Article A: Planned Unit Developments In The Residential (R) Zone:
1. The minimum site for a planned unit development shall be three (3) acres for exclusively residential development, and five (5) acres for developments combining accessory uses with residential use.
2. The site shall abut a dedicated public street, and the main street serving the planned unit development shall be connected to at least one arterial or collector street as defined in the city's comprehensive plan.
B. Minimum Lot Size: The minimum lot size provisions of the residential (R) zone are waived in a planned unit development, except that such minimum lot size provisions shall serve as the criterion to determine planned unit development densities.
C. Setback Requirements: Setbacks from front or flanking streets, and interior or rear property lines in a planned unit development shall all be as required by the city council.
D. Off Street Parking: Off street parking shall be provided in a planned unit development in the same ratios as required for the types of uses therein as specified elsewhere in this title.
E. Platting Requirements: A planned unit development shall be exempt from the specific design requirements of the city's subdivision regulations. However, when any parcel of land in a planned unit development is intended for individual ownership, sale, or public dedication, the platting procedural requirements of the city's subdivision ordinance and applicable state laws pertaining to subdivision of land shall be followed.
1. Open Space: Open space required shall be as follows:
a. Common Open Space: Each planned unit development shall provide not less than thirty percent (30%) of the gross land area for common open space, which shall be either:
(1) Held in common ownership by all of the owners in the development area; or
(2) Dedicated for public use, if acceptable to the city.
b. Private Open Space: Private, usable open space shall be provided for each dwelling unit in a planned unit development as follows:
(1) For single-family structures, detached or attached, private open space shall be at ground level, and shall be equal to twenty percent (20%) of the site covered by the dwelling unit, except that in no case shall this open space be less than two hundred (200) square feet.
(2) For dwelling units in multiple residential structures, having no direct access to ground level, private open space shall be provided in the following amounts:
(A) For dwelling units one story above ground level, an area (balcony or deck) equal to a minimum of ten percent (10%) of the gross square footage of the dwelling unit; and
(B) For dwelling units two (2) or more stories above ground level, an area (balcony or deck) equal to a minimum of five percent (5%) of the gross square footage of the dwelling unit.
2. Land Area And Dwelling Unit Computations: Open space and street areas are computed as follows:
a. Street Right Of Way: Streets in a planned unit development shall be computed at twenty percent (20%) of the gross land area, regardless of the amount of land actually used for streets in the final design.
b. Density And Development Formula: In a planned unit development, the city council may authorize a dwelling unit density not more than twenty percent (20%) greater than that permitted by the underlying residential (R) zone; provided, that the environmental amenities sought by this chapter are met. Development areas shall be computed according to the following formula:
G Is gross land area in square feet
S Is street area (i.e., 20 percent of G) in square feet
C Is common open space (i.e., 30 percent of G) in square feet
DU Is number of dwelling units
M Is minimum lot size of underlying residential (R) zone
N Is net developable area (G minus S) in square feet
Dwelling units permitted are computed as follows:
Example of calculations for a three (3) acre site:
G (which is 130,680 square feet) minus S (which is 26,136 square feet) equals N (which is 104,544 square feet) times 1.2 (which is 125,433 square feet) divided by M (which is 14,520 square feet) equals DU (which is 8.6 dwelling units) rounded up to 9 units.
3. Maximum Site Coverage: Site coverage shall not be more than that permitted by the underlying residential (R) zone (i.e., 50 percent) based on conventional subdivision design.
4. Landscaping Required: All common open space shall be landscaped in accordance with the landscaping and irrigation plan submitted by the applicant and approved by the city council. Such landscaping shall be maintained by the homeowners' association, and shall be subject to periodic inspection by the city. In the event that such landscaping and irrigation is not maintained in a reasonable manner, the city shall have the right to provide for the maintenance thereof and bill the homeowners' association accordingly. If unpaid, such bill shall become a lien against the homeowners' association.
5. Relationship To Adjacent Areas: The design of a planned unit development shall take into account the relationship of the site to the surrounding areas. The perimeter of the planned unit development shall be so designed as to minimize undesirable impact of the planned unit development on adjacent properties and, conversely, to minimize undesirable impact of adjacent land use and development characteristics upon the planned unit development.
6. Setback Requirements: Setbacks from the property lines of the planned unit development shall be comparable to or compatible with those of the existing development of adjacent properties or, if adjacent properties are undeveloped, the type of development which may reasonably be expected on such properties given the existing zoning on such properties or the projections of the comprehensive plan. In no event shall such perimeter property line setback be less than ten feet (10').
7. Streets: All public streets within or adjacent to a planned unit development shall meet city standards in force at the time of application.
Article B: Planned Unit Developments In The Commercial (C) Zone:
A. Relation To Subdivision Application: A residential Planned Unit Development (PUD) in the commercial (C) zone may be processed concurrently with a subdivision request for the same property, or may be processed as a stand-alone PUD when no subdivision of the property is required.
B. Site Acreage Minimum: The minimum site area for a residential PUD in the commercial zone shall be three (3) acres.
C. Wastewater Treatment: All residential PUDs in the commercial zone shall require municipal-type wastewater treatment for the development. No residential PUDs in the commercial zone will be allowed on septic tank and drainfield type wastewater systems.
D. Density: The maximum number of residential units allowed within the PUD shall be eight (8) units per gross acre of the parcel. If the PUD includes commercial uses, the area dedicated to commercial use shall not be included in the gross acreage when determining the allowable number of residential units.
E. Mixed Uses: The PUD may contain uses allowed in either the residential (R) or commercial (C) zone. All proposed uses must be clearly shown on the PUD plan and addressed in the project narrative.
F. Configuration: Residential uses may be in any form of single-family residence, two-family residence (duplex), or multi-family residence that is acceptable to the city council. The configuration of the residential units must be clearly shown on the PUD plan and addressed in the project narrative.
G. Access Roads: Privately maintained roads may be allowed for access to and within the PUD. The minimum road width shall be twenty (20) feet of improved width with no on-street parking allowed. The horizontal road geometry shall be evaluated as part of the PUD approval. In all other respects, roads shall be designed to meet the most current version of the Highway Standards for the Associated Highway Districts of Kootenai County, Idaho.
H. Road Frontage And Lot Width: Each residential lot shall have a minimum of thirty (30) feet of road frontage and shall not be narrower than thirty-five (35) feet at any point through the building envelope of the lot.
I. Yard Requirements And Building Separation: Yard requirements for the development shall be clearly delineated in the PUD application, either on the PUD plan or in the project narrative. At a minimum, all residential structures shall have a minimum front yard of fifteen (15) feet, a minimum side yard of five (5) feet, and a minimum rear yard of ten (10) feet. Separate buildings on the same parcel must be separated by at least five (5) feet. Zero lot line housing types may be allowed if specifically identified and approved in the PUD approval process.
J. Lot Coverage: Residential lots shall have a maximum lot coverage of seventy percent (70%). Commercial lots shall have a maximum lot coverage of eighty percent (80%).
K. Parking: Parking for commercial uses shall be as required in Title 8, Chapter 12. Residential lots shall have a minimum of two (2) off-street parking spaces per dwelling unit, unless the PUD provides for on-street parking. In such cases, off-street parking may be reduced to one (1) space per dwelling unit. Parking spaces shall be configured to prevent blocking of sidewalks.
L. Open Space: Each PUD shall provide not less than ten percent (10%) of the gross land area for common open space, which shall be either held in common ownership by all of the owners in the development area, or dedicated to the city for public use, if the city chooses to accept it.
M. Sidewalks: Sidewalks shall be required to guide pedestrian traffic through the PUD and to any PUD amenities. Sidewalks may be limited to one side of a private street. Sidewalk layout shall be subject to approval of the Administrator as part of construction drawing approval.
N. Platting Requirements: A Planned Unit Development shall be exempt from the specific design requirements of the city's subdivision regulations. However, when any parcel of land in a Planned Unit Development is intended for individual ownership, sale, or public dedication, the platting procedural requirements of the city's subdivision ordinance and applicable state laws pertaining to subdivision of land shall be followed. (Ord. 263, 7-12-2005; amd. Ord. 431, 3-16-2021)