10-17-5: BULK, OPEN SPACE, PARKING, AND DESIGN REQUIREMENTS IN PLANNED RESIDENTIAL DEVELOPMENTS:
All developments in a PRD are subject to the zoning requirements applicable in the underlying zoning district of the property, unless such requirements directly conflict with the requirements of this Section, in which case the requirements of this Section shall control to the extent of the conflict.
A.   Maximum Density: The maximum number of dwelling units in a PRD is determined by the total size of the proposed development (in acres) multiplied by the district-specific standards listed below, rounded to the nearest whole number, except as may be modified in accordance with Section 10-17-8. The number of units of each dwelling type shall be subject to approval by the Village Board based on a recommendation of the PCZBA and satisfaction of the standards for Special Uses and PRDs.
TABLE 10-17-5.A
Zoning District
Dwelling Units Per Acre
TABLE 10-17-5.A
Zoning District
Dwelling Units Per Acre
C-E
0.22
E-1
0.67
E-2
1.00
R-1
2.18
R-2
3.63
R-3
4.58
R-4
5.80
R-5
5.80 for single-family residences;
21.78 for all other types of residences.
(R-5 acreage will first be applied to all other types of residences at the higher rate, and then any remaining land will be applied to single-family residences at the lower rate.)
 
B.   Maximum Height: The maximum height of a principal structure in a PRD shall be as follows, except as may be modified in accordance with Section 10-17-8:
 
TABLE 10-17-5.B
Zoning District
Maximum Height
C-E
40 feet
E-1, E-2
36 feet
R-1, R-2
34 feet
R-3, R-4, R-5
32 feet
 
C.   Open Space and Setbacks:
1.   Perimeter Open Space: An unobstructed yard setback of no less than least 30 feet in depth shall be provided along the perimeter of the PRD, provided that perimeter open space may be reduced or waived by the Village where it does not provide additional or necessary screening or impedes integrating the PRD into adjacent developments. The PRD must provide for ownership and maintenance of the perimeter open space by an owners’ association or equivalent entity.
2.   Other Than Conventional Lot Design: Where principal dwellings are owned in condominium or are otherwise surrounded by common areas around individual dwelling units or buildings (e.g. rather than conventional lots):
a.   All buildings must be located a minimum of 15 feet from other buildings and structures.
b.   The PRD must address if, and under what circumstances, accessory uses and structures may be maintained such as fences, patios, decks, driveways, walkways, and sheds.
3.   Clustering: Clustering of homes is not required, but may be applied as a design option to, among other things, establish a particular type of neighborhood layout; define common open space; preserve environmental areas; create a unique site character; or otherwise incorporate unique site opportunities. When applied, clustering of homes should:
a.   Avoid inefficient design or roadways or utilities that will unduly increase maintenance and replacement costs;
b.   Maximize connectivity throughout the development and to adjacent areas for those traveling by foot, bicycle, or vehicle;
c.   Avoid impacting environmentally sensitive or significant areas;
d.   Not cause adverse impacts between incompatible uses; and
e.   Not otherwise create adverse impacts.
4.   Common Open Space: PRDs shall include Common Open Space that meets all of the following requirements:
a.   At least 15 percent of the PRD’s site area shall be reserved as Common Open Space.
b.   The Common Open Space shall be owned and maintained by an owners’ association or equivalent entity.
c.   Except as authorized by the Village Board, Common Open Space intended to be accessible and used by residents of the PRD must also be accessible and usable by the public on similar or equal terms.
d.   The Common Open Space shall be maintained with grass, native plantings, ground covers, trees and shrubs except for those areas occupied by recreational structures or pathways for pedestrians and bicyclists (paved, gravel, or other approved materials).
5.   Preserving Environmental Areas: No development shall take place on existing environmental areas. For the purposes of this Chapter, Environmental Areas shall be defined as lakes, ponds, and streams; established tree stands, or savannahs. Preserved environmental areas may be counted toward the required Common Open Space.
D.   Anti-monotony: PRDs shall be planned and constructed so as to avoid monotonous design, particularly with regard to single-family dwellings. Single-family dwellings located on the same block or otherwise generally near one another shall be designed and constructed to avoid monotony with respect to roof line, windows, construction materials, color, location and size of doors, garage orientation, and style of principal entry, and location and orientation of garage entries. This requirement is not applicable to developments specifically designed to establish a unified design format for the development.
E.   Connectivity: PRDs shall be designed to facilitate safe and efficient connectivity internally, as well to the adjacent road system and the Village generally for all modes of transportation.
F.   Parking: In considering parking requirements for a PRD, the PCZBA may recommend, and the Village Board may require, more visitor parking than may otherwise be required by other sections of the Village Code. Visitor parking shall be in clusters and dispersed throughout the PRD so as to serve the entire development. (Ord. 2022-30, 10-24-2022)