Exclusionary zoning is the use of zoning ordinances to exclude certain types of land uses from a given community. As of the 2010s, exclusionary zoning ordinances are standard in almost all communities. Exclusionary zoning was introduced in the early 1900s, typically to prevent racial and ethnic minorities from moving into middle- and upper-class neighborhoods. Municipalities use zoning to limit the supply of available housing units, such as by prohibiting multi-family residential dwellings or setting minimum lot size requirements. These ordinances raise costs, making it less likely that lower-income groups will move in. Development fees for variance (land use), a building permit, a certificate of occupancy, a filing (legal) cost, special permits and planned-unit development applications fo