If you need to use roombox building components (windows or doors) decide on the scale you will be working in, based on the main pieces you need for your model. Common scales for school and club projects include:
1:12 Scale: Common dollhouse figures and accessories are available, as well as building parts, windows, and doors. 1:24 Scale: Smaller dollhouse figures and building parts are available, or you can use a range of items from toymakers Playmobil or Schleich, or “G” scale railroad items. 1:48 Scale: Smaller scale dollhouse buildings and parts, “0” scale train buildings and scenery, as well as 28 mm gaming figures, can be used.
The design can be modified to make paneled doors with simple beveled panels or make French doors with muntins, or full glass panels.