Kennewick, Washington Plumbing Local Permit Ordinances and Codes

Kennewick, Washington Plumbing Permit Ordinances

The City of Kennewick's Building Safety Division is the Authority Having Jurisdiction (AHJ) for plumbing permit ordinances. They are responsible for plan review, inspections, and code interpretation related to building safety, including plumbing systems.

Kennewick utilizes the 2021 Uniform Plumbing Code, as amended by Washington State, for its plumbing regulations.

Permit Requirements and Fees

Zoning and Other Nuances

Resources to Learn More

Because Kennewick is located within Benton County, the following broader county regulations may also apply to your project:

Washington, Benton County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Benton County, Washington Plumbing Permit Requirements

Benton County, Washington, has specific requirements for plumbing permits, particularly for properties located in unincorporated areas. The county's Building and Safety Division oversees these regulations.

Jurisdiction and Unincorporated Areas

Benton County is responsible for issuing building permits for properties situated in unincorporated areas of the county. If a property is within an incorporated city, that city's building department will handle permit applications, not the county.

General Plumbing Permit Requirements

Exemptions

While permits are generally required for new plumbing work, some exemptions may apply. For instance, detached accessory structures like tool sheds or carports that do not exceed 200 square feet may be exempt from building permits. However, permits will still be required for new plumbing, electrical, or HVAC work, even for these structures.

Additionally, installations on residential or farm property owned by the applicant or an immediate family member may be exempt from licensing requirements under specific state regulations.

Permit Application Process

The application process typically involves submitting a completed application form, which may include details about the job site, applicant information, property owner information, and a description of the work to be performed.

Fees for plumbing permits are based on the type of installation and equipment value. A fee schedule outlines costs for various scenarios, such as new residential installations with a specified number of bathrooms and kitchens, or remodel/alteration work.

Resources to Learn More

The following statewide building codes and regulations apply universally to all jurisdictions within Washington:

Washington Plumbing Legislation, Codes, and Guidelines

Plumbing Codes and Legislation in Washington State

The state of Washington regulates plumbing systems through the adoption of the 2021 Uniform Plumbing Code (UPC), which is published by the International Association of Plumbing and Mechanical Officials (IAPMO). This model code is adopted by reference and modified by state-specific amendments to create the Washington State Plumbing Code, codified under Chapter 51-56 of the Washington Administrative Code (WAC). These regulations are established under the authority of the Revised Code of Washington (RCW) Chapter 19.27, which governs the State Building Code.

Primary State Agencies

Two primary state entities oversee the plumbing regulatory framework in Washington:

It is important to note that while the state sets the minimum standards, local jurisdictions (cities and counties) are responsible for issuing permits and conducting inspections. Local authorities may also adopt additional, stricter amendments to the state code.

Resources to Learn More

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