The Cornish Unit House is a type built from PRC (pre-cast reinforced concrete). There are two different construction types: Cornish Unit Type I and Cornish Unit Type II.
Designed by A. E. Beresford and R. Tonkin. Manufactured by the Central Cornwall Concrete and Artificial Stone Co and Selleck Nicholls and Co
1946-1960s. More than 30,000 were produced and erected throughout the UK to help with the post-was housing shortage.
Type 1 has PRC construction on the ground floor. There are nine or eleven concrete panels per storey slotted between columns in pre-formed grooves. The most recognisable feature is the Mansard hipped roof, which envelops the first floor. This is a tile-clad timber structure. The first-floor windows protrude through the tile-hung timber exterior. Some were built as single storey flat roof versions.
Type 2 has PRC construction on the ground and first floor. There are four Concrete panels per storey. They have a conventional hipped roof and were produced from 1954.