[3][better source needed] However, still wanting more space and to express his money and influence, Buckley recommissioned his cousin in 1882 to undertake a more extensive reconstruction to create the present Italiante style mock-castle in Bath stone, known on opening in 1886 as Brynycaerau Castle.

[2] Originally orientated south-west, Buckley-Wilson reorientated the entrance to the south-east to overlook the earlier structures grounds, the surrounding countryside towards the River Loughor estuary, and onwards towards the sea.

[4] He added a central three arched porte cochère (carriage porch) to accommodate the new drive, and the two small symmetrical supporting side extensions with projecting bays.

All except the rear elevation are symmetrical, achieved by extending the northwest wing and reconfiguring the out buildings; on all the corners the quoins stand proud.

The house is topped by a low pitched slate roof to give a castle-like feel on approach, behind parapets with balustrades and urn finials.

Buckley-Wilson was so proud of the finished structure that it formed part of his application to be admitted as a fellow of the Royal Institute of British Architects.

[4] In February 1912, the parties agreed a 999-year lease, on the conditions that:[5] These were scoped to allow the property to be opened on the couple's first anniversary, and secondly because Sir Stafford had a belief that local authorities were inclined to be somewhat slow, and this was a way of enforcing progress.

[4] During the 1930s, the council acquired 5 acres (2.0 ha) of additional land to the north-east, extending today to where Parc Howard Avenue lies.