You really think homes haven’t changed in how they are made? During the 1970’s I think is when homes started being pre-manufactured, much like a mobile home. They build the truss, and frame with pine, put up drywall with staples, and using standard format floor plans. If you want a basement, that’s just another cheaply built one piece concrete pour that will crack within the first year. Then they just roll the house down the highway on a wide load trailer.
I think home building has changed significantly over 100 years, and not for the better. My house was built on-site in 1955 with solid wood framing (with brick on the facade) that was probably ‘green’, with a concrete block basement. Way different than what they do now.
You are correct about things not changing for the better. The framing used in my parents house was old growth lumber from Minnesota. Framed and then real board on the side.
New houses in my neighborhood use the same basic construction as old houses, which was my point. But the wood to make the house like it was in 1920 no longer exists. That’s what a carpenter told my father.
So now we have 3D printing or light gauge steel construction which can’t burn (or not easily) and are less expensive to make and maintain.
Something with the way houses are built is going to have to change, new homes now are far too expensive.