Bellevue, WA Landscaping Rules: Artificial Turf (2026)

Bellevue allows artificial turf installations on residential properties without specific prohibitions in the land use code. However, artificial turf is classified as impervious surface under Bellevue stormwater management regulations since it does not infiltrate water the way living grass does. This impervious classification affects maximum lot coverage calculations under LUC 20.20.010 and may trigger stormwater mitigation requirements if total impervious area exceeds thresholds (typically 2000 square feet added on single-family lots). Artificial turf is generally prohibited in critical area buffers (wetlands, streams, shorelines) where natural vegetation provides ecological functions. Homeowner associations may impose additional aesthetic restrictions on artificial turf visibility from the street. Sport-grade infill turf used for residential putting greens or play areas is acceptable for most uses though rubber crumb infill raises environmental concerns about microplastic runoff. Modern natural-looking turf products are increasingly popular in Bellevue particularly in west-facing sunny yards where grass struggles and drought tolerance is valued. Proper drainage base installation is essential to prevent water pooling.