Wentzville Business License and Commercial Occupancy Permit

Wentzville, Missouri requires most businesses to obtain a combined business license and commercial occupancy permit before opening. Unlike many states, Missouri has no statewide business license, so licensing responsibility falls entirely to cities and counties. This guide walks you through the Wentzville application process, fee structure, and renewal requirements so you can navigate the local approval process correctly.

Why Wentzville Requires These Permits

Wentzville has experienced significant growth, with population increasing over 10% since 2020. To manage development and ensure commercial spaces meet building codes and zoning requirements, the city requires a two-part permit: a business license (proving legal right to operate) and a commercial occupancy permit (confirming the space meets safety and code standards). The two applications are filed together as one combined package.

This is a local city requirement, not a Missouri state requirement. If you are also forming an LLC or corporation, you will file those documents with the Missouri Secretary of State separately. A business license and occupancy permit are different from entity formation.

Materials and Information You Will Need

Before you apply, gather the following:

• Business details: Legal business name, assumed name (if using a DBA), business type or industry classification, and primary activity description.
• Property information: Full street address of the business location, total square footage of the space you will occupy, property owner's name and contact information (or landlord name if leasing), and proof of lease or deed.
• Owner identification: Full legal name, date of birth, Social Security number or Federal EIN, phone number, email address, and mailing address of the person(s) requesting the license.
• Site plan or floor plan: A simple diagram or photo showing how the space will be laid out and what activities occur in each area. This confirms the use matches zoning.
• Certificate of Good Standing (if applicable): If you formed an LLC or corporation in Missouri, bring or reference your formation documents filed with the Missouri Secretary of State.
• Photo ID: Bring valid government-issued identification to verify your identity.
• Payment method: The combined fee is $50 for the business license plus the occupancy fee (see fee structure below).

Wentzville Fee Structure

Wentzville charges a flat $50 business license fee. The occupancy permit fee is based on square footage:

• Up to 10,000 square feet: $50 occupancy fee (flat rate).
• Over 10,000 square feet: Total square footage multiplied by $0.005 (minimum $50). For example, a 15,000 sq ft space costs $75 (15,000 × $0.005); a 25,000 sq ft space costs $125 (25,000 × $0.005).

Total cost example: A 6,000 sq ft retail location pays $50 (license) + $50 (occupancy) = $100. A 12,000 sq ft warehouse pays $50 (license) + $60 (occupancy) = $110.

Fees are paid with your application. Checks should be made payable to the City of Wentzville. Payment by card or online may be available; confirm current methods when you submit.

Step-by-Step Application Process

Step 1: Verify Zoning Compliance

Before applying for a business license, confirm that your intended business activity is permitted in your location's zoning district. Wentzville's zoning ordinance prohibits certain businesses in residential zones. Submit your address and business type to the Wentzville Planning and Zoning Department or check the zoning map on the city's website. Ask the city about any fee and how long the review takes. If your use is not permitted, you will need to seek a zoning variance or choose a different location.

Step 2: Complete the Combined Application Form

Request the Business License and Commercial Occupancy Permit application form from the Wentzville Finance Department or Planning and Zoning Department. The form asks for:

• Legal business name and any assumed names (DBA).
• Business description and primary industry code.
• Property address and square footage of the permitted area.
• Owner's full name, date of birth, and SSN or EIN.
• Proof of property ownership or valid lease agreement.
• Signature and date of the applicant or business owner.

Fill in every field. Incomplete applications will be returned and delay approval. If you are an LLC or corporation, also provide your formation documents from the Missouri Secretary of State (or their file number) so the city can confirm the entity exists and is in good standing.

Step 3: Submit Site Plan or Floor Plan

Attach a simple diagram showing how your business will use the space. If you are opening a retail shop, show the sales area, stockroom, and any back office. For a service business like a salon or office, show where customer services occur and any restricted areas. The plan does not need to be professionally drawn; a legible sketch with dimensions and labels is sufficient. The city uses this to confirm the use complies with zoning and safety codes.

Step 4: Provide Proof of Property Rights

If you own the property, submit a copy of the deed or title. If you are leasing, submit a copy of the signed lease agreement showing the address, square footage, and that the property owner has authorized business use. The landlord's contact information must be included. If the lease restricts certain business activities, note that in your application.

Step 5: File with the Wentzville Finance Department or Planning and Zoning

Submit your completed application, fee payment, site plan, and proof of property rights in person at the Wentzville city offices or by mail. The mailing address and office hours are available on the City of Wentzville website. In-person submission is faster and allows you to ask questions on the spot.

Step 6: Wait for Approval and Inspection

The city will review your application and may contact you if information is missing. Processing time depends on the use and whether an inspection is needed. Some uses (food service, automotive repair, storage) may require a building inspection before approval, which checks electrical, plumbing, fire safety, and zoning compliance. Once approved, the city will issue your combined business license and occupancy permit.

Step 7: Display Your License

Once issued, display your license in a visible location in your business, such as behind the front counter or in a window. Ask the city whether the license must be posted at your location.

Step 8: Register for Sales Tax with Missouri Department of Revenue

If your business sells tangible goods or taxable services, you must register with the Missouri Department of Revenue for a sales tax license before making your first sale. You can register online at https://dor.mo.gov/register-business/. There is no cost to register. You will be assigned a permit number and must collect sales tax at the combined state and local rate. Wentzville and St. Charles County add local sales tax on top of Missouri's 4.225% state rate. Confirm the total local rate with the Department of Revenue, as it varies by city. You must remit collected sales tax monthly or quarterly to the Department of Revenue.

Step 9: Obtain a St. Charles County Merchant License (If Required)

St. Charles County requires many businesses to obtain a separate county-level merchant license. Check with the St. Charles County Finance Department to confirm whether your business type requires it. If it does, the county license costs $15, $20 or $25 depending on the tier that applies to your business. Do not assume the city license covers county requirements; contact the county directly.

Common Mistakes to Avoid

• Mistake: Submitting an incomplete application. Missing your SSN, date of birth, or zoning verification delays approval. Fill in every field and confirm all documents are included before submitting.
• Mistake: Assuming your use is permitted in your zoning district. Some zones prohibit retail, manufacturing, or service businesses. Always verify zoning before signing a lease or purchasing property.
• Mistake: Not registering for sales tax before opening. If you sell taxable goods and fail to collect sales tax, you remain personally liable. Register with the Department of Revenue immediately, even if your business license is not yet approved.
• Mistake: Forgetting to renew your license. Wentzville business licenses expire and must be renewed by February 28 each year. Late renewal incurs penalties and may result in citations if you operate without a current license.
• Mistake: Forgetting the St. Charles County license. The city license does not automatically cover county requirements. Some businesses need both.
• Mistake: Not providing proof of property rights. You must show a lease or deed. A verbal agreement or email is not sufficient.

Renewal and Ongoing Requirements

Wentzville business licenses expire annually and must be renewed by February 28. Confirm the renewal fee with the city when you renew. If you do not renew by the deadline, you are operating illegally and risk fines and closure. If your business address or square footage changes significantly, notify the city and amend your license; fees may change.

Your commercial occupancy permit is tied to the specific address and business use. If you move locations or significantly change your business activity, you must apply for a new permit at the new location.

Disclaimer

This article is informational and does not constitute legal or tax advice. Wentzville's licensing requirements and fees are subject to change. Always confirm current requirements and fees with the Wentzville Finance Department or Planning and Zoning Department before applying. If your business involves regulated activities (food service, alcohol sales, childcare, professional licensing), you may need additional state-level licenses or permits beyond what this article covers. Consult with a Missouri business attorney or CPA if you have questions about your specific situation or are uncertain whether your business requires additional licenses.

Next Steps

• Contact Wentzville Planning and Zoning to verify your use is permitted in your zoning district.
• Request the Business License and Commercial Occupancy Permit application form from the city.
• Gather your property documentation (lease or deed) and owner identification.
• Submit your application and fee payment in person or by mail.
• Register for a Missouri sales tax permit at https://dor.mo.gov/register-business/ if you sell taxable goods or services.
• Contact St. Charles County to confirm whether your business requires a county merchant license.
• Display your license prominently when you receive it.