Building Codes

The 2018 International Building Codes and the Washington State Energy Codes
are in effect as of February 1st, 2021.
All submitted building permits must meet the new 2018 codes.

City of Langley Climatic & Geographic Design Criteria

City of Langley Adopted Building Codes

Local and State Amendments apply.

2018 International Building Code (IBC)

Appendix E, Supplemental Accessibility Requirements
Appendix J, Grading

2018 International Residential Code (IRC)

Appendix E, Manufactured Housing Used as Dwellings
Appendix Q, Tiny Houses
Appendix R, Light Straw-Clay Construction
Appendix S, Straw-bale Construction

2018 International Existing Building Code (IEBC)
2018 International Mechanical Code (IMC)
2018 International Fuel-Gas Code (IFGC)
2018 International Fire Code (IFC)

Appendix B, Fire-Flow Requirements for Buildings
Appendix C, Fire-Hydrant Locations and Distribution
Appendix D, Fire Apparatus Access Roads

2018 Uniform Plumbing Code (UPC)

Appendix A, Recommended Rules for Sizing the Water Supply System
Appendix B, Explanatory Notes on Combustion Waste and Vent Systems
Appendix I, Installation Standards for PEX Tubing Systems for Hot- and Cold-Water Distribution
Excluding: Chapters 12 and 15; and those requirements of the Uniform Plumbing Code relating to venting and combustion air of fuel-fired appliances as found in Chapter 5; and those portions of the code addressing building sewers.

2018 Washington State Energy Code (WSEC) (also see Chapters 51-11C and 51-11R WAC)
ICC A117.1-2009 (Accessibility Code)
2018 International Property Maintenance Code (IPMC)

Helpful Code Links