Build a two story with a garage under the top story. It will have to be long and narrow lot is not wide. 4 bedrm s will be tight, looks like you only have rm for about 1200 sq ft incl garage. Or you could put front door on side behind garage and stairs inside to go up to bedrooms and bath rooms. Have a small bathroom downstairs. With living area and kitchen, with dining area.

There are discrepancies between the two plans you have provided, so it is difficult to understand what has been built and what is proposed. That being said, the powder room will have more of an impact on the garage space than you are indicating, and think that will have negative impacts on the garage which you will want to avoid. The location by the dining room and stairs will also require significant changes to the plan in that area (powder room is still represented too small). The powder room adjacent to the pantry seems like a great place to put it, or in the ancillary seating space to the right of the main living seating. That seating area does not seem to have a great functional importance except to have the dining/living/side living space extend across the whole house, unless there is something happening that isn't apparent from the plan view alone.

As i told you i need a garage in ground floor for car parking n all from their stairs to (first floor) i.e, living room. I dont need stairs to b fully curved it can be curved at starting, if not possible straight is also OK. In first floor i dont need space in front. It can directly be main door of living room. There a kitchen, bedroom ( not a master bedroom just a bed and a wardrobe is enough ) with attached bathroom and small storage room ( storage room can come below stairs ). I want my living room to be big i dont need anything there just a sofa n TV set as i showed in the pics yesterday. As the living room becomes big i want little bit curved stairs not full curved just curved at starting. Then in (Second Floor) the master bedroom with attached bathroom, walk in wardrobe and small room for gym. I want round bed it is OK even if it is not near window but TV set should be opposite to that. Then to (third floor) a big party hall nothing else and finally to the terrace.

May i know the entry side and the margins on the two sides to be left. front and the side. ( i mean how much length in feet inches should be left on the two sides). you can look at the neighbouring duplex or bunglow to get the exact understanding of the margins. other things can be designed accordingly. i have a rough thought about the design... attached herewith....