What Is a Roofing Permit, and Why Does It Matter?
A roofing permit is official authorization from your local building department to begin construction on your roof. It ensures that the work:
- Meets current building codes
- Is safe for occupants
- Passes final inspections
- Maintains home value and insurability
Skipping a permit can lead to hefty fines, stop-work orders, or insurance claim denials. That’s why reputable roofing contractors—like Horizon Roofing & Exteriors—always check and pull the proper permits before work begins.
City-by-City Roofing Permit Requirements in Missouri
🔸 St. Louis City
- Permit Required for: Roof replacements and structural repairs
- Department: Building Division
- Inspection Required: Yes
- Tip: Permit is typically required even for recovering an existing roof.
🔸 St. Louis County
- Permit Required for: Most residential roofing jobs
- Department: Public Works – Residential Building & Zoning
- Other Info: Plans may need to show insulation, ventilation
🔸 St. Charles City
- Permit Required for: New roofs and significant repairs
- Department Contact: Community Development/Code Enforcement
- Note: No permit needed for basic repairs under $1,000 in some cases
🔸 St. Charles County
- Permit Required for: Full replacements or major repairs
- Special Rule: Permit not needed for patch repairs under 25% of total roof area
- Inspections: May require a mid-roof or final inspection
🔸 O'Fallon
- Permit Required for: All roof replacements and decking repairs
- Department: Building & Code Enforcement
- Tip: Permit turnaround is usually fast (1–2 days)
🔸 Wentzville
- Permit Required for: New installations and decking replacement
- Extras: Must include ventilation calculation
- Warning: Work without a permit can delay real estate closings
🔸 Chesterfield
- Permit Required for: Roofing services that involve material replacement
- Includes: Shingles, tile, or structural decking
- Application: Online or in-person submission with scope of work
🔸 Jefferson City
- Permit Required for: Any roof system replacement
- Good to Know: Recovery (layover) may still require a permit depending on code updates
Does Horizon Roofing & Exteriors Handle the Permit Process?
Absolutely. We manage the full permit process as part of our professional roofing services in Missouri. Our team:
- Researches your local building code
- Submits paperwork and fees
- Coordinates inspections with the city
- Keeps your project compliant and stress-free
No guesswork. No surprises. Just expert roofing done right.
When Might a Roofing Permit NOT Be Required in Missouri?
In some cases, minor roof repairs may not need a permit. This can include:
- Small leak repairs
- Replacing a few missing shingles
- Fixing flashing or vent boots
However, if the project exceeds 25% of the roof area (common city rule), it likely requires a permit—even if you’re not replacing the full roof.
🛑 Avoid DIY roofing without checking local rules first. If you’re unsure, Horizon can inspect your roof and guide you.
⚠️ Why You Should Avoid Contractors Who Skip Permits
If a roofer tells you a permit isn’t needed—when it clearly is—that’s a major red flag.
🚫 Unpermitted work can lead to:
- Failed home inspections during resale
- Voided homeowner’s insurance
- Safety risks due to poor workmanship
- Fines from the city or county
Always ask: “Will you pull the permit?”
If the answer is no, find another contractor.
Why Missouri Homeowners Choose Horizon Roofing & Exteriors
We’re not just roofers—we’re code-compliant professionals who care about your home, your investment, and your peace of mind. Serving homeowners across Missouri, Horizon Roofing & Exteriors offers:
- Fully licensed & insured roofing services
- Permit handling for every project
- Storm damage and insurance support
- Superior warranties and workmanship
Need a Roof Replacement or Repair? Let’s Handle the Permit for You
Don’t get tangled in red tape. Let Horizon Roofing & Exteriors make your next roofing project simple, safe, and city-approved.
Call (636) 734-7532 or schedule your inspection today.
We proudly serve St. Charles, St. Louis, Dardenne Prairie, Chesterfield, Wentzville, and beyond.
FAQ: Roofing Permits in Missouri
Brian Donohue
Brian Donohue is the owner of Horizon Roofing & Exteriors, the leading roofing company in St. Peters, Missouri, dedicated to delivering quality roofing solutions. With a strong background in project management, sales, and customer service, Brian has built a reputation for reliability and excellence in the roofing and construction industry.