Auburn, WA Landscaping Rules: Weed Ordinances (2026)
Key Facts
- Max height (occupied residential)
- 6 inches, ACC 8.20.010(C)
- Max height (other lots)
- 12 inches, ACC 8.20.010(D)
- Zone exemption
- RC residential conservancy zone
- Abatement notice
- At least 10 calendar days
- Appeal deadline
- 10 calendar days of notice
- Cost recovery
- Lien ranks with property taxes
Summary
Auburn caps lawn grass on occupied residential lots at six inches under ACC 8.20.010(C); taller grass, weeds, brush or dead vegetation citywide is a declared public nuisance. The RC residential conservancy zone is exempt. Code enforcement can order abatement, bill the owner for the cutting, and place a lien on the property if the bill goes unpaid.
Vegetation left uncut and/or in an unkempt stage may cause safety hazards, fire hazards, and/or pest harborages, and may interfere with, annoy, injure or endanger the comfort, repose, health or safety of others...thus constituting a public nuisance. ... C. Grasses (lawn) within the yards of occupied residential properties which are not maintained at a height of six inches or less are also declared to be a public nuisance; provided, that property within the RC residential conservancy zone shall be exempt from the provisions of this subsection.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 7023, passed July 6, 2026).
Full Breakdown
20 treats overgrown vegetation as a public nuisance across the city of Auburn. 010(C) sets the operative number for lawns: grass on the yards of occupied residential properties may not exceed six inches, unless the parcel sits in the RC residential conservancy zone. The same section also reaches trees, shrubs, vines and dead vegetation that create a fire hazard, block sightlines along a sidewalk or street, or degrade neighborhood character (subsections A, B and E), and bars excessive pruning that damages a required landscaped planting (subsection F).
Grasses, ground cover and vines on other lots and tracts, buildable or not, that sit within or adjacent to developed areas and are not used for agriculture face a looser 12-inch ceiling under subsection D. 25 ACC; a person's property for this purpose includes any landscape strip abutting it out to the right-of-way. 040 lets the city abate it directly after giving at least 10 calendar days' additional notice of the intended abatement. 050 makes the property owner responsible for the city's abatement costs, which become a lien on the property ranking equally with state, county and municipal taxes, and unpaid bills can be sent to a collection agency. 060.
Violations & Fines
Violating Chapter 8.20 is a civil infraction or civil penalty under Chapter 1.25 ACC, escalating to a misdemeanor only where ACC 1.25.050 designates it as such. A property owner who ignores a correction notice faces city-ordered abatement, a billed cost that becomes a property lien equal in rank to tax liens, referral to a collection agency, and no defense that the city failed to act, since ACC 8.20.070 makes enforcement discretionary, not mandatory.
Frequently Asked Questions
What is the maximum grass height allowed in Auburn?
What happens if I ignore a mowing violation notice?
Can I appeal a grass-height violation in Auburn?
Sources & Official References
Other rules in Auburn
How Auburn compares: Cities with the Strictest Weed and Property Maintenance Rules·Compare Auburn to another location·View the Washington landscaping rules overview
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Weed Ordinances in Nearby Cities
How other cities in King County handle weed ordinances.