One of the first issues is the orientation of the house. Solar panels do better on the south side. You should research whether your roof needs to support more weight. You will also do well to consider all aspects of solar building --- you can find books available in e-format for this. Go to Amazon and read reviews carefully. Things like roof overhang, kinds of windows, etc, can make a big difference in cooling your house (I'm assuming in India, heating isn't a big issue). For the solar panels, what's available where you are is a starting point. I will note that in sunny countries, like Turkey and Tunisia, I see a lot of solar hot water on roofs, but not so many solar panels.

Costs really vary in different areas and they are always changing . You would be best to talk to 3 local contractors who have good reputations and ask them what their building costs are. When you say "interiors" do you mean furniture? Or the interior finishes? The contractors will be able to give you the interior finishes numbers, but you can talk to a few local interior designers for estimates on furnishing a house. Also, ask the contractors about landscaping costs. Do you want a pool or an outdoor patio? Or just planting? Plus the building permit costs in your area. Check with the local building department. Some areas charge school fees.............. It would be great if you could factor in an architect to help you pull all of this together. Also this should be an architect who has great references and is known for working within budgets. Once again, you should ask 2 or 3 for proposals to see how they price their services. It can vary.

Hello there, You need to consult with a local architect first for the layout and plan approval. They will provide you with floor plan and furniture layout, 3D elevations etc. Also, they would send them for approvals. What you're asking for is a paid professional service. Please consult locally first. Else, if you need anything specific, please feel free to connect with us. Also, your budget is too tight for 800 sqft unless it is an open plan. Cost of construction starts from 1100-2000/ sqft depending on materials and contractor. Usually that will cover design and approvals costing as well. Regards, Aurum Ideas and Spaces Bhubaneswar

Hi Chandrikat, we are design team from Bangalore and would be interested in helping you build a home that will meet your comfort and taste within the planned budget.. please get in touch with us at 9008222431