Local authority members on the Isle of Man are typically called Commissioners, the exception being those for Douglas Corporation who are called Councillors. There are 24 Local Authorities on the Isle of Man with Douglas Corporation being the largest. They provide a range of community services including civic amenity site provision, libraries, parks, street lighting and refuse collection. A number also administer public sector housing although this provision is limited. All local Authorities charge for these services through a system of rates usually calculated on the rateable value of your property.