St. Charles County, MO Short-Term Rentals: Short-Term Rental Permits (2026)
Short-term rental permit rules in St. Charles County, MO, also called Airbnb permits, vacation rental licenses, or STR registration, list the application steps, fees, and operating requirements for hosting.
Key Facts
- Permit type
- Conditional Use Permit
- Host requirement
- Must live on-site
- Guest room limit
- 1 to 5 rooms
- Approval body
- County Council, after public hearing
- Max fine
- $500 per day of violation
Summary
Renting rooms in your home to overnight guests in unincorporated St. Charles County falls under the 'bed and breakfast residence' use, which needs a Conditional Use Permit approved by the County Council, not a simple registration.
BED AND BREAKFAST RESIDENCE -- A single-family residence where the host must live in the residence; where there are between one (1) and five (5) guest rooms to house transient guests for overnight stay; where there is one (1) off-street parking space for each guest room and two (2) off-street parking spaces for the residence; also where breakfast is served.
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
The Unified Development Ordinance has no separate short-term-rental license; the closest local tool is the bed and breakfast residence use: a single-family home where the host lives on-site and rents one to five guest rooms to transient overnight guests, with breakfast served. In the RR through R1E single-family districts and the Agricultural district, this is listed as a Conditional Use, meaning it requires Planning and Zoning Commission review, a public hearing with notice mailed to neighbors within 500 feet, and final approval by the County Council before anyone can legally rent rooms to overnight guests.
Violations & Fines
Operating without the required Conditional Use Permit is a zoning violation. The Director of Planning and Zoning can order the use stopped within 10 days, and each day a violation continues is a separate offense punishable by up to $500 in fines or six months in jail.
Frequently Asked Questions
Can I rent my whole house short-term without a permit?
Where do I apply for the permit?
Does the permit expire?
Sources & Official References
Other rules in St. Charles County
How St. Charles County compares: Most Airbnb-Friendly Cities in America·Compare St. Charles County to another location·View the Missouri short-term rentals overview
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