If this can be successfully "industrialized" and manufactured on a large scale, it'll be one of the greatest advances in the fight against poverty ever achieved.
Incredible houses printed from cement could help to end the global housing crisis, according to the company behind their creation.
The properties, which are currently at the concept stage, will soon be used to provide safe shelter for people in El Salvador and could one day be expanded worldwide to house billions.
The homes currently cost £7,200 ($10,000) to construct and take up to 24 hours to build, but for the production version this cost should be reduced to around £2,900 ($4,000).
They could also offer a viable option for the construction of off-world colonies on planets like Mars in the near future, the firm says.
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The company's Vulcan printer is used to create the properties, which can be built as large as 800 sq ft (75 sq ft) - around twice as large as the average 'tiny house' and comparable to one-bedroom apartment sizes in cities like New York and London.
There's more at the link, including lots of photographs.
Here's a brief video showing how the house is constructed of "printed" cement layers.
They're larger than many shacks in most shanty towns; and, for a large family, it would be no problem to build two of them side-by-side. As for utilities and services, that's a much larger job, and probably more expensive than the houses themselves; but given affordable housing costs, that's not an insoluble problem. Best of all, being built of cement, these are likely to be relatively safe against wind and weather, even hurricanes or nearby tornadoes. The roof may go, of course, but that can be mounted with stronger bracing to keep it attached except in the worst conditions.
All round, this is an excellent start. Anyone who's traveled and lived in the Third World will instantly recognize how important this is; and, for that matter, it could revolutionize "starter" homes here in the USA for lower-income households. Full marks to everyone involved for a really good idea, and making it work so well, so far. Onward!