Concrete slabs
Gravel Pads
Wood Or Paver Retaining wall
Site Grading
Wood or Composite
Manufactured entry door.
https://www.homedepot.com/b/Doors-Windows-Garage-Doors/Clopay/N-5yc1vZar38Zd2
Other and sizes/styles available.
Windows
Pressure Treated Ramp