Knowledge Base

The Burt Boulton bungalow is a non-traditional, system-built property dating from the mid-1970s, designed by H K Harwood and manufactured by Burt Boulton Ltd. Built around 1975, these single-storey dwellings use factory-made timber frame units with rendered plywood external walls and shallow-pitch or flat roofs. While the bungalow layout offers straightforward single-level accommodation, inspection focus is firmly on the condition of the external cladding, roof coverings, and moisture protection, as deterioration to these elements can directly affect the concealed timber structure beneath.

The Bricket Wood Special house is a rare and unusual form of non-traditional construction dating from 1929, with only four examples ever built. These semi-detached chalet bungalows combine concrete, timber, and asbestos cement within a complex wall structure that demands careful inspection. While visually distinctive, their long-term performance is closely tied to moisture management and the condition of concealed structural elements, making professional assessment essential before purchase.

The Arcal house is a rare form of 1960s system-built housing, designed and manufactured by Gee Walker & Slater during a period of rapid post-war construction. Typically found as bungalows or two-storey semi-detached and terraced houses, Arcal properties are characterised by rendered external walls, medium-pitch tiled roofs, flat-roofed entrance lobbies, and metal-framed windows. Their platform timber frame construction, combined with plywood sheathing and rendered finishes, means long-term condition is closely linked to moisture control, detailing, and ongoing maintenance.

An overview of **Arrowtrim (Prowting) houses**, a late-1960s system-built property type found across UK suburbs. The article explains their timber frame construction concealed behind traditional brick and tile finishes, outlines typical characteristics and common defects, and highlights why moisture control and frame condition are critical inspection priorities when buying one today.

The Bennett House is a mid-1960s non-traditional property built using a timber frame system with Tyrolean rendered external walls and a tiled gable roof. While often well laid out, these houses rely heavily on effective moisture protection and ongoing maintenance, particularly to the external render and concealed timber structure. Careful inspection is essential to understand condition-related risks specific to this form of construction.

The Bennett House is a non-traditional property type introduced in the mid-1960s and manufactured by H W Bennett Ltd. Commonly found as two-storey detached houses, these homes are characterised by timber frame construction, Tyrolean-rendered external walls, and tiled gable roofs with timber boarding to the apex. While distinctive in appearance, their long-term performance is closely linked to moisture control, render condition, and the maintenance of concealed timber elements.

Anvil Houses are a distinctive non-traditional UK house type built between 1965 and 1979 using a timber-framed system with external brick cladding. While generally robust for their era, these properties require careful inspection, particularly around first-floor window sills and vapour control layers, where movement and concealed moisture issues are most likely to arise.

The Anchor 12M house is a system-built property developed between 1967 and 1974, most commonly found as bungalows or two-storey terraced homes on suburban estates. Although outwardly traditional in appearance, these houses rely on storey-height timber frame panels concealed behind rendered, stone, timber, or tiled finishes. From a surveying perspective, the long-term condition of these concealed timber elements is critical, with moisture ingress and localised decay representing the primary inspection risks.