WABO Accredited Code Official Program

WABO recognizes and supports the jurisdictions, agencies, and individuals responsible for safeguarding life, health and property and promoting public welfare through the administration and enforcement of the codes. WABO is committed to enhancing and increasing the professional administration of codes by promoting and supporting the qualifications, technical knowledge and credentials of code officials.
WABO believes that local jurisdictions’ code enforcement responsibilities are best administered by qualified code officials. WABO believes local authorities should appoint qualified individuals and that recognized qualifications for all code enforcement personnel should be applied throughout the state. 
In response to concerns of the state legislative bodies, WABO supports and encourages professional accreditation for code officials to demonstrate qualification to administer state and local codes. Towards that end, WABO proposes to establish a WABO Accredited Code Official Program.
The accreditation program demonstrates that the accredited code official has passed a WABO approved examination that covers Washington laws related to state building codes including, but not limited to, administrative procedures, architectural barriers, and Washington amendments to the administrative codes. It is intended that each jurisdiction employ a building official that meets certain minimum requirements, as specified herein. WABO is committed to supporting individual jurisdictions throughout the state in acquiring WABO accreditation.

The RCWs and WAC covered in the ACO exam:

  • RCW 18.27
  • RCW 19.27
  • RCW 19.27A
  • WAC 51-04

This accreditation program is voluntary and seeks to validate the individual requirements to work as a code official in the State of Washington. It does not intend to create separate classes of members within the organization, depending on whether one is accredited or not. The accreditation of building officials is encouraged to provide recognized professional credentials for code officials, qualification standards for code enforcement agencies, and greater safety for citizens.

Accredited Code Official Application Packet 


Gary Schenk, CBO, ACO
Retired - City of SeaTac
C. Andrew Higgins,MCP, CBO, ACO
City of Seattle
Michael Barth, MCP, ACO
CodePros, LLC
Willie Hill, CBO, ACO
BHC Consultants 
Trace Justice, CBO, ACO
Snohomish County
Gregory Colvig, CBO, ACO
Retired - City of Pullman 
Mary Kate McGee, CBO, ACO
City of SeaTac
Dave Cantrell, ACO
Retired - Seattle King County Public Health
S. Kelly Mayo, CBO, ACO
Labor & Industries
C. Ray Allshouse, CBO, AIA, ACO
City of Shoreline
Tim Nordtvedt, CBO, ACO
City of Granite Falls
Kurt Aldworth, CBO, ACO
City of Kirkland
David Spencer, CBO, ACO
Jon Siu, PE, SE, ACO
Retired - City of Seattle
Sheila Salerno, CFCO, CBO, ACO
Retired - City of Poulsbo 
Lee Kranz, CBO, ACO
Retired - City of Bellevue 
Thomas Phillips, CBO, ACO
Town of Woodway
Dean Giles, AIA, ACO
City of Spokane
Gary Lampella, ACO
Retired - City of Warden
Sean Carlstrom, CBO, MCP, CFM, ACO
City of Shelton
Stacy Criswell, CBO, ACO
City of Monroe 
Dermott Murphy, CBO, MCP, ACO
City of Spokane
Brian Smith, CBO, ACO
City of Camas

David Swasey, CBO, ACO 
City of Bothell

Ryan Mumma, CBO, ACO
City of Bellevue
James Tumelson, CBO, MCP, ME, ACO 
City of Edgewood
LG Nelson, CBO,ACO
City of Chehalis 

Andie Lorenz, CBO, ACO
Adams County 


Join your colleagues and apply to become an ACO today!