Unified Real Estate App & Site

I need a complete property-listing platform for real estate agents that works seamlessly on both web and mobile. The website and the app must draw from one central back-end so that when an agent adds, edits, or removes a listing, the change appears everywhere in real time without manual syncing... (Budget: ₹1500 - ₹12500 INR, Jobs: Android, AngularJS, Django, Laravel, Mobile App Development, Node.js, PHP, Web Development)