3 vertical areas are ideal places for adding extensions to increase floor area. Add a garage, bedroom, kitchen, dining room. The Vertical Base Option increases total height enough for adding a second floor or loft. The same VBO treatment can be applied to the Star Dome 2 A and C types. Another option is to leave off the VBO and keep the 3 vertical areas for your doors and windows.

 

 
 

 

Compare this with the similar Garden Dome 1 (rotated) design and the smaller 13 ft version
 
 

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