Permit Requirements for Colton, Washington
For Plumbing projects in Colton, determining the correct permitting authority depends on whether the project site is located within the incorporated city limits or in an unincorporated area of Whitman 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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Because Colton is located within Whitman County, the following broader county regulations may also apply to your project:
Washington, Whitman County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas
Whitman County Plumbing Permit Requirements
Whitman County, Washington, handles building permits, including those for structural plumbing and mechanical work, for properties located in unincorporated areas of the county. The Building & Development Division is responsible for issuing these permits, conducting plan reviews, and performing inspections. If your property is within an incorporated city in Whitman County, you will need to contact that city's building department for permit requirements.
- The Building & Development Division of Whitman County is responsible for issuing building permits in unincorporated areas.
- This includes permits for structural plumbing and mechanical work.
- Personnel in this division handle plan reviews, building inspections, and maintain building records.
- For properties within incorporated cities, the respective city's building department is the authority for permits.
Rules for Properties in Unincorporated Areas
For properties in unincorporated Whitman County, the State Building Code, adopted February 1, 2021, is in full effect. This code includes the Uniform Plumbing Code (UPC) with its amendments. The county also adopts specific versions of the International Building Code (IBC), International Residential Code (IRC), International Mechanical Code (IMC), and International Fire Code (IFC). The Building & Development Division is the point of contact for obtaining permits and information regarding these codes and their application to your project.
- The State Building Code, adopted February 1, 2021, applies to unincorporated areas of Whitman County.
- This includes the 2018 Uniform Plumbing Code (UPC) and its amendments.
- The county also adopts other relevant codes such as the IBC, IRC, IMC, and IFC.
- Permit applications and questions can be directed to the Building & Development Division.
- The minimum permit fee is $95.00, and projects with valuations under $800 do not require a building permit but must still comply with applicable codes.
- A plumbing permit has a base fee of $95.00, and is not charged State Building Code Fees.
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