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

Lewis County, Washington Plumbing Permit Requirements

In Lewis County, Washington, obtaining a plumbing permit is generally required for any work involving the installation, alteration, or repair of plumbing systems. This includes work on appliances and furnaces. The county has adopted the 2018 International Codes, which became effective on July 1, 2021. Separate plumbing permits are required unless specifically exempted by code.

County Jurisdiction and Unincorporated Areas

Lewis County's Community Development department handles building and safety permits, including those for plumbing. For properties located in unincorporated areas of Lewis County, the county's regulations and permit requirements apply directly.

Permit Process and Requirements

Permit Application: A completed building permit application is required, which should indicate the proposed occupancy of all parts of the building and site.
Building Plans: Construction plans must be submitted and will be reviewed for compliance with current building codes. These plans should include details such as foundation plans, floor plans showing all plumbing fixtures, wall cross-sections, exterior elevations, and roof plans.
Master Site Review (MSR): For new development, the MSR is the initial step. This review ensures the proposal meets county zoning and critical areas regulations and identifies all necessary county, state, and federal permits. After MSR approval, applications for septic, fill & grade, and building permits can be submitted.
Processing Time: For single-family residential permits, issuance typically takes two to four weeks. Commercial or industrial buildings, and multi-family residential permits may require a minimum of four weeks. Processing times can be longer during peak building seasons (May through October).
Permit Expiration: Permits are valid for 180 days (6 months) after issuance and remain valid for 180 days after each inspection. Extensions may be granted by the Building Official if requested before the expiration date.
Enforcement: Failure to obtain a required permit may result in enforcement actions by Lewis County.

Exemptions

Certain types of work may be exempt from permit requirements. These can include one-story detached accessory structures under a certain square footage (200 sq ft for residential, 120 sq ft for non-residential), fences not exceeding 7 feet in height, and retaining walls not over 4 feet in height. However, even if work is exempt from a permit, it must still comply with all applicable codes and ordinances. Specifically, electrical, plumbing, or mechanical activities are generally not exempt from permit requirements, even if other aspects of a project are.

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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.

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

Lewis County, Washington Plumbing Permit Requirements

County Jurisdiction and Unincorporated Areas

Permit Process and Requirements

Exemptions

Resources to Learn More

Washington Plumbing Legislation, Codes, and Guidelines

Plumbing Codes and Legislation in Washington State

Primary State Agencies

Resources to Learn More

Select a City in Lewis County

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