Early 90s is about how far back you have to go, around here, to get an appreciably better-built house. Solid wood trim and doors! Cabinets that don't fall apart when you so much as look at them! All in working-class houses of that age. I swear even the light switches feel like they're built better.
As long as it doesn't have a wood-single roof. Those haven't been good since some time in the '70s. Demand shot up in the '80s and they built a shitload of houses with fancy "50-year" wood roofs, but there wasn't enough lumber of the quality required to make them actually last 50 years (both increase in demand and an ever-declining quality of lumber in general caused this, I think) like older wooden roofs did, so they all started leaking after like 10-15 years. But at this point most of those have been replaced with regular ol' asphalt.
As long as it doesn't have a wood-single roof. Those haven't been good since some time in the '70s. Demand shot up in the '80s and they built a shitload of houses with fancy "50-year" wood roofs, but there wasn't enough lumber of the quality required to make them actually last 50 years (both increase in demand and an ever-declining quality of lumber in general caused this, I think) like older wooden roofs did, so they all started leaking after like 10-15 years. But at this point most of those have been replaced with regular ol' asphalt.