St. Charles County, MO Sign Regulations: Holiday Displays (2026)
Key Facts
- Governing section
- UDO Section 405.421(B)(1)
- Duration limit
- None -- holiday lighting fully exempt
- Also exempt
- Civic celebration and promotion lighting
- Enforcing agency
- Dept. of Community Development
- Permit for holiday lights
- None required (Section 500.150)
Summary
St. Charles County's exterior lighting standards regulate glare and light spillover from residential and commercial properties, but temporary outdoor lighting used during customary holiday seasons is fully exempt from those requirements.
The requirements of this Section apply to all private exterior lighting in conjunction with any institutional development, commercial development, industrial development or a residential development with a parking area for five (5) or more vehicles... However, this Section shall not apply to: 1. The use of temporary outdoor lighting used during customary holiday seasons; and 2. The use of temporary outdoor lighting used for civic celebrations and promotions;
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4863880; v61 updated 2026-05-11; through 05-11-2026).
Full Breakdown
St. Charles County's Unified Development Ordinance regulates exterior lighting to control glare and spillover onto neighboring properties, covering institutional, commercial, industrial, and residential developments with parking lots or multiple housing units. Section 405.421 carves out an express exception for temporary outdoor lighting used during customary holiday seasons, along with lighting for civic celebrations and promotions. That means homeowners and businesses stringing up seasonal lights face no fixture-orientation, intensity, or duration standard under this section -- the Department of Community Development enforces the general lighting rule, not the holiday exemption.
Violations & Fines
There's no violation for holiday lighting under this section -- it's exempt. Violating the general exterior lighting standards for non-holiday installations can draw a code enforcement notice from the Department of Community Development.
Frequently Asked Questions
Does St. Charles County limit how long holiday lights can stay up?
Do I need a permit for holiday lights in St. Charles County?
Sources & Official References
Other rules in St. Charles County
Compare St. Charles County to another location·View the Missouri sign regulations overview
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