1945–196421% of homes here
Post-war rebuilding, largely cavity-walled, but including system-built and non-traditional types — reinforced concrete, steel frame and prefabricated panels — put up quickly to address the housing shortage.
What we usually find. The conventional stock of this period is usually straightforward. Non-traditional construction is a different matter: some types are designated defective, and most lenders treat them differently or decline them, which affects both mortgageability and resale.
Worth knowing. Identifying the construction type is the first job on anything of this age that does not look conventionally built. A Level 3 survey is normally the right choice here, and lending should be confirmed early.
2000 onwards20.3% of homes here
Modern insulated construction to current Building Regulations, normally with a ten-year structural warranty, high levels of airtightness and mechanical ventilation in the newest homes.
What we usually find. Structural defects are uncommon; the recurring themes are condensation and interstitial damp where airtight construction meets ventilation that is switched off or never commissioned, along with workmanship snags in newer developments.
Worth knowing. On flats and any property with external wall insulation or cladding, establish the position on fire safety documentation early, as it can hold up a sale regardless of the building’s condition.
1965–198219.4% of homes here
Cavity walls with insulation increasingly built in, flat-roofed elements such as garages, dormers and rear additions, and a broader range of manufactured materials.
What we usually find. Flat roofs of this era are frequently on their second or third covering and are a common source of water ingress. Textured coatings applied before the mid-1980s may contain asbestos, as may some cement products, soffits and floor tiles.
Worth knowing. Asbestos-containing materials are usually safe if undisturbed and in good order, but they matter a great deal if you intend to remove ceilings, take down a garage or open up the layout.
These are tendencies of the local stock, not findings on any particular house. A well-maintained Victorian terrace can be in better order than a neglected 1990s semi, which is the entire reason a survey is done on the building in front of you rather than on its postcode.
