Auburn, WA Landscaping Rules: Artificial Turf (2026)

Auburn City Code has no specific prohibition on artificial turf for residential single-family use. Homeowners may install synthetic turf in lawns, play areas, pet areas, and rooftop terraces without a landscape permit. However, several cross-cutting rules apply. Under ACC Chapter 13.48 (Stormwater Management) and the Ecology 2019 Stormwater Manual, large impervious or low-infiltration surfaces including most artificial turf systems may count toward impervious surface thresholds that trigger stormwater review, especially on lots exceeding 5,000 sq ft of total impervious coverage. Commercial and multi-family development landscape plans under ACC 18.50 must meet minimum live plant requirements; artificial turf alone typically cannot satisfy landscape buffer or screening requirements. Critical area buffers (wetlands, streams, steep slopes) under ACC 16.10 do not allow artificial turf. Artificial turf in HOA and CC&R-restricted neighborhoods often requires architectural review. Proper base (crushed rock with drainage layer), geotextile fabric, and edge restraints extend product life and reduce heat island effect. Infill options vary; crumb rubber is common but alternatives like coated sand or cork are trending for environmental reasons.