Seattle Green Factor is a score-based code requirement that increases the amount and improves the quality of landscaping in new development. Landscaping plays an important role in how new development looks and functions. Well-designed landscaping:
If your project is required to meet the Seattle Green Factor, you must reach a minimum score established by zoning. You can chose from a “menu” of landscape credits for various features, including green roofs, rain gardens, vegetated walls, and trees and shrubs. You can receive bonus credits if you plant along the sidewalk, use native plants, or create a food garden.