The City of Chicago Department of Buildings has a vast array of responsibilities from building inspections to collecting permit fees. It also supports the Chicago Green Homes Program, which "encourages residential builders, developers and homeowners to use Green technologies, products and practices."

It is also involved in Green Permit Progam, an expedited permit process for projects that incorporate innovative green building strategies. The Dept. of Buildings also offers information regarding green urban design and a listing of green resources.