Registered Community Organizations, or RCOs, regularly have a say on zoning issues in Philadelphia communities. For example, if a person wants to open a business in a neighborhood, then the business owner is supposed to contact all of the interested RCOs, which can then support or oppose the zoning proposal at the zoning hearing.
It's not uncommon for a city zoning code to require certain kinds of businesses to obtain a zoning variance before setting up shop. Business groups can oppose the implementation of such requirements, but when they're in place, a business owner or developer may have to appear before a zoning board to seek rezoning or a variance. It is a good idea, then, to have a real estate attorney on your side.