Washington, Whatcom County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas
Whatcom County Plumbing Permit Requirements
Whatcom County's Planning and Development Services (PDS) Division handles building and safety matters, including plumbing permits, for properties in unincorporated areas. If your property is located within an incorporated city, that city's building department is responsible for permits, not the county.
For plumbing work, you will generally need a Plumbing Permit or a Mechanical Permit. These are typically stand-alone permits. For non-commercial projects, they usually do not require a Master Application, Land Use permit, or detailed site/building plans.
Applying for Permits
Applications and requests for permits should be submitted electronically. You can use the county's online Customer Service Portal or email the completed application forms as PDFs to [email protected].
For replacement fixtures, you can apply through the online portal. For newly installed fixtures, you will need to complete the appropriate form from the Applications page and submit it electronically.
If you are unsure about the type of application needed for your project, you can contact the Building Services Division at 360-778-5900 or [email protected].
Permit Fees
Plumbing permit fees are based on the type of fixture or work being done. A fee schedule is available, which includes fees for items such as bathtubs, water heaters, and various types of sinks and drains. A 3% technology fee is applied to all permit and application fees.
Inspections
All permitted work is subject to inspections by county staff. Residential projects require inspections as work progresses to ensure compliance with applicable codes.
For inspections, you can schedule them online through the Customer Service Portal. Approved plans, the permit, and an inspection record must be on-site during the inspection.
Resources to Learn More
Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Washington, including Whatcom County.
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