Founded in 1909 and headquartered in Bellevue, Washington, the Master Builders Association of King and Snohomish Counties (MBAKS) is the nation’s oldest and largest local homebuilders association, serving every area of the residential homebuilding industry. OUR MISSION We commit to ensure that all people can attain housing. We pledge to make positive impacts through our advocacy, community, and philanthropic outreach efforts. We will remain the regional leader in residential and green building advancements. Our duty is to make certain everyone has access to a healthy and productive place to call home.