Higher location values are supposed to lead to more intensive land use (more dwelling units per acre) but we don’t tax land enough for this to work properly. I’d still consider a housing market without land value tax to be fundamentally broken. Adding on arbitrary constraints on building (eg, beyond health and safety regulations) makes it si much worse.

As for 100 year old houses being considered high quality… there’s definitely going to be a survivorship bias for such buildings that didn’t get replaced while they could (prior to mass downzoning on the 1970s) but they literally didn’t have building codes back then. Lots of money needs to be spent to retrofit old buildings for modern seismic and energy standards.

Also — not saying you’re guilty of this — there is a lot of racial prejudice when folks criticize the “poor craftsman” of modern construction workers compared to those of past generations, as they more often tend to be Latino workers these days.