To counter the gentrification of their mixed-populace communities, there are cases where residents formally organized themselves to develop the necessary socio-political strategies required to retain local affordable housing. The gentrification of a mixed-income community raises housing affordability to the fore of the community's politics. There are cities, municipalities, and counties which have countered gentrification with inclusionary zoning (inclusionary housing) ordinances requiring the apportionment of some new housing for the community's original low- and moderate-income residents. Inclusionary zoning is a new social concept in English speaking countries; there are few reports qualifying its effective or ineffective limitation of gentrification in the English literature. The basis of inclusionary zoning is partial replacement as opposed to displacement of the embedded communities.