Trending 2 Storey Floor Plan With Column - Bonus room2,946 formal living room2,207 loft1,653 mud room1,293 office1,222. Adding a second storey is a surefire way to drastically improve your home's aesthetics, comfort, and price tag. 2 Storey Floor Plan With Column : This is floor plan of g+1 residential bungalow size = 48' x 60'.