Cluster residential development is a conditional use permitted and encouraged in the Rural Development Zoning District. Residential development designed to meet the cluster development standards is intended to preserve the beauty, utility and character of the Balsam Lake area, which is defined by its open spaces, farmland, natural resources and topographic patterns. A successful recipient of a CUP allowing cluster development may be allowed to modify the lot size, setback and yard requirements of the Rural Development District. Limitations to these modifications are described below. All other district requirements shall be complied with as well as any fire, building or electrical codes and applicable subdivision regulations.
A. Cluster development is encouraged in the Rural Development District because it:
(3) Protects wildlife habitats.
(4) Retains natural vegetative buffers around water bodies or wetlands and along watercourses.
(5) Preserves historic sites.
(6) Provides recreational areas within preserved natural areas.
(7) Provides effective pedestrian circulation, including trail systems.
(8) Ensures that the common land abuts protected open space on adjoining parcels, where it exists.
B. Submission and procedural requirements for consideration of a cluster development are found in §
300-31. Any additional submission and procedural requirements are outlined below.
(1) Green space requirements. No less than 70% of each individual parcel should be maintained in green space.
(2) Impervious surface requirements. No more than 30% of each individual parcel within the cluster development may be an impervious surface. Impervious surfaces include paved areas, the footprints of both primary and accessory buildings and driveways.
(3) Density requirements.
(a) One-family dwelling units and duplexes are allowed in cluster residential developments within the Rural Development District. A maximum density of three dwelling units per acre is allowed on any individual parcel within the cluster development. The cluster subdivision must consist of at least four acres unless the cluster development is found by the Planning Commission to be a logical extension of an existing or approved cluster development, in which case fewer dwelling units and acreage may be considered.
(b) The density requirement for conventional, unsewered lot development (0.5 dwelling unit per acre) applies in determining the number of dwelling units allowed in a cluster residential development. To encourage the preservation of open space as a result of clustered, open space residential development, the Village will allow a twenty-percent density bonus if the developer meets or exceeds the cluster development standards:
| Example: | 9 acres in total Allowable density = 0.5 du/acre 9 x 0.5 = 4 allowed du 4 x 20% = 0.8 = 1 bonus du Total du = 5 du |
| Example: | 50 acres Allowable density = 0.5 du/acre 50 x 0.5 = 25 allowed du 25 x 25% = 5 bonus du Total du = 30 du |
(4) Yard and lot requirements. The following guidelines apply:
| Lots | Yard Setbacks (feet) | |
|---|
Rural Development (RD) | Width (feet) | Area | Front Minimum | Rear Minimum | Side Minimum | Height (feet) |
|---|
Clustered, open space development | 70 to 150 | 1/2 acre to 1 acre | 15 | 30 | 10 | 35 maximum |
Lots not served by public sewer | | | | | | |
(5) Minimum percentage of open space. The minimum percentage of land that shall be designated as permanent open space, not to be further subdivided, and protected through conservation easement held by a recognized land trust or conservancy is as follows:
(a) A minimum of 50% of the total tract area, after the following kinds of unbuildable land have been set aside:
[1] Wetlands and land that is generally inundated.
[2] All floodway and flood fringe within the one-hundred-year floodplain as indicated on FEMA maps.
[3] Land with slopes exceeding 25% or soils subject to slumping.
[4] Land required for street rights-of-way.
[5] Land under permanent easement prohibiting future development.
(b) All lands dedicated to permanent open space are restricted from further subdivision and development through a permanent conservation easement, in a form acceptable to the Village and duly recorded in the County Register of Deeds office.
(c) At least 25% of the minimum required open space must be suitable for active recreation purposes, but no more than 50% should be utilized for that purpose. The purposes for which open space areas are proposed must be documented by the applicant.
(6) Location of open space. The location of open space conserved through compact residential development should be consistent with the policies contained in the Open Space, Recreation and Environmental Resources Element of the Village Comprehensive Plan and its Proposed Land Use Plan.
(7) Ownership of open space.
(a) Public ownership. Cluster open space should be made available for the use of all residents of the public unless the Planning Commission finds that the size, location, type of development, or cost of development or maintenance of such open space would make public use undesirable or unnecessary.
(b) Private ownership. If cluster open space is not dedicated to public use, it must be protected by legal arrangements satisfactory to the Planning Commission and sufficient to ensure its maintenance and preservation. Covenants or other legal arrangements must specify:
[1] Ownership of the cluster open space.
[3] Responsibility for maintenance.
[4] Maintenance taxes and insurance.
[5] Compulsory membership and compulsory assessment provision.
[6] Guarantees that any association formed to own and maintain cluster open space will not be dissolved without the consent of the Planning Commission.
[7] Any other specification deemed necessary by the Commission.
(8) Evaluation criteria. An approved plan for a clustered development must provide for a total environment better than that which could be achieved under standard regulations. If, in the opinion of the Planning Commission, the proposed plan could be improved in respect to the criteria listed below, the plan must be modified or denied. In responding to a proposed plan, the Planning Commission will give particular consideration to the following criteria:
(a) Individual lots, buildings, streets, and parking areas must be designed and situated to minimize alteration of the natural site features to be preserved.
(b) The usability of cluster open space intended for recreation or public use must be determined by the size, shape, topographic and location requirements of the purpose proposed for the site.
(c) Cluster open space shall include irreplaceable natural features located in the tract (such as, but not limited to, streambeds, significant stands of trees, wetlands, individual trees of significant size, and rock outcroppings).
(d) Cluster open space intended for recreational or public use must be easily accessible to pedestrians.
(e) The suitability of cluster open space intended for scenic value and purposes must be determined by its visibility from a significant number of buildings or length of public or private streets.
(f) Diversity and originality in lot layout and individual building design must be encouraged to achieve the best possible relationship between development and the land.
(g) Individual lots, buildings, and units shall be arranged and situated to relate to surrounding properties to improve the view from and the view of buildings and to lessen area devoted to motor vehicle access.
(9) Approval for cluster development. No cluster development can be constructed except in accord with the final site plan approved by the Village Board following the process described in §
300-31.