Renton, WA Landscaping Rules: Composting (2026)
Key Facts
- Max height
- Under 4 feet
- Max diameter at ground level
- 6 feet
- Setback from any dwelling
- 30 feet or more
- Setback from adjoining property
- 4 feet or more
- Governing section
- RMC 1-3-3.B.19.h.i
Summary
Renton exempts small compost piles from its nuisance code under RMC 1-3-3. A pile stays lawful only if it is under 4 feet tall, no more than 6 feet across at ground level, at least 30 feet from any dwelling, and at least 4 feet from a neighboring property line.
The following shall not constitute public nuisances: i. Compost piles less than four feet (4') in height and six feet (6') in diameter at ground level, and 30 feet (30') or more from any dwelling, and four feet (4') or more from adjoining properties;
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
" A pile meeting all four dimensions is protected from nuisance enforcement; a taller, wider, or closer pile is not automatically a nuisance but loses the code's safe-harbor exemption and can be cited under the general nuisance provisions if it becomes unsanitary, odorous, or otherwise a health or property-value concern for the surrounding area. The same subsection exempts other yard conditions that often accompany composting, including storm debris for 30 days after a storm, construction debris for 14 days after work is completed, and fallen leaves, needles and tree fruit from October through April except when they land on public sidewalks.
C through G), so a compost pile that stays within the four listed dimensions cannot be the basis for a code compliance complaint, voluntary abatement request, or citation, while one that exceeds them is evaluated case by case rather than being an automatic violation.
Violations & Fines
A compost pile within the 4-foot height, 6-foot diameter, 30-foot dwelling setback and 4-foot property-line setback cannot be cited as a nuisance. A pile outside those limits is not automatically unlawful but can be pursued through the standard chapter 1-3 nuisance process, starting with a request for voluntary correction and escalating to City abatement and a cost lien if the owner does not comply.
Frequently Asked Questions
How big can a backyard compost pile be in Renton before it risks a nuisance complaint?
Does a compost pile need to be a set distance from my neighbor's yard in Renton?
What happens if my Renton compost pile exceeds the exempt size?
Sources & Official References
Other rules in Renton
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Composting in Nearby Cities
How other cities in King County handle composting.