Permit Requirements for Redondo, Washington
For Plumbing projects in Redondo, determining the correct permitting authority depends on whether the project site is located within the incorporated city limits or in an unincorporated area of King County.
Authority Having Jurisdiction (AHJ)
Most jurisdictions require permits for Plumbing work to ensure safety and code compliance. The governing body responsible for issuing these permits varies by specific location:
General Plumbing Guidelines
Permits are usually required for new installations, structural modifications, or major repairs. While minor maintenance or cosmetic updates may be exempt, landowners should always verify local codes before work begins.
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If you have found a direct link to a permit portal or a specific local ordinance for Plumbing in this area, please submit an update.
Because Redondo is located within King County, the following broader county regulations may also apply to your project:
Washington, King County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas
King County Plumbing Permit Requirements
In King County, Washington, plumbing and gas piping installations, relocations, or alterations require a permit. Public Health - Seattle & King County has jurisdiction over permits for Seattle and unincorporated areas of King County. If your property is located within another incorporated city in King County, you will need to obtain permits from that city's building department. You can verify jurisdiction using the King County Parcel Viewer.
Unincorporated Areas
For properties in unincorporated King County, the Department of Local Services, Permitting Division, is responsible for issuing land use, building, and fire regulatory permits. Plumbing and gas piping permits for these areas are handled by Public Health - Seattle & King County.
Permit Application Process
Permits can generally be applied for online through the Public Health Permit Center or the King County Permitting Portal. Some applications may require submission via email or in person.
When applying for a plumbing permit, you will need to provide information such as the project location, property owner details, parcel number, building use, and occupancy type. If a professional plumber is hired, they must be a licensed contractor. Homeowners may be able to perform their own plumbing work on their residence, but must adhere to specific instructions.
Certain projects, particularly those involving specific occupancies or complex systems, may require a plumbing plan review. The plans can be submitted by anyone, but the permit will only be issued to the licensed plumbing contractor.
Effective March 15, 2024, projects in unincorporated King County are required to be designed using the 2021 Washington State construction codes, unless the building permit was vested in a previous code cycle.
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:
- Washington State Building Code Council (SBCC): This council is responsible for the adoption, maintenance, and amendment of the state building codes, including the Washington State Plumbing Code. They regularly review and update these codes to ensure they remain consistent with state safety and health standards.
- Washington State Department of Labor & Industries (L&I): This department is the primary authority for the administration of plumber certification, plumbing contractor licensing, and enforcement of professional standards. While the SBCC sets the technical code, L&I manages the workforce and business regulations associated with the plumbing trade, as outlined in RCW Chapter 18.106 and WAC Chapter 296-400A.
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