Cluster development shall mean a subdivision plat or plats, approved pursuant to this chapter, in which the subdivision of land is modified to provide an alternative permitted method for the layout, configuration and design of lots, buildings and structures, roads, utility lines and other infrastructure, parks and landscaping, in order to enhance the natural and scenic qualities of open lands. Private roads to service clustered lots may be approved as part of the final plat, and lots along such private roads may be platted as legal lots. Such private roads must provide adequate access to existing public roads.
The applicant shall comply with the provisions of this chapter for the proposed subdivision of land involving cluster development. Cluster development in the Town of Aurora shall require the final approval of the Town Board in accordance with this chapter. Approval will be granted when the Town Board has determined that it will achieve the intent of these regulations. The Town Board, at its discretion, may direct an applicant to pursue cluster development if, in the judgment of the Town, its application will benefit the Town.
A. 
A cluster development in the subdivision of land shall result in a permitted number of building lots or dwelling units which shall in no case exceed the number which could be permitted if the land were subdivided into two acre lots.
B. 
However, prior to determining the number of dwelling units and/or building lots, the parcel to be developed shall be adjusted as follows:
(1) 
Lands utilized by public utilities or structures or recorded easements of right-of-way shall be subtracted from the total gross area.
(2) 
Water bodies, marsh areas, designated wetlands, woodlands, gorges, rock outcroppings, caverns, poorly drained, unstable soils and floodplains shall be subtracted from the total gross area.
C. 
The adjusted gross area of the parcel shall then be used to compute maximum number of dwelling units and/or building lots permitted.
D. 
Overall, the minimum amount of open space preservation shall be no less than 50% of the gross acreage of the parcel or parcels to be developed.
The plat plan showing such cluster development shall include areas within which structures may be located, the height and spacing of buildings, open spaces and their landscaping, off-street open and enclosed parking spaces, streets, driveways and any other features required of the codes of the Town. In the case of a residential plat or plats, the dwelling units permitted may be, at the discretion of the Town Board, detached, semidetached, attached or multistory structures.
The approval of subdivision plats with cluster development shall be in accordance with all applicable provisions of this chapter.
The minimum parcel size to be considered for cluster development shall be 15 acres.
All cluster development shall be served by a system of public utilities, including the water supply systems and central sewage systems, within an existing or planned municipal system.
A. 
Minimum lot size. The minimum lot size may be reduced to no less than 7,200 square feet, provided that any and all such area that is not designated to serve as residential areas, roads or other public purposes be set aside and restricted on the subdivision plat for use by inhabitants as common open space, parkland or recreational purposes of an active or passive nature. When the required minimum lot area has been reduced in accordance with this article, the following yard requirements will be a minimum:
(1) 
Front yard setback: 40 feet from the boundary of the right-of-way.
(2) 
The minimum width of any side yard shall be five feet.
(3) 
The total width of both side yards shall not be less than 13 feet.
(4) 
Rear yard setback: 20 feet.
(5) 
Minimum lot width: 60 feet.
B. 
Minimum habitable floor area. The required minimum habitable floor area shall be the minimum floor area of dwellings determined by Chapter 116, Zoning. The maximum mean height of buildings shall not exceed two stories or 35 feet.
C. 
Maintenance of common area.
(1) 
Nothing herein shall prevent the Town Board from requiring that 10% or more of the entire subdivision be set aside for park and recreational purposes as common area, which area shall be separate and distinct from any lots within the subdivision intended for dwellings. Such areas shall not include the area or areas which are set aside for detention ponds.
(2) 
Provisions, satisfactory in the sole discretion of the Town Board, shall be made to assure the proper maintenance of all nonpublic areas and facilities for the common use of occupants of any cluster housing development of any type without expense to the general taxpayers of the Town of Aurora. The instrument incorporating provisions for the proper maintenance of all nonpublic areas and facilities for the common use of occupants of any cluster development shall be approved by the Town Attorney of the Town of Aurora as to form and legal sufficiency before any approval action is taken by the Town Board.
D. 
Parking, roads, yards, screening and buffering. In consideration of the site plan for cluster development, the Town Board shall consider the following criteria:
(1) 
Yard requirements and proposed screening of parking and active recreation areas from adjacent property lines.
(2) 
Sufficient off-street parking: a minimum of two car spaces per unit, not including garage space. Community parking areas may be required by the Town Board during subdivision review.
(3) 
Buffer and screening areas, which shall be landscaped, left in their natural state, or provided with additional evergreen foliage. Natural features such as streams, rock outcrops, marshlands, trees and shrubs shall be preserved and incorporated into the landscaping of the development. In addition, open vistas visible from existing public roads shall be preserved.
(4) 
Surface water retention facilities shall be developed where required in order that the rate of stormwater runoff after construction is no greater than the rate of runoff prior to construction.
(5) 
On-site lighting shall be directed downward and shall not reflect on adjacent properties.
(6) 
Private roads shall be built to minimum standards approved by the Town Board and provided by the Town Engineer.
(7) 
Nothing herein shall prevent the Town Board from requiring walkways, sidewalks and/or trails to be developed in the cluster development or for connectivity to surrounding areas.
(8) 
Other conditions that the Town Board in its sole discretion determines to be appropriate for the specific development.
E. 
Variances and modifications.
(1) 
Where the Town Board finds that, because of unusual circumstances of shape, topography or other physical features of the land or because of the nature of the adjacent developments, extraordinary hardships may result from the strict compliance with these regulations, it may vary the regulations so that substantial justice may be done and the public interest secured, provided that no such variation shall be granted that will have the effect of nullifying the intent and the purpose of any Comprehensive Plan; Chapter 116, Zoning; or any other law or ordinance of the Town of Aurora.
(2) 
In granting variances and modifications, the Town Board may require such conditions as will, in its judgment, secure substantially the objectives of the standards or requirements so varied or modified.