The "Community Unit Plan" is for mixed uses in that it allows all types of residential uses plus any uses directly related to residential uses such as churches, schools, day care facilities, parks, playgrounds, recreational faculties, etc. There are few regulations, only guidelines making it possible for a creative developer to bring in a plan for a 'community' or a neighborhood. Cluster development could also be incorporated into this zone.
The Planned Residential district is for multi-family development only and is regulated in order to maintain a suitable development that buffers between commercial and single-family residential uses. Cluster development for multi-family dwellings is encouraged.