It's only recently that legislation was brought in that made insulation in houses complusory. Our first rental here had window frames thicker than the walls! I remember our first night in it - no heating - on airbeds, in sleeping bags wearing PJ's, thermals, socks, fleeces, hats and covered will all our towels. Every time we had string winds the house felt as though it would blow off it's foundations! And yes they sold it!
New homes are built from a mixture of materials including - brick, wood, rendering (on timber frame) and masonary. Some also have steel frames and some are built with corrugated iron.
We have friends who are architects and they advise that a properly insulated and double glazed home will only need a minimum of heating. Roll on the new house! By the way if you have a well insulated dry house - it's a whole lot ehalthier than central heating
M