Artificial turf is generally allowed on residential property in Federal Way, but it cannot replace required living landscape under FWRC 19.125. Large installs trigger stormwater rules as impervious surface.
Federal Way does not explicitly ban artificial turf on residential property. However, FWRC Chapter 19.125 landscape requirements for new development typically require living vegetation, so synthetic turf cannot be used to satisfy mandatory landscape buffer, parking lot, or street-frontage planting requirements. For residential homes, backyard or lawn-replacement turf is allowed, but it may be limited by stormwater management rules (FWRC Title 16 and the King County Surface Water Design Manual) because artificial turf creates impervious surface that triggers flow-control requirements when total impervious area exceeds development thresholds. Artificial turf is prohibited or tightly regulated in critical-area buffers (wetlands, streams, steep slopes). Older crumb-rubber infill systems have raised environmental concerns; newer cork or organic infill products are preferred. HOAs commonly have additional rules. Contact the Federal Way Permit Center at (253) 835-2607 before a large turf installation to confirm impervious-surface thresholds.
Using artificial turf in required living-landscape areas: permit denial or revocation. Exceeding impervious surface limits without permits: civil infraction plus stormwater mitigation requirements.
Federal Way, WA
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