Sort of, yes. They knew that they had to prevent water so you tend to see homes with larger eves than post WW2 homes. You'll also see attics with windows which

Sort of, yes. They knew that they had to prevent water so you tend to see homes with larger eves than post WW2 homes. You'll also see attics with windows which seems weird until you realize that was designed to prevent condensation. Also they built homes much smaller (the average home was less than 1000 sq feet 100 years ago, today it's 2400) and they tended to have smaller, compartmentalized rooms. This allowed for the inefficient home to use less energy anyways. Where I live there are quite a few ~120 year old homes that are about 2400 sq feet. These would have been built by fairly wealthy people of that time as evidenced by old directories which indicate a live-in servant at most addresses, rift sawn moldings and floors, and stained glass windows on landings/in dining rooms. And although inefficient, they are smaller so they use similar amounts of energy to much larger modern homes.