Full Rental List Web Site

Looking to setup a full renetal listing site, the function of the site is to keep track of the listing allowing visitors to list items for rent and be able to search based on ZIP code, this would be a generic rental site, so rental could be home, apartment, vacation property, car, truck, boat etc.. etc..anything you can think of should be listed and people can do a search and contact the party that listed the item for rent. Visitors to the site would be able to rigister and post their items after getting confirmed, listing based on zip code, this would be only for the US market. Here are some of the features I would like to have on this site: 1-Admin area where I can monitor listings. 2-There will be no advertizing in the begining, so all revenue will be coming from people posting on the site. 3-Users area where they can answer questions posted on their listing. 4-Logo design 5-SEO ready 6-Tracking system. I look forward for any other input.