Tacoma, WA Landscaping Rules: Composting (2026)
Key Facts
- Governing section
- TMC § 8.30.040.C.3
- Compost cap
- 2 cubic yards
- Firewood alternative
- stacked, cut 4 ft or less
- Exceeds cap
- treated as nuisance vegetation waste
Summary
Tacoma exempts a backyard compost pile from its vegetation-waste nuisance rule as long as it stays under two cubic yards, giving residents a lawful way to dispose of grass clippings and yard trimmings on-site.
Inappropriate disposal or accumulation of vegetation waste, including, but not limited to, grass clippings, cut brush, cut trees, cut weeds, and/or cut wood, except as contained in a compost pile not to exceed two cubic yards, or orderly stacked fire wood, if cut in lengths of four feet or less.
4. Any poisonous or hazardous material or thing on any real estate, so as to allow access to it by any animal or person.
5. Storing of flammable material on any real estate, including but not limited to old rags, rope, cordage, rubber, boxes, or paper, by properly licensed persons or businesses trading in such articles, unless it is in a building of fireproof construction.
6. Storing outside a completely enclosed building items that constitute a threat to the public health, safety or welfare, including but not limited to the following: scrap rope, rags, batteries, paper, trash, rubber debris, tires, waste, used lumber or salvaged wood, machinery or appliances or parts of such machinery, vehicular component parts, iron, steel, household goods or hardware, medications, medical supplies, or medical devices.
7. All unused, abandoned or discarded refrigerators, ice boxes, large appliances or similar containers which are left in any place exposed or accessible to children, whether such is outside any building or dwelling or within any unoccupied or abandoned building, dwelling or other structure.
8.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4946110; v22 updated 2026-07-28).
Full Breakdown
Under Tacoma Municipal Code § 8.30.040.C.3, letting grass clippings, cut brush, cut trees, cut weeds, or cut wood pile up is a declared public nuisance, unless the material is contained in a compost pile no larger than two cubic yards, or stacked as firewood cut to four feet or less. The exception sits inside Chapter 8.30's broader vegetation-waste nuisance rule, so a compost pile that grows past the two-cubic-yard cap loses its exempt status and can be cited the same as any other pile of yard debris left on the property.
Violations & Fines
A compost pile over two cubic yards forfeits the exemption and is treated as illegally accumulated vegetation waste, a public nuisance citable under Chapter 8.30.
Frequently Asked Questions
How big can my compost pile be in Tacoma?
Can I stack cut yard waste instead of composting it?
Sources & Official References
Other rules in Tacoma
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Composting in Nearby Cities
How other cities in this county handle composting.