City Building Permits

Marthasville, MO - 2026 Building Permit Guide

How to apply for a building permit in Marthasville, Missouri. Permit authority, application steps, fees, and inspection requirements.

Missouri Warren County Updated March 2026

Permit Authority

City permit authority applies inside Marthasville city limits. Public sources found here are stronger on utility, street, floodplain, and mobile-home-park construction permits than on a broad standalone building-permit portal

Department
City of Marthasville City Clerk / City code administration
Address
402 East Main Street, Marthasville, MO 63357
Phone
636-433-5554

Online Permit Portal

Application Process

  1. Identify whether the work is a utility connection, street/driveway project, floodplain development, or mobile home park related construction
  2. Pull the applicable city form from the Licenses and Permits page or code chapter
  3. Submit the form to City Hall or the City Clerk with any required plans, drawings, or supporting documents
  4. Obtain any required external approvals, such as DNR, Corps of Engineers, or EPA, before final city approval when applicable
  5. Receive permit approval and complete any required inspections

Typical processing time: Not stated publicly

Source: City of Marthasville City Clerk / City code administration

General Requirements

Water and sewer main extensions or service connections require a construction permit. Streets or driveways serving two or more residences or any commercial or industrial facility require a construction permit. Mobile home parks require a city permit. Floodplain development also requires a permit

Required Documents

  • When a permit is required: Water and sewer main extensions or service connections require a construction permit. Streets or driveways serving two or more residences or any commercial or industrial facility require a construction permit. Mobile home parks require a city permit. Floodplain development also requires a permit
  • Required documents: City forms, scale drawings for street permits, and related supporting approvals for utility and floodplain work
  • Permit validity/expiration: Not clearly stated in the captured text for the general permit types. Mobile home park permits appear to remain valid while compliant, but no single public validity rule was located
  • Owner-builder rules if available: Not located in the captured text
  • Contractor license requirements: Not located in the captured text
  • Building code adopted: Chapter 500 building regulations and related city ordinances. The chapter references seismic design requirements under Missouri law and specific city utility and street standards
Permit validity
Not clearly stated in the captured text for the general permit types. Mobile home park permits appear to remain valid while compliant, but no single public validity rule was located
Building code
Chapter 500 building regulations and related city ordinances. The chapter references seismic design requirements under Missouri law and specific city utility and street standards
Owner-builder
Not located in the captured text
Contractor requirements
Not located in the captured text

Fees

Minimum permit fee
Street construction permit fee is $20.00; mobile home park permit fee is $100.00; some utility inspection fees are higher
Plan check fee
Not stated as a separate fee in the captured text
Permit fee formula
Mostly flat fees by permit type in the excerpts found
Reinspection fee
Final inspection noncompliance for water/sewer connections can lead to fines up to $500 and/or 90 days in jail under the code excerpt
Payment note
The public forms and ordinance references do not show an online payment flow in the captured text

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the City of Marthasville City Clerk / City code administration to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

  • Contact City Hall / City Clerk; some inspections are tied to city personnel review and final approval ()
Inspection hours
City Hall hours are Monday through Friday, 8 a.m. to 4 p.m

Typical inspection sequence: Submit application, obtain outside agency approvals if needed, city permit issuance, city inspection, and final approval where applicable

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the City of Marthasville City Clerk / City code administration before applying.

Frequently Asked Questions

Marthasville Building Permit FAQ

Do I need a building permit in Marthasville, MO?
Water and sewer main extensions or service connections require a construction permit. Streets or driveways serving two or more residences or any commercial or industrial facility require a construction permit. Mobile home parks require a city permit. Floodplain development also requires a permit
How much does a building permit cost in Marthasville, MO?
The minimum permit fee is Street construction permit fee is $20.00; mobile home park permit fee is $100.00; some utility inspection fees are higher. Fees are calculated as: Mostly flat fees by permit type in the excerpts found. Plan check fee: Not stated as a separate fee in the captured text.
How do I apply for a building permit in Marthasville, MO?
1. Identify whether the work is a utility connection, street/driveway project, floodplain development, or mobile home park related construction 2. Pull the applicable city form from the Licenses and Permits page or code chapter 3. Submit the form to City Hall or the City Clerk with any required plans, drawings, or supporting documents 4. Obtain any required external approvals, such as DNR, Corps of Engineers, or EPA, before final city approval when applicable 5. Receive permit approval and complete any required inspections
How long does it take to get a building permit in Marthasville, MO?
Typical processing time is Not stated publicly.
What work is exempt from building permits in Marthasville, MO?
The following work is generally exempt: No public exempt-work list was found in the captured text for general building work; The code excerpts reviewed focus on utility, street, floodplain, and mobile home park permits.
How do I schedule a building inspection in Marthasville, MO?
Inspections can be scheduled via: Contact City Hall / City Clerk; some inspections are tied to city personnel review and final approval.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.