Planned unit development zoning is also termed

Buffer zoning refers to the practice of creating transitional areas between different land uses, such as residential and industrial zones, to reduce conflicts and enhance compatibility. This concept is distinct from PUDs, as it focuses primarily on mitigating impacts rather than integrating diverse land uses in a unified development plan.

Downzoning is the process of changing the zoning classification of land to allow for less dense or less intensive use, often to preserve the character of a neighborhood or reduce development potential. This term does not apply to PUDs, which aim to increase density and diversity of land use, rather than restrict it.

Exclusionary zoning refers to regulations that restrict certain types of development, often to prevent lower-income housing from being built in a community. This is contrary to the goals of planned unit development, which seeks to promote inclusivity and a variety of housing types within a planned area.