394366 Networking Web Site

I want to create a website in which there are contractors and clients. Both will create a profile for themselves. The Clients will put up a service they want done. Contractors will be matched up with the clients according to there zip code and surrounding zip codes at a distance chosen. The contractors will then bid on the service being asked of. In which the client will pick the best option for them. Every time there is a project posted there will be an email sent to the contractor and every time a bid is put in for the service the client will be sent an email. The client will have it up for 60 days. in which he must pick a contractor. He can pick a contractor before as well.