Thanks for the info. I think you may be correct in the fact all the walls on the exterior are LBWs. The cottage is single story, and has an unfinished crawl in attic only. I am trying to aviod having contractors make extra trips, by having two optional floorplans ready for them to bid on. One step in one of htem is removing a center wall which runs a partial span of the length of the house, but appears to have been added in a remodel years ago. The other plan includes adding a loft bedroom, which of course would add a whole new aspect to the remodel.