Clustering lots allows planners to house a growing population economically. But the savings can be lost through the time-consuming review procedures that are part of the PUD process. Most communities now allow cluster developments, but view them as exceptions that must have a more rigorous review than their conventional brethern. This illustrated report examines cost-effective alternative regulatory techniques that permit cluster site design as a use-by-right or under special permit. The author outlines criteria that the reviewers of a cluster development project should consider when reviewing a project. Cluster Subdivision also presents examples of zoning ordinance provisions for cluster developments from several localities, as well as drafting procedures for communities wishing to implement cluster development.