Building a duplex house plan is a good way to start small in multifamily housing. The blog Guide to Finding Your Duplex House Plans is helpful in selecting your construction plans. http://www.houseplans.pro/blog/post/finding-right-duplex-house-plan

Manipalgoyal: I like your basic plan. It is well thought out....What does the top floor look like? The only thing that I would do differently from my very "Western" perspective would be to move the rear right bedroom upstairs and open up the back courtyard to the kitchen area. I would create a "great room / kitchen area with doors that open both to the front courtyard and to the back. This allows for good cross ventilation to help keep the house cool and comfortable on a hot day. It also provides easy access to the rear yard area without having to walk through a bedroom. Now all of the precious outdoor space is easy to use. The other element that I would introduce would be an atrium (or an opening in the floor) all the way up to the second floor with openable windows high up on the second floor to allow hot air to escape to the top of the house and out (since hot air rises) This is called the "chimney effect" and is another way to keep the house well ventilated. Of course this is how it has been done in hot climate countries for years, so you might be familiar with this technique already. Even if you don't change it, your floor plan is very nicely laid out. I would be happy to help you answer any additional questions that you might have. I do have a few questions for you: 1. Where is the laundry room? Is it in the storage space? This does seem a little narrow. How wide is it? You might want to work on how this space actually lays out. Is there a sink in this space too? 2. Why do you have such small openings to the outside from the drawing room and the rear bedrooms? Are they doors or windows? Wouldn't you wnat a door with an openable window with a screen adjacent so that you could have ventilation at night without having the door open? 3. How will you lay out the kitchen? Who is doing the cooking in your household? Is cooking a family event or is it done by a helper? You either want a bigger more open kitchen (Western design) or a more private kitchen (Asian design) Or a combination of both.......To me this is the most important part of the house where the family gathers and hangs out..... I would love to hear back from you. Christine Lampert

Generally you can do pretty much anything with a house if you have the time and money. with a limited budget it does limit what you can do especially for kitchen remodel costs. A kitchen renovation needs plumbing - where is it located in the garage now? Will you build your new kitchen etc on the existing concrete garage floor? If you build a new floor above the existing garage floor that may give you more options for remodeling. Let us know about these answers and we can try and give better advice. Also consider talking to a local kitchen contractor or kitchen cabinet shop - they may be able to answer many of your questions and you will want to talk with them eventually anyway for your project. To get a cost of the cost to remodel your kitchen the website http://www.remodelormove.com/kitchen-remodelling The calculator gives the cost to remodel your kitchen broken down by labor and materials

Mohammad. I understand your program. You may be lost in the details at the moment. Please do follow and trust the advice given here by all these people. You are about to embark on a reasonably expensive journey. Get professional help with someone who you can sit down at a table and brainstorm with them your ideas and intentions. There are Architects and there are professional building designers who are members of the American Institute of Building Design (AIBD) who are well versed in projects such as yours. I personally love a design challenge. After 38 years designing homes and special use buildings I enjoy this type of challenge the most. I am in Ohio and may not be close to where you are but I am sure with a little investigation you will find the best design professional for you.