The framing on the new ones under construction is wood, some are using cement block and/or brick for outside walls. Those that are completed on the outside but not the interiors have workers covered in plaster carrying what looks like tools for plastering walls, walking in and out of the houses.
On the completed homes some of the outsides are finished in a smooth or textured material that looks like stucco. Some appear to to be all wood replicas or stylized copies of historical Russian country houses and one looks like a log cabin (a very large 2 story log cabin).