Renton, WA Landscaping Rules: Tree Trimming (2026)
Key Facts
- Sidewalk/walkway clearance
- 8 feet minimum
- Street clearance
- 14 feet minimum
- Yard vegetation height cap
- 12 inches (excludes flower beds/shrubs/trees)
- Governing chapter
- RMC 1-3-3 Nuisances
- Enforcement path
- Voluntary or City abatement, then lien
Summary
Renton treats low-hanging limbs as a public nuisance under RMC 1-3-3. Branches must clear at least 8 feet above a sidewalk or public walkway and 14 feet above a public street, and property owners who let vegetation obstruct the right-of-way or block traffic signs face code enforcement.
(b) Vegetation such as overhanging limbs or branches that are less than eight feet (8') above a public walkway or sidewalk, or less than fourteen feet (14') above a public street;
(c) Vegetation that obstructs or hinders the use of any public walkway, sidewalk, or street, or that obstructs or obscures the view of traffic or traffic control devices;
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 6197, passed August 10, 2026).
Full Breakdown
iv lists vegetation among the conditions that constitute a code nuisance. " The same subsection also nuisance-declares vegetation over 12 inches tall in a front, back or side yard, adjacent right-of-way, planting strip or vacant lot (excluding flower beds, shrubbery and trees), cut vegetation left on the property instead of being bagged for yard waste, dead or diseased trees or branches that threaten life or property, fire-hazard grasses or weeds, and noxious weeds. Because these are chapter 1-3 nuisance violations rather than a separate tree ordinance, a Code Compliance Inspector or Administrator can pursue the same enforcement track used for any other nuisance: request voluntary correction, issue a Voluntary Abatement Agreement with a compliance deadline, or move to City abatement and lien recovery if the owner does not trim the growth.
Owners along arterials with heavy pedestrian or truck traffic should treat the 8-foot and 14-foot clearances as hard minimums, since obstructed sight lines to traffic control devices are independently flagged as a nuisance.
Violations & Fines
A property owner who fails to maintain clearance faces the general chapter 1-3 nuisance track: a misdemeanor citation under RMC 1-3-1 carrying up to a gross misdemeanor penalty under RCW 9A.20.021, or City abatement where the owner is billed for the trimming and any unpaid cost becomes a recorded lien against the property.
Frequently Asked Questions
How high must tree branches be over a Renton sidewalk?
Does Renton require trimming vegetation that blocks a stop sign?
What happens if I do not trim overhanging branches after a Renton nuisance notice?
Sources & Official References
Other rules in Renton
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How other cities in King County handle tree trimming.