Overview: Are Short-Term Rentals Allowed in O'Fallon, MO?

Short-term rentals are allowed in O'Fallon, MO, but require proper licensing and compliance with local regulations. The city treats short-term rentals as rental properties requiring occupancy permits before guests can stay in the units. While the city doesn't appear to have specific standalone short-term rental ordinances like some neighboring cities, investors must comply with standard rental property requirements, building codes, and state-level regulations that are currently evolving.

How to Start a Short-Term Rental Business in O'Fallon

Step 1: Property Due Diligence

• Verify Zoning Compliance: Use the city's zoning and district map tools to confirm your property is suitable for rental use
• Check Fire District Requirements: O'Fallon is served by multiple independent fire districts that may require separate permits
• Review Building Codes: The city has adopted 2021 ICC Codes and 2020 NEC as of January 1, 2025

Step 2: Permit Acquisition Process

1. Register on CitizenServe Portal: Create a free account at the city's online permitting system
2. Apply for Residential Rental Occupancy Permit: Required before occupying any rental unit
3. Schedule Required Inspections: Plan for 2-day notice periods for rental occupancy inspections
4. Obtain Business License: If operating as a commercial enterprise

Step 3: Operational Setup

• Ensure compliance with all adopted building codes
• Coordinate with appropriate fire district for any required fire safety permits
• Establish utility services and waste management arrangements

Required Documents, Permits, Licenses, and Guidelines

Essential Permits and Licenses

Required:

• Residential Rental Occupancy Permit (mandatory before unit occupation)
• Building Permits (if any renovations or modifications are needed)
• Business License (depending on operational structure)
• Fire District Permits (if required by your specific fire district)

Permit Application Requirements:

• Project documentation through CitizenServe portal
• Submittal requirements vary by permit type
• Contractor Project Signature Sheet for commercial work
• Energy compliance forms for commercial properties

Key Compliance Documents

• ICC Code Compliance: 2021 International Code Council Codes adopted
• National Electrical Code: 2020 NEC requirements
• Commercial Energy Commissioning Forms (for applicable properties)
• Residential Re-roofing Requirements (if roof work needed)

Documentation Checklist

• Property ownership documents
• Site plans and construction documents
• Contractor licensing and insurance
• Fire safety compliance certificates
• Utility service arrangements

Specific Regulations for Short-Term Rentals

City-Level Regulations (O'Fallon, MO)

Rental Occupancy Requirements:

• Residential rental occupancy permits required before any tenant occupation
• Inspections required prior to occupancy
• Building code compliance mandatory for all rental properties
• Change of use permits may be required depending on property classification

Building and Safety Standards:

• All properties must comply with 2021 ICC Codes and 2020 NEC
• Multiple fire districts serve O'Fallon with potentially different requirements
• Plan review and inspections required for new construction and major alterations

Permitting Process:

• All applications processed through CitizenServe portal
• Permit fees according to city schedule
• Inspection scheduling typically completed next business day

County-Level Regulations (St. Charles County)

Note: Specific St. Charles County STR regulations were not found in the provided content. Contact county authorities for county-specific requirements.

State-Level Regulations (Missouri)

Recent Legislative Developments (2025):

Property Tax Classification:

• House Bill 1086 passed by Missouri House would tax STRs as residential property (19% rate) rather than commercial property (32% rate)
• Addresses inconsistencies in how county assessors classify short-term rentals
• Bill awaiting action in Missouri Senate

State Tax Implications:

• Some county assessors have been taxing STRs at higher commercial rates
• New legislation aims to standardize treatment as residential property
• Bed and breakfast properties with owner on-site may have different classifications

Regulatory Environment:

• State-level framework described as "Wild, Wild West" by legislators
• Ongoing discussions about appropriate tax treatment and regulations
• Bed and breakfast operations with owner residence may have preferential treatment

Fire District Considerations

Important Notice: O'Fallon is served by multiple independent fire districts that are separate governmental entities with their own permitting requirements:

• Central County Fire & Rescue
• Cottleville Fire Protection District
• Lake Saint Louis Fire Protection District
• New Melle Fire Protection District
• O'Fallon Fire Protection District
• Wentzville Fire Protection District

Action Required: Contact your property's specific fire district to understand their individual requirements, as they operate independently of city oversight.

Contact Information for Local Authority

Primary Contact - Building and Permits Division

Address: O'Fallon Municipal Centre (City Hall), 100 North Main Street, 2nd Floor, O'Fallon, MO 63366

Main Building Division Phone: 636-379-5660

Key Staff Contacts:

Chris Gaw, Building and Code Enforcement Manager

• Email: cgaw@ofallonmo.gov
• Phone: 636-379-5432

Nathan Lacey, Building Official (Commercial Building Questions)

• Email: nlacey@ofallonmo.gov
• Phone: 636-379-5597

Scott Dabney, Residential Building Supervisor (Residential Building Questions)

• Email: sdabney@ofallonmo.gov
• Phone: 636-379-5564

Debbie Cammann, Administrative Assistant

• Email: dcammann@ofallonmo.gov
• Phone: 636-379-5599

Additional Contacts:

Planning Division: 636-379-5544 Engineering Department: 636-379-7630

General City Information:

• Phone: 636-240-2000
• Hours: Monday – Friday, 8:30 a.m. – 4:30 p.m.
• Email: citizenfirst@ofallonmo.gov

Links to Source Pages

Primary Government Resources

• City of O'Fallon Building and Permits Portal
• O'Fallon CitizenServe Permit Portal
• O'Fallon Municipal Code
• O'Fallon Zoning and District Map

Key Documents

• Commercial and New Home Permit Fees (PDF)
• Open in the "O" Business Guide (PDF)
• O'Fallon ICC Codes Access

Fire District Resources

• Central County Fire & Rescue
• Cottleville Fire Protection District
• Lake Saint Louis Fire Protection District
• New Melle Fire Protection District
• O'Fallon Fire Protection District
• Wentzville Fire Protection District
• Fire Districts Map (PDF)

State Resources

• Missouri House Bill 1086 (Short-Term Rental Tax Regulation)

Important Disclaimer: This guide is based on publicly available information as of the provided content date. Regulations for short-term rentals continue to evolve at state, county, and local levels. Investors should verify current requirements with local authorities before making investment decisions. The state legislative situation regarding property tax treatment of STRs remains fluid and could change, potentially affecting the regulatory and tax environment for short-term rental investments in O'Fallon.