The £5m renovation is expected to transform the currently derelict building into a centre for culture, arts and education.
The project will see at-risk areas such as the medieval keep and archway, Jacobean mansion and service wing be conserved, while the castle’s ancient gate, the oldest of its kind in the UK, will be restored and opened to the public. Additionally, a connection between the castle and the town will be reinstated.
In addition to project management, Mott MacDonald is providing mechanical and electrical, fire engineering and infrastructure design services for the multidisciplinary team led by Rick Mather Architects.
Brecon Beacons National Park Authority gave planning permission for the project in November 2016 and £4.6m lottery funding is in place for the renovation.
Hay Castle was built in the late 12th century by Norman Lord William de Braose. It was sacked by Llewelyn II, the last Prince of Wales, in 1233 before being rebuilt by Henry III. After being occupied by various families for centuries, the castle was purchased by Edward Vernon Tuson after World War II, who later sold it to Richard Booth in the 1960s. For the first time in 800 years the castle is held public ownership after Richard Booth sold it to the Hay Castle Trust in 2011.
The complete restoration of Hay Castle is expected to be completed in early 2019.