Rhiwlas Hall, a Regency extravaganza, was demolished in the 1950s and replaced by a smaller house designed by Clough Williams-Ellis.

[1][2][a] Richard John Lloyd Price (1843–1923) was a noted sportsman, who hosted Britain's first sheepdog trials at Rhiwlas in 1873.

Thomas Rickman undertook some work on the estate at the time of the reconstruction, including the entrance gate,[8] but Pevsner does not ascribe the house to him.

The replacement, designed by Clough Williams-Ellis, is considered by Richard Haslam, Julian Orbach and Adam Voelcker, writing in their 2009 volume Gwynedd in the Pevsner Buildings of Wales series, to be among his best work.

These include the game larder,[9] the ice house,[10] the castellated stables,[11] and the main gateway and estate walls.