This was a design build project. Completed 20+ years ago with small and new additions every other year. The material consisted of natural stone as requested by the original owners. The front yard walkway and the front patios are all built using Travertine stone. The stone walls are built from the native stone that has been harvested from the surrounding area. The back yard patios and walkways are natural bluestone. Same is true for the pool copping and surround.