Residential planned unit developments shall be permitted in shoreland areas subject to the information and procedural requirements of the city zoning code which is adopted by reference in Chapter 154 of this code. Densities shall be calculated in accordance with this section.
(A) Minimum size. All residential PUD's shall contain at least five dwelling units.
(B) Establishment of tiers for density calculation. For the purpose of calculating dwelling unit or site density, the following shoreland tiers are established by locating one or more lines approximately parallel to a line that represents the ordinary high water level:
General Development Lakes - First Tier 200 feet
General Development Lakes - Second and Third Tier 267 feet
Tributary Streams 300 feet
(C) Residential PUD density evaluation. The procedures for determining the “base" density of a PUD and density increase multipliers are as follows. Allowable densities may be transferred from any tier to any other tier further from the waterbody, but must not be transferred to any other tier closer. The suitable area within each tier is divided by the single residential lot size standard (8,400 sq. ft.). Suitable land shall exclude wetlands, bluffs, and land lying below the ordinary high water level. Proposed locations and numbers of dwelling units or sites for the residential planned unit developments are then compared with the tier, density, and suitability analyses herein and the design criteria in division (E) of this section.
(D) Density increase multipliers. The following density increase multipliers shal1 apply.
(1) Increases to the dwelling unit base densities previously determined are allowable if the dimensional standards in § 151.45 are met or exceeded and the design criteria in division (E) of this section are satisfied. The allowable density increases in division (D)(2) of this section will only be allowed if structure setbacks from the ordinary high water level are increased to at least 50% greater than the minimum setback, or the impact on the waterbody is reduced an equivalent amount through vegetative management, topography, or additional means acceptable to the city and the setback is at least 25% greater than the minimum setback.
(2) Allowable dwelling unit increases for residential planned development areas:
Density Evaluation Tiers Maximum density increase
within each tier (percent)
within each tier (percent)
First 50
Second 100
Third 200
Fourth 200
Fifth 200
(E) Design criteria. The following criteria will be applied to planned unit developments within the shoreland area.
(1) At least 50% of the total project area shall be preserved as open space. The open space computation shall not include road rights-of-way, or land covered by roads, structures or parking surfaces.
(2) Open space shall include areas having physical characteristics which are unsuitable for development in their natural state and areas containing significant historic sites or unplatted cemeteries.
(3) Open space may contain outdoor recreational facilities for use by the owners of residential units or the public.
(4) The appearance of open space areas, including topography, vegetation and allowable uses, shall be preserved.
(5) Accessory structures and facilities, except water-oriented accessory structures, must meet the required principal structure setback.
(6) Water-oriented accessory structures and facilities may be allowed if they meet or exceed the provisions identified in § 151.45(B).
(7) The shore impact zone, based on normal structure setback, must be included as open space. At least 50% of the shore impact zone area of existing developments or at least 70% of the shore impact zone area of new developments must be preserved in its natural or existing state.
(F) Public utilities required. PUD's shall be connected to public water supply and sanitary sewer systems.
(G) Maintenance and administration. Before final approval of a PUD is granted, the developer/owner shall provide for the preservation and maintenance, in perpetuity, of open space and the continuation of the development as a community.
(Ord. 321, passed 10-17-94)