GharKart Real Estate Marketplace Development

Hi, I want to build a professional real estate marketplace called GharKart – Your Property Marketplace. I need a responsive website, Android app, backend, and admin panel. The main feature is that users should be able to buy, sell, rent, and independently post their own properties, including houses, flats, plots, land, shops, and commercial properties. The platform should include: • User login/signup • Property posting with photos • Search and advanced filters • Property details page • Call, WhatsApp & enquiry options • My Properties & Saved Properties • Admin approval system • Free property listings • Paid Featured Listings • Agent subscription plans • Payment integration I have prepared a complete developer brief with all the detailed requirements. Please let me know: 1. Which technology stack do you recommend? 2. Estimated development timeline? 3. Total cost and milestone-wise quotation? 4. Any monthly/recurring costs? 5. Will I receive complete source code and GitHub access after completion? Please share your proposal. Thank you.