Below you can find links to Modular Home Building Codes and Building Authorities for the state of Washington.
Additional Resources
Washington has adopted a statewide building code, State Building Code (SBC).The building, plumbing, mechanical, electrical and fire codes are mandatory minimum codes for all jurisdictions. The SBC is incorporated in the Washington Administrative Code (WAC) in several chapters (see below for specific numbers).
Washington updates its codes every three years.
Code Alert: The adoption of the 2009 International Building, Residential, Mechanical and Fire Codes and the 2009 Uniform Plumbing Code, with state amendments, will be effective on July 1, 2010, along with amendments to the Washington State Energy Code.
Washington Modular Homes Building Codes
Code Type |
Code Model |
Amendment Contact |
Building/Dwelling Code |
IBC 2006 (State Building Code, WAC Chapter 51-50) |
Online |
Structural Code |
IBC 2006 (State Building Code, WAC Chapter 51-50) |
Online |
Plumbing Code |
UPC 2006 (State Building Code, WAC Chapter 51-56 and 51-57) |
Online |
Mechanical Code |
IMC 2006 (State Building Code, WAC Chapter 51-52) |
Online |
Electrical Code |
NEC 2005 [Laws, Rules & Reg. For Installing El. Wires & Equip. (WAC) 296-46b] |
Online |
Fire/Life Safety Code |
IFC 2006 (State Building Code, WAC Chapter 51-54 |
Online |
Accessibility Code |
ADAAG (State Building Code, WAC Chapter 51-40) |
Online |
Energy Code |
2006 Washington State Energy Code (State Building Code, WAC Chapter 51-11) |
Online |
Elevator Code |
AMSE A17.1-2004 |
Online |
Gas Code |
IMC 2006 (NFPA 58 & 54) (State Building Code, WAC Chapter 51-42) |
Online |
Boiler Code |
ASME Boiler & Pressure Vessel Code 1998; NBIC 1995 with addenda |
Online |
Other Codes |
Ventilation and IAQ Code (State Building Code, WAC Ch. 51-13) |
Washington Building Authorities (BA)
Building Authorities are those government officials who are the final authority on questions in a particular area (or jurisdiction).
Functional Area |
Contact |
Structural |
Phone: (360) 725-2969
Fax: (360) 586-9383 | Plumbing |
Phone: (360) 725-2964
Fax: (360) 586-9383 | Mechanical |
Phone: (360) 725-2964
Fax: (360) 586-9383 | Electrical |
Electrical Inspection, Dept. of Labor & Industry
Phone: (360) 902-5249 Fax: (360) 902-5292 | Accessibility |
Phone: (360) 725-2964
Fax: (360) 586-5880 | Energy |
Phone: (360) 725-2964
Fax: (360) 586-9383 | Planning/Land Use |
Growth Management Services
Phone: (360) 753-2222 | Environmental |
Department of Ecology
Phone: (360) 407-6000 | Health Department |
Department of Environmental Health
Phone: (360) 236-3000 | Fire Marshal |
State Fire Marshal
Phone: (360) 753-0404 | Forestry/Parks |
Department of Natural Resources
Phone: (360) 902-1000 | Transportation |
Department of Transportation
Phone: (360) 705-7000 | Boiler Inspector |
Phone: (360) 902-5270
Fax: (360) 902-5292 | Elevator Inspector |
Chief Elevator Inspector, Dept. of Labor & Industr
Phone: (360) 902-6128 Fax: (360) 902-6132 |
Washington Municipalities
Modular Home Building Codes are also available for the following municipalities within Washington:
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