I need a professional website design

General information for the website: We provide a portal for buying and selling land and property as well as all services included within the acquisition and construction envelope. Kind of development: New website from scratch Num. of web pages/modules: don't know yet Description of every page/module: n/a Description of requirements/features: - interactive - video - TV - Mobile - App CMS and Admin requirements: TBC Extra services needed: Customization, Optimization, Security Extra notes: