Adopted Codes

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IBC	2021 International Building Code	NEC	2023 Washington Cities Electrical Code (WCEC) and by inclusion in the WCEC, the 2023 National Electrical Code (NEC), are adopted and effective April 1, 2024.
IRC	2021 International Residential Code	IPC	2021 International Performance Code
IMC	2021 International Mechanical Code	IPMC	2021 International Property Maintenance code as amended by the City of SeaTac
UPC	2021 Uniform Plumbing Code	IEBC	2021 International Existing Building Code
IFC	2021 International Fire Code	Sound Code	SeaTac Sound Transmission Code; SMC 13.240
IFGC	2021 International Fuel Gas Code	ENERGY	2021 Washington State Energy Code
NFPA 54	2021 National Fire Protection Association-National Fuel Gas Code	ICC/ANSI A-117.1	2021 International Code Council/American National Design Institute-Accessibility Standards
NFPA 58	2021 National Fire Protection Association-Liquefied Petroleum Gas Code	NPDES	National Pollutant Discharge Elimination System - Erosion Sedimentation Control and Soil Amendment Standards

View the state amendments to the adopted codes and the 2021 International Codes.

The 2021 Edition of the International Building Code, hereafter IBC, as adopted by the State Building Code Council in Chapter 51-50 WAC, as published by the International Code Council, Inc. (ICC) including ICC A117.1-2009.

The 2021 Edition of the International Residential Code, hereafter IRC, as published by the International Code Council, Inc. (ICC), and as adopted by the State Building Code Council in Chapter 51-51 WAC.

The 2021 Edition of the International Mechanical Code, hereafter IMC, as published by the International Code Council, Inc. (ICC), and as adopted by the State Building Code Council in Chapter 51-52 WAC. For gas piping and venting, the 2021 Edition of the International Fuel Gas Code, as published by the International Code Council, and as adopted by the State Building Code Council in Chapter 51-52 WAC, is hereby adopted. The provisions shall apply to the installation of all materials and equipment utilizing natural gas except those regulated by the International Residential Code and those utilizing LPG.

The 2021 Edition of the Uniform Plumbing Code, hereafter UPC, as published by the International Association of Plumbing and Mechanical Officials (IAPMO), and as adopted by the State Building Code Council in Chapter 51-56 WAC. At the request of the permit applicant, the 2018 International Plumbing Code, hereafter IPC, may be used as an approved alternate code.

The 2021 edition of the Washington State Energy Code, as adopted by the State Building Code Council in Chapter 51-11 WAC, is hereby adopted.

The most current edition of the Washington Cities Electrical Code is hereby adopted and is available on the City of SeaTac website by clicking here

The 2021 Edition of the International Fire Code, as adopted by the State Building Code Council in Chapter 51-54A WAC, and as published by the International Code Council.

The International Property Maintenance Code, 2021 edition, as published by the International Code Council, is hereby adopted.

The SeaTac Municipal Code may be viewed at http://www.codepublishing.com/wa/seatac for amendments to all of the above referenced codes.

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