Missouri, Cass County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Cass County, Missouri Plumbing Permit Requirements

The Cass County Building Codes Department is responsible for enforcing building codes in the unincorporated areas of Cass County, Missouri. These codes apply to new construction, alterations, additions, remodeling, repairs, and changes in use for existing buildings.

For plumbing work, a private sewage disposal permit or exemption permit is required if plumbing fixtures are to be installed. This permit is not necessary if only floor drains are being installed; however, any other plumbing work will require it.

The county has adopted various International Codes, including the International Plumbing Code (IPC).

Permit applications must be submitted in person to the Cass County Building Codes Department.

Key Requirements for Permits:

A completed Building Permit Application Questionnaire.
A complete and legible legal description of the property.
A private sewage disposal permit or exemption permit (if installing plumbing fixtures, excluding floor drains only).
A plot plan prepared according to the plan requirements.
A complete set of plans detailing all required information.
Any necessary engineered plans or details.
The application fee.

Work cannot commence until a permit has been issued.

The Cass County Building Codes Department can be contacted at (816) 380-8134 between 6:30 AM and 3:00 PM, Monday through Friday (excluding holidays).

Properties in Unincorporated Areas

The Cass County Building Codes Department specifically administers building codes for properties in the unincorporated areas of Cass County, Missouri.

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Missouri, including Cass County.

Missouri Plumbing Legislation, Codes, and Guidelines

State-Level Plumbing Codes and Legislation in Missouri

Missouri does not currently have a single, mandatory statewide plumbing code or a statewide plumbing licensing board. Plumbing regulation, including the adoption of building codes and the issuance of professional licenses, is handled at the local level by individual municipalities and counties. Consequently, the specific code edition (such as the International Plumbing Code or Uniform Plumbing Code) and the requirements for plumbing work vary significantly depending on the jurisdiction where the project is located.

While there is no overarching state-level enforcement for general plumbing, state statutes (such as Chapter 341 of the Missouri Revised Statutes) provide the legal framework that allows counties and cities to establish their own departments of plumbing inspection and adopt local regulations to protect public health and safety. Contractors and property owners must consult their local building department or code enforcement office to determine the specific codes, permit requirements, and licensing standards applicable to their project.

Resources to Learn More

Select a City in Cass County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

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