Landscaping Rules in Federal Way, WA: What Residents Actually Need to Know

If you live in Federal Way or are thinking about moving there, landscaping rules are one of those things you probably won't think about until they affect you directly. Federal Way has 8 specific rules on the books covering different aspects of landscaping rules, and some of them might surprise you.

Native Plants

Federal Way encourages native plant landscaping under FWRC 19.125. Natives can meet landscape buffer, parking lot, and critical-area mitigation requirements. SWM promotes natives for stormwater and habitat benefits.

Key details: Encouraged: Yes. Code: FWRC 19.125. Critical Areas: Natives required. Resource: SWM / WSU Master Gardeners. Goal: Habitat + water savings.

No penalty for not using natives on residential lots. In mitigation sites and critical-area buffers, failure to use required native species can void permit approvals and trigger mitigation enforcement.

Federal Way is more permissive than most cities when it comes to native plants. That said, there are still limits.

Tree Trimming

Federal Way tree trimming is governed by FWRC 19.120 and 4.35. Routine pruning needs no permit, but heavy pruning or topping of a significant tree that removes over 25% of canopy may count as removal.

Key details: Routine Prune: No permit. Major Prune: May need permit (>25%). Sidewalk Clearance: 8 ft minimum. Street Clearance: 14 ft minimum. Code: FWRC 19.120 + 4.35.

Unauthorized aggressive pruning/topping of regulated trees: civil infraction plus mitigation replanting under FWRC 19.120.160. Failure to trim right-of-way vegetation: civil infraction under FWRC 4.35.

Rainwater Harvesting

Rainwater harvesting is legal and encouraged in Federal Way under RCW 36.89.080. Rain barrels and cisterns need no permit; indoor/plumbed systems require a permit under FWRC 13.22.

Key details: Legal: Yes (RCW 36.89.080). Rain Barrel Permit: Not required. Indoor System: Permit required. LID Credit: Available. Contact: SWM (253) 835-2700.

Unpermitted indoor/plumbed rainwater systems: building code violation, civil infraction under FWRC 1.15 and stop-work orders. Contamination violations may trigger health-department enforcement.

The rules around rainwater harvesting in Federal Way lean permissive, but that does not mean anything goes.

Artificial Turf

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.

Key details: Residential Use: Generally allowed. Counts as Landscape: No (FWRC 19.125). Impervious Surface: Yes, triggers stormwater. Critical Areas: Restricted. Permit Center: (253) 835-2607.

Using artificial turf in required living-landscape areas: permit denial or revocation. Exceeding impervious surface limits without permits: civil infraction plus stormwater mitigation requirements.

Water Restrictions

Lakehaven Water and Sewer District serves Federal Way and promotes voluntary conservation year-round. No standing odd/even watering days. Mandatory restrictions apply only during declared drought emergencies.

Key details: Water Provider: Lakehaven Water & Sewer. Source: Green River + local wells. Standing Restriction: None (voluntary). Drought Law: RCW 90.54. Contact: (253) 941-1516.

During declared drought stages: Lakehaven customer violation fees ($50-$500+ depending on stage). Non-payment can lead to service disconnection. Water theft from unauthorized hydrants: criminal misdemeanor.

If you are coming from a city with tighter rules, you will find Federal Way gives residents more flexibility on water restrictions.

Grass Height Limits

Federal Way has no specific grass-height number but prohibits overgrown grass and weeds that create nuisances or fire hazards under FWRC Title 22 and the IPMC. Grass over 10-12 in typically triggers complaints.

Key details: Height Limit: No hard number, typ. 10-12 in. Code: FWRC 22 + IPMC. Noxious Weeds: Prohibited (RCW 17.10). ROW Mowing: City mows shoulders. Enforcement: Complaint-based.

Unabated overgrown vegetation: civil infraction under FWRC 1.15. City may abate at owner cost and file a lien under FWRC Title 22. Noxious weed violations can trigger County enforcement under RCW 17.10.

Tree Removal & Heritage Trees

Federal Way regulates tree removal under FWRC 19.120. Any tree 6 inches DBH or larger generally needs approval and must meet Tree Units per Acre standards in Table 19.120.130-1. Smaller trees may be exempt.

Key details: Threshold: 6 inches DBH. Code: FWRC 19.120. Standard: Tree Units per Acre (TUA). Exemptions: Hazard, invasive, dead trees. Critical Areas: Plan required.

Unauthorized removal of regulated trees: civil infraction plus mitigation replanting at replacement ratios set by FWRC 19.120.160. Willful violations in critical areas can trigger larger penalties under FWRC Title 19.

This is one of the stricter rules in Federal Way's municipal code. If you are unsure whether your situation complies, it is worth checking with the city before proceeding.

Weed Ordinances

Federal Way prohibits noxious weeds under FWRC Title 22, the IPMC, and King County Noxious Weed rules (RCW 17.10). Class A and B weeds must be controlled. Nuisance weeds trigger abatement.

Key details: State Law: RCW 17.10. County Code: KCC 21.08. Local Code: FWRC Title 22. Class A Weeds: Eradication required. Enforcement: County + city coordination.

Failure to control noxious weeds: King County civil penalties per RCW 17.10, plus local nuisance abatement with lien under FWRC 22. Class A/B violations may be enforced at both county and city levels.

The Bottom Line

Compared to many U.S. cities, Federal Way gives residents more room on landscaping rules. 3 of the 8 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

This guide is based on Federal Way's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.