We should all appreciate that most homes were not done by teams of professionals back in the day. Multiple things can be true here, 1) building your own home will take a lot of time to get right (so time being used in place of money), 2) the skills involved are all completely learnable and do-able for an able-bodied person who again is willing to put the time in, and 3) its not worth it for the vast majority of people who don't want to learn these skills and would rather focus on their own work and pay someone else to be a professional in the space. And yes 4) I've seen quite a bit of DIY work in homes and sometimes its impressive but usually its questionable and sometimes even horrific.

That’s not historically uncommon though. Like the house I grew up in was a rural house built in ~1890 by the brothers who farmed the land. Of course it had the usual quirks of an old house, but it was well maintained over time and I wouldn’t view it as any kind of “monstrosity”.

Anybody remember Groverhaus?

My grandpa built a similar house under similar level of scrutiny roughly at the same point in life as I did, it was still standing and in good order when he died. At this point it's basically already paid for itself vs rent even valued at $0.