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Sign Permit in Missouri: Cost, Steps & How to File

In Missouri, get a sign permit is straightforward once you know the sequence. Costs range from $50 to about $800, timelines run from 7 days to roughly 45 days depending on your specific situation. Here's the Missouri-specific walkthrough.

Typical cost

$50–$800

Timeline

7–45 days

Renewal

No renewal — one-time permit per sign, until you change the sign

Who needs it

commercial businesses installing exterior signage

Steps to get a sign permit in Missouri

Step 1: Measure the sign face area, height, and setback from property line
Step 2: Check the city's sign code — every city has size, height, illumination, and landmark district limits
Step 3: Get landlord written approval if you're a tenant
Step 4: Apply through the city's planning or building department with a scale drawing showing dimensions, materials, and mounting method
Step 5: Pay the sign permit fee (often based on sign area)
Step 6: Schedule the sign inspection after installation — the sign isn't legal until it passes

Required documents

Sign drawing to scale
Site plan showing sign location
Landlord approval letter
Contractor info (if hiring an installer)

Where to file in Missouri

Business filings: https://bsd.sos.mo.gov
Secretary of State: https://www.sos.mo.gov
Tax authority: https://dor.mo.gov
Labor/workforce: https://labor.mo.gov

Heads up: The state fee is the floor. Third-party filing services will offer to handle this for you at 2-10× the state cost. If your setup is simple, filing yourself through the Missouri portal is straightforward; if it's not (foreign qualification, complex ownership, non-US members), the extra service cost is often justified.

Related permits in Missouri

Business License in Missouri

Frequently asked questions

How much does a sign permit cost in Missouri?

Typical cost ranges from $50–$800. The exact fee depends on your specific business type, city, and any expedited processing you choose.

How long does it take to get a sign permit in Missouri?

Most Missouri applications complete in 7–45 days. Same-day or next-day processing is often available for an added fee at the state level.

Do I need a sign permit if I'm just starting a home business in Missouri?

In most cases, yes — even home-based businesses in Missouri are subject to the same state filing rules. Local rules (city and county) may add a home occupation permit on top.

This page reflects general Missouri filing rules as of 2026. Fees and processing times change; verify the current amounts with the linked state agency before filing.