When we moved into Amelia in January I was surprised that not only where the inside wall studs metal but they were on 24" centers vs. 16" . It seems the
outside studs are wood but all inside walls are metal studs. House is just about 9yrs old. That threw me for a loop when trying to mount our TV on the wall. Had to stop and regroup!
Everything I saw up in the attic (the visible framing) was wood.