Post-war housing typologies in London
Post-war housing (1945–1979) in London is dominated by three typologies. (1) Late-1940s and 1950s council and ex-council housing — Becontree expansion, Roehampton estates; cavity wall construction; thin slab concrete floors at ground level; concrete tile or pantile roof; minimal external detail. (2) 1960s and 1970s suburban semi/detached — Hounslow, Bromley, Wimbledon, Sutton; cavity wall; concrete tile or asbestos slate roof; larger windows, integrated garage typically. (3) High-rise blocks and slab blocks — Trellick Tower, parts of Aylesbury Estate; concrete frame; specialist retrofit market. This covers typologies 1 and 2 (single-family houses). Post-war single-family houses typically 70–120m² original; minimal period character (vs Victorian/Edwardian heritage value); strong thermal performance gains available; commonly EPC E or F at purchase improving to B or C post-renovation.
Thermal upgrade — the biggest opportunity
Post-war houses commonly have the worst thermal performance of any era — single-glazing original (often replaced once already in the 1990s with uPVC double glazing now end-of-life at 25+ years); poor or absent cavity wall insulation; limited loft insulation; original heating systems at end-of-life. Comprehensive thermal upgrade: CWI bond-blown £1,800–£3,500; loft insulation upgrade to 270mm £450–£900; double-glazing replacement £4,500–£12,500 for a typical 3-bedroom; new combi or system boiler with TRVs and smart thermostat £2,500–£4,500. Total thermal upgrade £9,500–£21,500; EPC improvement E/F to B/C; annual heating bill reduction £600–£1,200; ECO4 and Great British Insulation Scheme grants £1,200–£3,500. Air source heat pump (ASHP) retrofit £8,500–£14,500 + £7,500 BUS grant = £1,000–£7,000 net cost; typically only pays back where existing boiler is end-of-life and full radiator upgrade to oversized low-temperature radiators is included.
Layout reconfiguration
Original post-war layouts were typically cellular — separate dining room, separate kitchen at rear, separate front lounge; small individual rooms; narrow hallways. 2026 buyer expectation: open-plan kitchen-diner-living. Reconfiguration: knock through the kitchen-dining and dining-lounge walls (internal partition walls in post-war houses are typically non-load-bearing — survey first; load-bearing walls require £4,500–£8,500 of structural steel); install single-flow open-plan kitchen-diner-lounge. Combined floor area typically 36–48m² becoming one room. Add rear extension (PD route, single-storey rear, 4–6m depth, 18–24m²) to create a generous open-plan rear room; alternative: knock through with no extension and rely on improved natural lighting. Open-plan reconfiguration £4,500–£12,500 for internal demolition and structural work; full kitchen relocation and new fit-out additional. Total ground-floor reconfiguration + extension £85,000–£140,000; transforms the property's family-living credentials and adds £80,000–£180,000 to sale value.
Specifics for 1950s–1970s post-war houses
Five specifics that differ from Victorian or 1930s renovations. (1) Asbestos prevalence — 1950s–1970s houses commonly have asbestos: Artex ceiling and cornice; asbestos-cement roof slates; thermoplastic floor tiles with asbestos backing; AIB on flues and around boilers. Always commission asbestos survey £350–£900 before stripping; budget £900–£3,500 for typical asbestos removal. (2) Concrete floor slabs — many post-war houses have suspended concrete slab ground floors with limited insulation; retrofit thermal insulation involves either lifting and re-laying the slab (£180–£280/m²) or applying internal floor insulation on top with raised flooring (£85–£140/m², 60mm height build-up). (3) Tile-hung facades and pebbledash — 1960s suburban Hounslow and Twickenham houses often have decorative tile-hanging or pebbledash; restore or replace; £85–£180/m². (4) Garage integration — many post-war houses have an integrated garage; converting to habitable space (utility, study, bedroom) adds 12–18m² of floor area at £18,500–£32,500. (5) Reduced character — post-war houses lack heritage detailing; restoration is generally not viable. The renovation strategy is 'remove old, install modern' rather than 'restore original' — closer to a new-build interior than a heritage restoration.
