Need a system like an add on developing

I need a system or a plugin of sort developing. Naturally I will need to discuss this with teh right individual or team. But heres what it is: Please see this: [login to view URL] Its a store locator. I need something similar to be developed, so that it can used as an add on to a site, then the user can customize it to their preference. The link above is for a bank so u can locate any branch when u input part of your post code. I will give the exact details to the winning team. I would prefer a team due to time-scale. should be able to use it for any type of site. Can be customized to stores, branches etc Has to be optimized Google maps must be integrated. and a few other points.. need to be discussed. A non-disclosure will be signed. On going work available for the selected. PLEASE PROVIDE OTHER SYSTEMS ETC U HAVE BUILT