日本の家作り（据え付け作業）Japan builds house in 1 day
Why Hacker News recommends it
Cited in prefab and housing threads as proof that high-quality modular homes can be assembled on site in hours.
What it is
Rachel and Jun film Toyota Home Aichi installing a prefabricated house unit in Japan, with the assembly and roof waterproofing completed in about half a day.
Recommended by 1 HN commenters across 1 different months, 2016 to 2021.
What Hacker News said
Recommends sithadmin · 2018-06 · on “Developers are manufacturing prefabricated apartment buildings”
Here's a cool video of ToyotaHome (yes, that Toyota) assembling a modular home in Japan: [this video] Their website: [LINK] (JP only, no English)
Cites Mindless2112 · 2016-12 · on “Who Lives with Their Parents?”
Toyota manufactures houses in Japan [1]. If they sold them in the US, I'd buy one in a heartbeat. [1] [this video]
Cites tekacs · 2017-03 · on “A $10K tiny house 3D-printed in 24 hours”
It might come down to culture/demand? In Japan where it's preferred to make a new home rather than buy a pre-owned one (outside the big city), pre-fab seems to have taken off rather more (13% of new builds in 2013). For example, a house built in a day (customisable, moderately expensive but very high quality): [this video]
Cites Mindless2112 · 2021-03 · on “What We Can Learn from Japanese Prefab Homes”
There's a good chance of not seeing one being built since it might only take 6 hours -- see [1]. [1] [this video]