1. Cluster housing is designed to encourage a unitary site development plan for dense single-family and multi-family residential development. The concept of cluster housing involves small minimum lot sizes on tracts of land developed as single entities for residential purposes. The cluster housing regulations specifically encourage innovation so that the growing demands for housing may be met by greater variety in type, design and setting of dwellings and by the conservation and more efficient use of land. The principal use of this district is for cluster housing.
2. The residential cluster housing district is to provide controlled development of closely spaced, residential buildings with individual design characteristics and appearances, flexibility in design and more variety in residential development.
3. The residential cluster housing district shall be used to promote development when one of the following property conditions exist on a portion of that property:
a. Marginal environmental area, i.e., officially designated floodplains, excessive slopes, subsidence areas and other areas deemed environmentally marginal;
b. Transition area. Where a demonstrated need exists to separate single-family dwellings from commercial establishments; or
c. Other area. The planning commission may designate and approve other areas as residential cluster housing districts subject to the final approval of the city council and consistent with good zoning and planning practices.
4. This district will provide more efficient allocation of parks, recreation areas and open space. In order to encourage more attractive site planning and building appearances, the controls provided for in the site plan requirements and subdivision requirements are flexible in nature. All structures within this district shall meet the minimum firewall regulations set forth in adopted city building and fire codes.
B. District Defined: A "cluster housing project" is one in which each dwelling unit is owned separately and in which dwelling units are in detached structures or in multiplexes accommodating no more than four (4) attached dwelling units.
C. Uses Permitted: Residential cluster housing shall be used for the following purposes: (2001 Code § 154.030)
Accessory buildings and uses customarily incidental to the permitted uses.
Off street parking necessary and incidental to residential occupancy of the property.
Private swimming pool, tennis court and other similar facilities in conjunction with the residence. (2001 Code § 154.030; amd. 2012 Code)
1. Marginal Environmental Area:
a. Cluster housing "CH" projects shall be located on property which is partially within a marginal environmental area. Such marginal environmental areas will include:
(1) Officially designated floodplains;
(3) Subsidence areas; and
(4) Other areas deemed environmentally marginal.
b. Residential cluster housing projects shall utilize that portion of the property defined as an environmental marginal area as common, open or green space for recreational purposes only. No dwellings, accessory buildings, streets or development of any type other than recreational purposes shall be allowed within the boundary of the environmental marginal area. All environmental marginal areas will be plainly delineated on the development plans and preliminary plat for residential cluster housing projects.
2. Transition Area: Residential cluster housing projects shall be located on property which separates residential districts from commercial districts. A demonstrated need must exist for such a residential cluster housing separation between a single-family residential district and a commercial district. It shall be the responsibility of the developer to demonstrate such a need for the separation; and
3. Other Area: Cluster housing "CH" projects shall be located on property considered appropriate by the planning commission and consistent with good zoning and planning practices. Final approval shall be subject to the city commission.
E. Area Regulations: Area regulations are as follows:
1. Site Size: The residential cluster housing residential dwelling districts shall not be allowed on tracts of land less than five (5) contiguous acres.
2. Intensity Of Use: In no case shall there be more than eight (8) dwelling units per acre.
3. Coverage: Main and accessory buildings shall not cover more than ninety percent (90%) of each lot of the cluster housing development. Twenty five percent (25%) of a residential cluster housing development's acreage shall be dedicated to open space, common areas or green areas suitable for recreational use with maintenance and operation provided by the property owners' association.
4. Lot Size: Lots shall have a minimum width of forty feet (40') at the building line. A minimum of two thousand (2,000) square feet shall be within each lot.
a. Front Yard: All buildings shall be set back from the street right of way line a minimum of ten feet (10').
(1) There shall be a minimum of ten feet (10') between each single-story dwelling structure. Two-story dwelling structures shall require a minimum of fifteen feet (15') between dwelling structures. All allowed multiplex structures shall provide sidewalls which are fireproof and meet or exceed the city building and fire codes.
(2) On any corner lot, a building shall be set back a minimum distance of ten feet (10') from both street right of way lines.
(3) When a lot abuts another dwelling district, the building on such lot shall have a side yard setback minimum of ten feet (10') from the side property line abutting the zone.
(1) There shall be a rear yard setback of not less than fifteen feet (15'), whether privately owned or designated as common area; and
(2) Where a rear lot line abuts another dwelling district, there shall be rear yard setback of not less than fifteen feet (15') from the rear lot line abutting the zone.
F. Height Regulations: No building shall exceed two and one- half (21/2) stories or thirty five feet (35') in height.
G. Fire Regulations: All cluster housing shall meet the minimum firewall regulations and requirements set forth in the current adopted city building and fire codes. The placement and construction of firewalls shall first be approved by the fire marshal and the building inspector. No wooden shingles shall be allowed in residential cluster housing developments.
H. Open Space, Common Areas Or Green Areas: Twenty five percent (25%) of a residential cluster housing development's acreage shall be dedicated to open space, common areas or green areas suitable for recreational use with maintenance and operation provided by the property owners' association. Land under private group or unit ownership (property owners' association) shall be used for open recreation space in this district when designated as open space, common area or green area on a plat, provided:
1. The agreements, provisions or covenants which govern the use, maintenance and continued protection of the space are submitted for approval with the final plat; and
2. Upon approval of the final plat, there shall be an easement recorded in the county clerk's office, running with the land to the unit, or group responsible for the area, limiting uses of such space to an open area without buildings or structures for which a building permit is required and which easement shall not be revoked without consent of the city commission.
I. Private Streets: Commonly owned streets, herein referred to as "private streets", shall be constructed pursuant to the regulations of chapter 153 of this title, however, said streets within this district are allowed to have a forty foot (40') street right of way.
J. Building Inspector Conference:
1. The landowner/developer shall confer with the building inspector no later than thirty (30) days prior to the date of the metropolitan area planning commission meeting in which the development is to be considered.
2. The subject of the conference shall be for the purpose of informing the building inspector of the development concept and to familiarize the owner/developer with the residential cluster housing development process before entering into binding contracts or incurring substantial expense in the preparation of plans.
3. At this conference, a concept plan shall be required. The concept plan shall show:
a. The applicant's entire legal ownership;
b. The location of the proposed roadway system, including all rights of way;
c. The general location of proposed storm sewers and drainage easements, to include floodplain information;
d. The location of any land intended for public or semipublic purposes;
e. The general location and type of residential dwelling units;
f. A proposed treatment of the perimeter of the development; and
g. The location of the marginal environmental area, if any, and its relationship to the project.
4. In addition to the concept plan, a tabular summary of the following is required:
a. The relative percentage of each proposed dwelling unit type and a total of the square footage proposed for floor area and coverage;
b. A calculation of the residential density in terms of dwelling units per gross acre (including interior roadways); and
c. In the administration of the regulations, the term density refers to the gross density of the tract unless otherwise indicated. The gross density refers to the number of dwelling units per unit of land (acre) and refers to all land under the ownership of the applicant.
5. No later than two (2) weeks after the preapplication conference, the building inspector will submit written comments to the applicant concerning the development of the subject tract. The comments will be confined to the general conceptual merit of the proposal and will in no way commit any further acceptance or rejection of the detailed design elements required in the later site plan review stage.
1. The formal submittal shall occur as a request for a cluster housing development and shall be accomplished by all the normal requirements of a rezoning application. Also, a site development plan with supporting maps and written documents shall accompany the rezoning request.
2. The plan of development shall consist of the following maps drawn to a scale of not less than one hundred feet equal to one inch (1" = 100'), which shows topographic characteristics of the site at a contour interval of not more than two feet (2') and written documents as follows:
a. A map of existing site conditions including watercourses, floodplains, existing buildings and structures, and existing vegetation.
b. A site development plan which shows the location and dimensions of proposed buildings, yards, courts, landscaping, pedestrian and vehicular circulation and parking, fences and screening; service areas and service courts; the use of each building and area; and the height of buildings.
c. A site development plan which shows the location of the marginal environmental area, if any, and its relationship to the project.
d. A general landscaping plan that indicates materials to be used for open space areas and to be used along the perimeter of the development. Other treatment of the perimeter, such as walls and fences should be shown on this map.
e. The following quantitative data shall be provided:
(1) The total number and type of dwelling units;
(2) The size of each lot;
(3) The floor area and coverage of each building; and
(4) The total amount of open space provided.
3. A preliminary plat shall accompany the rezoning request. The preliminary plat shall conform to these regulations and the city subdivision regulations as they apply and shall be presented separate from the required site development plan and supporting maps.
4. Upon submittal of a proper application and preliminary plat, the request for rezoning shall be considered by the metropolitan area planning commission, which shall recommend adoption or rejection of the proposal. The planning commission's recommendation for adoption may include desirable revisions to be incorporated in the site development plan, with which conformance with shall be considered a condition of approval. Such recommendations shall be limited to siting and dimensional details within general use areas. Significant alterations to the site development plan, as condition for approval, shall be resubmitted at the next meeting of the planning commission.
1. A final plat must be submitted within twelve (12) months of the approved date of the rezoning. The preliminary plat and approved site development plan for cluster housing development shall become null and void after twelve (12) months if no final plat is submitted.
2. The final plat shall be in substantial compliance with the approved site development plan. The plat shall not be deemed in substantial compliance so long as one or more of the following changes are involved:
a. Vary any lot area as indicated on the preliminary plat by more than ten percent (10%);
b. Increase the area covered by buildings on any lot as depicted by the site development plan by more than five percent (5%);
c. Realign any street, pedestrianway or bicycle path; or
d. Change the location of any building or structure by more than ten feet (10') in any direction.
3. The contents of the final plat shall conform to requirements of section
153.56 of this title.
4. Each individual lot and block contained in the filed final plat of a cluster housing development shall be subject to the provisions of the approved site development plan regarding the specific allowed coverage and floor area. Whenever the ownership of individual development parcels is transferred, the legal public restrictions of the site development plan pertaining to the development parcels shall be included as a part of the private covenants.
5. The planning commission shall act upon the final plat within forty five (45) days after it has been submitted for final approval. This approval and the date thereof shall be shown on the plat over the signature of the planning commission chairperson or secretary member. Unless stipulation for additional time is agreed to by the subdivider, and if no action is taken by the planning commission at the end of forty five (45) days after submission, the plat shall be deemed to have been approved. If the final plat is disapproved, grounds for this refusal shall be stated in writing, a copy of which shall be transmitted with the tracing and prints to the applicant. The reasons for disapproval shall refer specifically to those parts of the general plan or ordinance or regulation with which the plat does not comply.
6. Before recording the final plat, the plat and the request for rezoning shall be submitted to the city commission for approval and for acceptance of public streets, alleys and utility easements, and land dedicated to public use. This approval of the plat shall be shown over the signature of the mayor and properly attested. The disapproval of any plat or plan by the city commission shall be deemed a refusal of the proposed dedications shown thereon.
7. After final approval of the plat and the affixing of all required signatures on the original tracing, the subdivider shall provide the planning commission with two (2) dark line prints thereof, and one contact reproducible cloth tracing. The applicant shall file the original tracing, one dark line print on cloth, and one contact reproducible tracing on cloth or film with the county clerk. (2001 Code § 154.030)