Build a custom reverse service bidding platform

I'm looking for a reverse service bidding platform. - Service providers will register there business and services - Customers will request a service and local providers will be requested to bid - Service providers will be star rated with feedback - System will be module based, making it flexable for future upgrades - System will use SEO friendly URL's and every region/county/post code will have a unique url - Built in blogging platform to keep customers updated, this can be wordpress based The following points will need to be adhered to; 1. Developed using the latest PHP 5+ technology 2. Developed using clear concise coding that can be amended by anyone easily 3. This platform will be unique, not using any existing open source code, it will be developed from the ground up 4. The intended use of this platform will not be disclosed to the developers to protect intellectual property rights. this information is not required. 5. UK Bidders only, bidders outside the UK will be removed 6. Copyright to the developed code will be signed over to Pena Net following completion, and a contract will be signed to prevent resale of the code.