The Wilvan house is a rare and highly unusual form of mid-20th-century non-traditional housing. Designed in the 1940s by engineer Owen Williams and manufactured by W & C French, only two semi-detached examples were ever built. Constructed using precast reinforced concrete panels and distinctive corner columns, Wilvan houses reflect post-war innovation but require careful inspection due to the long-term behaviour of PRC construction and embedded steel reinforcement.

Overview of the Wil-Mac House The Wil-Mac house, a distinctive property type from the 1960s, stands as a testament to the era’s innovative approach to system-built housing. Designed and manufactured by Dow-Mac (Products) Ltd and Wilson…

Introduction to the West’s 5M House The West’s 5M house, a product of the 1960s, stands as a testament to the post-war era’s innovative approach to housing. Manufactured by West’s Piling & Construction Co. Ltd and…

Historical Context and Manufacturing The Wessex house, a notable example of system-built properties, emerged during the post-war period in the UK. These properties were primarily constructed between the 1940s and 1960s, a time when there was…

Historical Context and Background The Webb House, a notable example of post-war British architecture, was designed by H.F. Webb and manufactured by Permanent Pre-cast Constructions Ltd. These properties were constructed in 1947, a period marked by…

Historical Context and Manufacturing The Wates house, also known as the PH6, is a notable example of post-war British architecture. Manufactured by Wates Ltd, these properties were constructed between 1947 and 1956, a period marked by…

Overview of the Waller House The Waller House, a distinctive property type in the UK, is a testament to early 20th-century innovation in housing. Designed by J H de W Waller and manufactured by Waller Housing…

The Unity Type II house is a post-war non-traditional property built during the 1950s using prefabricated reinforced concrete components. While identifiable by its pitched tiled roof and concrete panel construction, this house type is associated with known structural risks including cracking to PRC columns, corrosion of steel elements, chloride contamination and the presence of asbestos-containing materials, all of which require careful inspection and long-term management.

The Unity Type I house is a post-war system-built property developed during the 1950s to address severe housing shortages following the Second World War. Manufactured by Unity Structures Ltd and Unity House Construction, approximately 19,000 Unity Type I and Type II houses were built across the UK. These properties typically use precast reinforced concrete columns and panels, with medium-pitched tiled roofs, and are now recognised as defective under the Defective Premises Act due to inherent structural risks associated with their construction.

Overview of the Unitroy House The Unitroy house, a distinctive property type from the 1950s, stands as a testament to post-war British ingenuity in the construction industry. Designed by M Flatman and manufactured by Unitroy Ltd,…

Understanding Unit-Built Houses Unit-built houses, also known as Unit Construction houses, are a unique and fascinating segment of the UK property market. These properties, primarily constructed in the 1940s, offer a distinctive architectural style and construction…

Uniment houses are a rare form of 1940s system-built housing, constructed using pre-cast concrete components to address post-war shortages. Typically identified by their rendered walls and steep gable roofs, these properties rely on clinker PRC panel construction with embedded reinforcement. The main inspection focus centres on render cracking, moisture penetration, and the potential for concealed corrosion or timber decay, all of which can affect long-term performance despite a relatively simple external appearance.