Startup Idea : Geographic search of historical projects

When quoting for new jobs and starting work on new jobs, at my company and a company I used to work for (environmental consulting) it has been common that we are not aware of previous historical projects (our division and other divisions) located in the same geographic area. If historical projects could be searched this would ensure that companies have access to previous projects nearby which may allow them to gain access to data that would save considerable time or prevent embarassing situations where people are unaware of previous work at a site from the same division or another division. This could be sold to many environmental firms and probably other similar firms.