website related to real estate similar to existing ones

I need a website where i will need regular additions. you need to tell me how you can make a website similar to investinnest dot com or proptiger dot com or indiaproperties dot com etc.... The idea is to make a website which brings in traffic through seo friendliness and thru emailers When you apply , please send a detailed report in attachment where you will mention: [login to view URL] which platform/software will you make the site. 2. which all functions the site will have. 3. how easy will be for a visitor to find relevant information. 4. how will you keep the visitor engaged on site. [login to view URL] to link bulk mailers to site [login to view URL] data can be pre-fed from your side for existing real estate projects in indiya. [login to view URL] a new upcoming real estate project , how easy will it be to add all required infos on the website [login to view URL] type of quick searches will be available to the visitor ? budgetwise, citywise , how many rooms property wise etc...? The seach should be helpful in making the customer narrow down quickly to desired property. [login to view URL] to maintain/utilize that database of guys who register and how to use these lists for automatic mailers etc.. [login to view URL] many people will be required to maintain/update such a website ==== while bidding please reply to all questions. demos or example sites will be good idea to mention