Dear Khurshid, Ask your builder if the double height terrace can be used for staircase. That way you can shift your dining table to the present staircase area which is just adjacent to your kitchen and still can keep it double height which will also serve as entrance area. Doing so you get more additional space for your living area and can have a more comfortable seating arrangement. Also by shifting your staircase to double height area makes more sense as you can still use it as terrace seating. You don't even need to have rcc staircase. Go with metal staircase with wooden treads. Which is space saving and looks super cool. Its a penthouse so do something out of the box. You cant do much with the structure but you have infinite possibilities in interior work to make it special. I hope that makes some sense to you.:) Regards, Ar. Ravi Prakash

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