23.75.160
Landscaping, street trees, and tree protection
Seattle Municipal Code · Seattle Mun. Code § 23.75.160
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A. Landscaping requirements 1. Standards. All landscaping provided to meet requirements under this Section 23.75.160 is required to meet standards promulgated by the Director to provide for the long-term health, viability, and coverage of plantings. 2. Green Factor requirement. A minimum Green Factor score of 0.30, computed pursuant to Section 23.86.019 except as otherwise provided in this Section 23.75.160 , is required for any lot with development containing: a. More than four dwelling units built after January 1, 2012; b. More than 4,000 square feet of nonresidential uses built after January 1, 2012; or c. More than 20 automobile parking spaces built after January 1, 2012. 3. Landscape elements provided within pedestrian pathways, access drives, or parks may not be counted toward meeting the minimum requirement in subsection 23.75.160.A.2. B. Street tree requirements. Street trees are required when a proposed development is on a lot that abuts a street. Existing street trees shall be retained unless removal is approved by the Director of Transportation. The Director, in consultation with the Director of Transportation, shall determine the number, type, and placement of street trees to be provided in order to: 1. Improve public safety; 2. Promote compatibility with existing street trees; 3. Match trees to the available space in the planting strip; 4. Maintain and expand the urban forest canopy; 5. Encourage healthy growth through appropriate spacing; 6. Protect utilities; and 7. Allow access to the street, structures, and lot. C. Except for any proposal that meets the planned action ordinance within the MPC zone, Chapter 25.11 shall apply to proposed development. All proposed development shall comply with the requirements of Sections 25.11.050 , 25.11.070 , and 25.11.080 . (Ord. 125603 , § 68, 2018; Ord. 123963, § 26, 2012.)