What you need is the InteriorDesign control pack from InteriorControls.com
This control pack comes with a whole bunch of stuff that will save you literally hours of work,
For example:
ICRoom room - new ICRoom;
room.Add(new ICFloor(FloorType.Carpet, ICColor peach);
room.Add(new ICTable(TableType.Coffe, ICWoodType.Teak);
...
room.Render();