We're not even building Tiny Houses. That movement has faded away as the land permission issue dominated over their advantages.
Meanwhile: https://youtu.be/M73r32vK7C4
That's not a joke - there is a steep decline in being 'handy' - I'm doing everything I can to learn how to be but it still feels a bit unnatural. That lack of adaptability is like an extra tax.
I don't think my parents are more handy either, but that's a generation that bought their houses at 5x-15x lower prices so millennials like me could really do with being more hands on.
To put this in perspective, my father bought his house for 40k 20 years ago and now it is valued at least 250k. I earn about the same as he did 20 years ago and I suspect I earn more per hour than my university peers. Bluntly - they're poor - the most sensitive subject you could talk about is how much you earn. That's private.
It's not the cost of equipment that's the problem. The cost of good power tools is lower than before and they're more effective. Materials prices are higher but not that much. The big constraint is psychological, possibly followed up by permissions for building.
There's a weird psychology with this subject - weird to hear it described but it's there.
Somehow not having a house is believed to be less impoverished than going and building one. Count me out! I don't think forking over half your earnings to a landlord is sophisticated. I remember talking to people about the Tiny House concept and I got the strong impression that living in a modest self built dwelling was an admission of poverty.