Landscape Design & Construction

street-side swales shown in photo

Sustainable design resources

Keep up with Seattle and WA code requirements and industry trends.

Soil Best Practices protect & restore soils

Green Stormwater Infrastructure (GSI)

Seattle’s Green Factor code requires trees, public green spaces, & GSI

Landscape Maintenance Plans required by Green Factor and Sustainable Sites.

SDOT Urban Forestry for tree protection, selection, and maintenance in City of Seattle right-of-way.

Seattle Streets Illustrated Seattle Right of Way Improvements Manual

Urban Street Stormwater Guide from National Association of City Transportation Officials

City of Seattle Standard Specifications and Plans sustainable specs:

  • Division 8 construction: erosion control, mulching, trees, soil, turf
  • Division 9 materials: soil, compost, mulch, erosion control
  • Plans 100 tree protection, planting, soil & irrigation

Sustainable landscapes

Local codes, industry standards, and successful developers are moving towards sustainable site development. Benefits include soil restoration, water conservation, onsite stormwater management, site appropriate trees and plants, sustainable materials, easier maintenance, and the community and customer value of green environments.

Landscape design

  • Fit the design to the site.
  • Start with the soil.
  • Choose the right plant for the right place.
  • Manage stormwater on-site.
  • Design for water conservation.
  • Develop a maintenance plan.

Landscape construction & installation

  • Minimize site impacts, to maximize benefits.
  • Protect and restore soil functions.
  • Plant it right, and care for plants until established.
  • Verify proper installation of soil, irrigation, etc.
  • Train end-users in sustainable care.
  • Train staff and users for long term success.

Learn about sustainable design in our guide Natural Landscaping: Design, Build, Maintain (pdf).

Explore this site for soil best practices, irrigation design, lawns and planting, training opportunities, and more.

Additional resources