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_____________________________________________________________________________________________ City of Arden Hills City Council Meeting for August 21, 2017 P:\Planning\Planning Cases\2017\PC 17-021 - Pulte Homes - Concept Plan Review - Parkshore Drive Properties\Memos_Reports_17-021 Page 4 of 5 Amendment would also be required to change the Future Land Use designation of the site to High Density Residential, which supports densities of 9 to 12 units per acre. Additional flexibility would be needed in the areas of impervious surface coverage, structure setbacks, and building height. The maximum impervious surface coverage permitted in the R-3 District is 35 percent. As a whole, the project would have an impervious surface coverage of 58.9 percent. Pulte has stated that the proposed amount of impervious surface is typical for this type of townhome project and has expressed a willingness to explore creative stormwater management solutions to satisfy the concerns of the City and the Rice Creek Watershed District. The development would also deviate from the R-3 District setback requirements. A 40-foot front yard setback is required from the Parkshore Drive and Old Highway 10 right-of-way lines. In discussions with Pulte, staff recommended that the townhomes be located closer to Parkshore Drive considering the front of the buildings will be oriented towards the perimeter and private garages would be rear-loaded. The concept plan indicates a setback of 15 feet from the Parkshore Drive and Old Highway 10 property lines. In shifting the buildings closer to Parkshore Drive, a larger setback from the adjacent single-family residential property could be accommodated. The closest townhome to the southeast side property line would be 40 feet. The R-3 District requires a minimum side yard setback of 5 feet. The final area where flexibility would be needed is in building height. The maximum height permitted in the R-3 District is 35 feet. The townhomes would be three stories and Pulte expects them to have a height of up to 39 feet. The additional building height is requested to allow for a steeper roof line that can accommodate more uses within the attic space. Below is a table of the R-3 District performance standards and which standards would likely be exceeded by the proposal: Performance Standards R-3 District Requirements Pulte Proposal Maximum Building Height 35 feet 39 feet Maximum Floor Area Ratio 0.3 To Be Determined Maximum Lot Coverage by Structures 25% 25.2% Maximum Impervious Surface 35% 58.9% Minimum Landscape Lot Area 65% 41.1% Minimum Principle Building Setback Front Yard (Parkshore and Old Hwy 10) 40 feet 15 feet Rear Yard (Interstate 694) 30 feet 30 feet Side Yard (East and West Lot Lines) 5 feet minimum/ 15 feet total 40 feet (East Lot Line) 15 feet (West Lot Line)