Sure there is some survivorship bias, but the cheap mass housing of the Victorian or Edwardian eras are often still around. Not just from the famous Victorian p

Sure there is some survivorship bias, but the cheap mass housing of the Victorian or Edwardian eras are often still around. Not just from the famous Victorian philanthropist industrialists (Cadbury, Lever brothers, Rowntree, Titus Salt etc) with their model villages for workers, but even the cheap stuff built for the collieries and mills, or early social housing. The social housing of the 1930s have, thanks to their sell off, often become the desirable estates of today. Of course there's also been a fair amount of German bombing and slum clearing that's thinned out the older stock. There's some key differences in how things are built that mean there will be precious few 1970s and 2010s homes surviving for 300 years. Victorian: Single or rarely double skin brick for most internal walls. Until the 70s or 80s breeze block was an acceptable cheaper alternative. Resiliant against a dozen generations hanging pictures, making adjustments to rooms and features, hanging flat screen tvs etc. Adds significant natural sound proofing. Roofs built with large scale carpentry and joints. Remove every nail and bolt and the roof will still be gale and rain proof. My current house doesn't seem to ever have had any nails or bolts in the roof space. The 30s house I used to have seemed to have just a few token ones. Slate and small tile (shingles in the US?) should last around a century and be an easy replacement. Some of the cast iron gutters and rain goods will be shot after a century, but plastic often needs replacing after 30. Crucially the foundations are built, often providing a handy cellar, rather than being a weak pour of a foot or two of concrete. Sometimes comes with a downside. One house, in Manchester, was built with engineering brick. Even the internal walls. So damn tough it took time to get a drill or angle grinder into it let alone bang a nail in for a picture. :) New: Internal frame and plasterboard walls, sometimes between houses meaning limited hanging of tvs and pictures, and adjustments even for the first generation of occupants. 300 years of home improvements and decoration will not work here. Listen in on the neighbours with ease, even when you'd rather not. Roofs built from pre-assembled trusses. Lose the ironwork from age or rust and the whole roof will be on the brink of collapse as the steel joints are structural. Not amenable to loft extensions, storage or even surviving the decay that frequently affects the eaves (You can't replace the rotted part as easily as they're now part of the structure). The modern style of large tile and truss means roofs are much shorter lived (I'm told around 40 years). Now, if only there were some houses being built using pre-war methods and strength of materials with current levels of insulation, renewables and electricals we'd be golden for the future. :)