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City of Arden Hills Planning Commission Meeting for June 8, 2016 P:\Planning\Planning Cases\2016\PC 16-015 - 1494 Keithson Drive - Variance\Memos_Reports_16-015 Page 3 of 8 B. Structure Setback – Variance Required The existing dwelling is in conformance with the R-1 District setback requirements. A variance is needed in this case to allow for the proposed three-season porch to encroach 3 feet – 6inches into the required 30-foot rear yard setback, creating a setback of 26 feet – 6 inches. The porch would extend 12 feet from the rear side of the house and measure 18 feet in width for a total area of 216 square feet. The porch includes a gas fireplace on the east side of the structure and the cantilevered area for the fireplace would extend 6 inches closer to the rear property line. The proposed project would include a deck that would wrap around the southern side of the house and be accessed through the new porch addition. The deck would measure approximately 10 feet by 20 feet with a total area of 211 square feet. While the deck would be constructed in line with the eastern side of the porch, a rear yard setback variance would not be required for the deck portion of the project. Section 1325.03, Subd. 2 (A) of the Zoning Code allows for certain parts of principal structures, including decks, to extend into required setback areas. In the R-1 District, decks may extend six feet into the rear yard setback but cannot be less than six feet from the lot line. The applicants would be allowed to construct a deck up to 24 feet from the rear property line. As proposed, the deck would be setback 27 feet from this lot line. C. Structure Height – Conforming The existing dwelling is 35 feet in height, which is the maximum height permitted in the R-1 District. The proposed porch addition would be elevated above grade and constructed at the main level of the dwelling. The height of the porch addition would be less than the height of the existing house. D. Lot Coverage – Conforming The property is currently in conformance with the structure and landscape coverage requirements for the R-1 District. The proposed addition would increase structure coverage by a total of 427 square feet to 7.69 percent of the lot area. Landscape coverage would be reduced to 87.58 percent. Properties in the R-1 District are permitted up to 25 percent structure coverage and must maintain a minimum landscape lot area of 65 percent. Applicable R-1 Lot Requirements 1. Minimum Lot Area (sf.) 14,000 2. Minimum Lot Size (ft., width/depth) 95/130 3. Height (ft.) 35 4. Floor Area Ratio (FAR) 0.3 5. Lot Covered by Structure 25% 6. Minimum Landscape Lot Area 65% 7. Minimum Building Setbacks (ft) Front Yard 40 Rear Yard (Principle) 30 Rear Yard (Accessory) 10 Side Yard Interior - Principal (Minimum/total both yards on lot) 10/25 Side Yard Interior - Accessory 10 Side Yard Corner 40