the mid eighteenth century. The brickwork is broken up by two sandstone string courses and stone key stones over the windows. The front door has a stone surround and pediment, and a double flight of stone steps with plain iron baluster rails leading up to it. The eastern wing was remodelled and extended northwards for J.C. Edwards, probably by G.C. Richardson. In the mid 1950s the house was sold away from the estate, after which it suffered a succession of owners. In the winter of 1963 the hall suffered a mysterious and disastrous fire and was reduced to a shell. As the main walls and most of the main staircase were intact, however, the house was allowed to stand, as a preservation order had been placed on it two years before. It stood as a ruin for 25 years until in 1987 a Mr. Michael Tree purchased the property and, assisted by grant aid, embarked upon a programme of restoration, bringing the house back into habitable condition. Eleven years later Michael Tree sold Trevor Hall to the Parkers, who completed the restoration of the interior.