Plan to build a duplex house  

Please advise from where I can get brilliant idea for my proposed construction of a duplex as per the following requirements:
At ground floor: Covered verandahs at front & back. Two bed rooms (each of size 14'x12') with common bathroom(8'x10'). A kitchen(15'x12'), drawing cum dining room(20'x15') the floor of drawing room to be depressed by one step, Laundary room (6'x8'), Store (10'x12')



First Floor: Master bed room (15'x18') with independent bathroom & dressing space (12'x12'). Children's bedroom (12'x14') with bathroom (8'x10'). One sun room cum Library/study room (8'x18') adjoining the open terrace. Small kitchnet (6'x8').