Grass and weeds on residential property in unincorporated St. Louis County cannot exceed 8 inches in height. Property owners have 7 days after a violation notice to cut; non-compliance triggers county-contractor cutting billed back as a special tax bill.
SLCRO Chapter 619 (Weed Control) and §1110.302.4 (Property Maintenance — Weeds) jointly enforce the 8-inch limit. The Neighborhood Preservation Program inspects on complaint. Cure period is 7 days from the date of the notice; after that, a county contractor cuts the lawn and the cost goes on the owner's tax bill as a special assessment lien.
Special tax bill for cutting cost (typically $150-$500); up to $1,000 fine; lien on property.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
St. Louis County, MO
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See how St. Louis County's grass height limits rules stack up against other locations.
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