Almost all low-income areas are built up with little room for expansion. This is particularly so in the areas of the inner city. The middle-income areas of Accra are predominantly populated by Ghanaian citizens and business, administrative and professional families. Much of the housing in these areas has been provided by state, parastatal and private sector organisations and individuals. The middle-income areas include Dansoman Estates, North Kaneshie Estates, Asylum Down, Kanda Estates, Abelempke, Achimota, Adenta and Tesano. Usually, these areas, unlike the low-income areas, are planned developments, but are in need of infrastructure services. Building materials and general housing conditions are of better quality. The middle-income group comprises 32% of the city's population of which are Ghanaian citizens make up. The high-income areas provide housing for the remaining 10% of the population of which Ghanaian citizens also make up. They include areas like North Ridge and West Ridge, Ringway Estates, north Labone Estates, Airport Residential Area, Roman Ridge, East Legon.