Which is just bad construction? You can add coolant reservoirs to buildings. The tiles in Mediterranen housing come to mind. You could make temperature creep h

Which is just bad construction? You can add coolant reservoirs to buildings. The tiles in Mediterranen housing come to mind. You could make temperature creep highways, like moving the water of a night cool pool into the cellar. It's just rarely done because moving part and lots of space. Finally AC, a gets your air cold, thus the materials in contact with air, but it's way to late a defense line. Sunlight does not have to reach your house. Plant trees or have masts with sunsails on them.