St. Louis, MO Noise Ordinances: Construction Hours (2026)
Construction hours in St. Louis, MO, sometimes called construction noise rules or contractor work-hour ordinances, set when contractors can run power tools, hammers, and heavy equipment.
Key Facts
- Permitted hours
- 6:00 a.m. to dusk, Mon-Sat
- Regulated zone
- Within 1,000 feet of homes
- Emergency exception
- Max 3 days without permit
- Permit issuer
- Building Commissioner
- First offense fine
- $100 to $500
Summary
St. Louis bars construction, demolition and excavation noise within 1,000 feet of homes before 6 a.m. and after dusk, Monday through Saturday, with only a 3-day emergency exception.
Construction, demolition and excavation within one thousand (1,000) feet of a residential property...is prohibited before 6:00 a.m. and after dusk, Monday through Saturday, except in case of an urgent necessity in the interest of public safety for a period of three (3) days. After three (3) days...unless a permit has been obtained from the Building Commissioner which allows specific action during any of the hours between 6:00 a.m. and dusk, Monday through Saturday.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 11).
Full Breakdown
City code bars construction, demolition and excavation work within 1,000 feet of a residential property before 6:00 a.m. or after dusk, Monday through Saturday. The only exception is urgent necessity in the interest of public safety, and that runs just three days; after that, work outside the permitted window requires a permit from the Building Commissioner specifying which hours are allowed. First offenses draw a fine of $100 to $500 or 20 hours of community service in lieu; repeat violations within a year climb to $250 to $500 or 30 hours, under Section 15.50.082.
Violations & Fines
Violating Section 15.50.081 draws a fine of $100-$500 for a first offense and $250-$500 for repeat offenses within a year, or community service in lieu, under Section 15.50.082.
Frequently Asked Questions
What hours can construction noise happen in St. Louis?
Is construction allowed on Sundays in St. Louis?
What happens if the emergency exception runs out?
Sources & Official References
Other rules in St. Louis
How St. Louis compares: Cities with the Strictest Construction Hours·Compare St. Louis to another location·View the Missouri noise ordinances overview
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