When you use the term "Duplex", you mean that it is a two story house, correct ? In the USA, the term "Duplex" means two separate living units side by side......but in other parts of the world it means a two story residence. Please clarily that you are talking about a two story single familly house...... If so, the footprint that your house will have on the ground floor will be approximately 1000 square feet. Do you need to park a car on the site or is parking offsite? If the parking is offsite, then you have lots of room for a two story, 1800 plus square foot house. The design will be dependent on your personal criteria, and it would be helpful if you could hire a local architect to help you with the layout of the rooms. It should be relatively simple once all of the factors are considered.

Hi Deepasri, If you follow Vaastu, then I recommend that you have the Pooja room facing East. God’s idol should either face east or west. Expand your current pooja room to a study room that is accessible from your master bedroom or make it a store room where u keep ladder, travel bags,etc to be accessible from hall. And put the Pooja room next to it facing East in the hall.

One of my clients had no designated space for puja in their home, and they would have had to squeeze it into a passage somewhere. So when they came to me for ideas, I noticed in the floor plan that they had a beautiful covered verandah overlooking a private garden. The wall of that verandah was towards the east side of the garden. So I thought- why not carve out a rustic simple puja space here? Outdoors? The client was game. And this was the result- a 2'-0" x 2'-6" wood panelled niche in the wall, with a simple clay Krishna placed on a wooden bracket with a delicate hanging brass lamp

ground floor, reduce parking area by 2 feet, this will increase the drawing room to 18'. remove store and wall also, keep it open combining drawing and dining space. store can be accommodated below the stair and is more than sufficient. remove gap between stair steps of up and down (by removing one steps of E -W direction) this will give you another 1' in bedroom. to accommodate this removed steps have one diagonal step on landing