This 3D model was originally created with Sketchup 8 and then converted to all other 3D formats. Native format is .skp 3dsmax scene is 3ds Max 2016 version, rendered with Vray 3.00 Not much. Revised stairwell to incorporate an elevator. Pantry in 1st attic, new dining room table, lined up livingroom and dining room doors. Rescaled pantry door - it was too high. And a Gothic Shower head by Double D. TY. There is a mechanical room for the elevator with outside access. Only the 3rd attic is not accessible by elevator. Stairs meet code.