Accra is a centre for manufacturing, marketing, finance, insurance, and transportation. Its financial sector incorporates a central bank, nine commercial banks (with 81 branches), four development banks (with 19 branches), four merchant banks (with seven branches), three discount houses, one home finance mortgage bank, multiple building societies, Ghana Stock Exchange, foreign exchange bureaus, finance houses, insurance companies, insurance brokerage firms, two savings and loans companies, and numerous real estate developers, with industrial sites and residential developments. The road network in the Accra Metropolitan Area totals in length.