Design Standards—Landscaping and Irrigation | Development Standards
5. Landscaping – Surface parking areas
c. Ten feet of Type II landscaping shall be included in an industrial development along any portion adjacent to a commercial or institutional development; and d. Ten feet of Type II landscaping shall be included in an institutional use, excluding playgrounds and playfields, or an above-ground utility facility development, excluding distribution or transmission corridors, when located outside a public right-of-way.
Parking area landscaping shall be provided within surface parking areas with 10 or more parking stalls for the purpose of providing shade and diminishing the visual impacts of large paved areas as follows: a. Residential developments with common parking areas shall provide planting areas at the rate of 20 square feet per parking stall; b. Commercial, industrial, or institutional developments shall provide landscaping at a rate of: i. Twenty square feet per parking stall when 10 to 30 parking stalls are provided; and ii. Twenty-five square feet per parking stall when 31 or more parking stalls are provided; c. Trees shall be provided and distributed throughout the parking area at a rate of:
4. Landscaping – Drainage facilities
The landscaping requirements established for detention facilities in the Sammamish Addendum to the King County Surface Water Design Manual are hereby adopted by reference and shall be mandatory for all drainage facilities not located entirely underground. The department shall review and approve proposed landscaping plans subject to the following: a. Revisions to plans or additional landscaping requirements may be required to ensure that the proposed landscaping provides an effective screen and an enhancement to the overall appearance of the facility. b. Trails or walkways shall be incorporated into the landscaping plan. c. Ten feet of Type I landscaping consisting of 100 percent evergreen trees and shrubs shall be required for that portion of the perimeter of detention facilities where the slope of the detention facility exceeds 3H:1V.
i. One tree for every five parking stalls for a commercial or industrial development; and
ii. One tree for every 10 parking stalls for residential or institutional development; d. The maximum distance between any parking stall and landscaping shall be no more than 100 feet; e. Permanent curbs or structural barriers shall be provided to protect the plantings from vehicle overhang; and
f. Parking area landscaping shall consist of:
Effective | January 1, 2022
Title 21: Sammamish Development Code | 307
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