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Sewer Line Replacement · Franklin County, Missouri
Permit required
In Missouri, a Sewer Line Replacement requires a plumbing permit.
Replacing a sewer line requires a plumbing permit; work in the public right-of-way also needs a separate permit from the municipality or utility. Plans are reviewed under the Local code (IRC 2018); apply through Building Permits & Inspections before work begins.
Source: Local, IRC 2018 · Verified 2026 by StateDataIndex
Replacing a main sewer line is a major excavation project that often disrupts public right-of-ways and connects directly to municipal utility systems. Because of the sanitary and environmental risks involved, local building departments strictly require permits and inspections before any trench can be backfilled.
With a population of around 105,950 residents, Franklin County generally runs a more streamlined permitting process than major urban hubs.
Code Compliance & Inspections
In high-wind, tornado-prone areas, the Missouri Building Code emphasizes secure fastening and code-compliant installation of new work.
Concurrent Permits & HOAs
For Franklin County residents, we highly recommend reviewing your neighborhood HOA covenants before paying any municipal fees. Often, homeowners associations maintain stricter rules regarding materials and dimensions for your Sewer Line Replacement than the county itself.
Zoning & Cost Factors
Missouri exhibits a sharp divide between highly regulated urban zoning in St. Louis and Kansas City, and virtually unzoned rural counties in the Ozarks. Fortunately, Missouri maintains relatively builder-friendly regulations, keeping base permit fees competitive.
Permit fees in Franklin County
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Franklin County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Building Permits & Inspections ((636) 583-6384). If you have paid for a permit here, you can add it here to help others.
Franklin County Building Department
Office: Building Permits & Inspections
Address: 400 E Locust St, Union, MO 63084, USA
Phone: (636) 583-6384
Source: official Franklin County government records. Hours and procedures can change — call ahead to confirm.
How to Apply in Franklin County
In Franklin County, you or your contractor typically submit blueprints and a property survey to the local building department. Call ahead to confirm hours and accepted payment methods.
Sewer Line Replacement Requirements in Franklin County
Typical Submittal Package
When applying for a Sewer Line Replacement permit, you or your contractor will generally need to submit the following documentation for the city's review:
- Plumbing schematic and trenching plan
- Master plumber license verification
- Right-of-way excavation permit (if digging near the street)
- Utility marking confirmation (Call Before You Dig)
Standard Ordinances & Processing Time
Key code points for a Sewer Line Replacement in Franklin County: Trenches must remain open until a city plumbing inspector visually verifies the pipe slope, material, and connection integrity to the municipal sewer main.
Typical processing time for a jurisdiction of this size: 10 to 14 business days.
Frequently Asked Questions
What happens if I build a Sewer Line Replacement without a permit in Franklin County?
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Can a homeowner pull their own Sewer Line Replacement permit in Missouri?
Yes. Missouri generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Missouri Building Code.
How much does a Sewer Line Replacement permit cost in Franklin County?
Permit fees vary by jurisdiction and by your project's valuation, so Franklin County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
How long does it take to get a Sewer Line Replacement permit in Franklin County?
Based on the size of Franklin County, the typical processing time is 10 to 14 business days. Times vary with the season and the building department application volume.
Where do I apply for a Sewer Line Replacement permit in Franklin County?
You can apply through the Building Permits & Inspections or online via the county permit portal. For questions, call (636) 583-6384.
Help the Franklin County Community
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