Master Builders Association is the nation's largest local homebuilders association, serving the Greater Seattle area and all of King and Snohomish counties. If you're looking to buy, build, remodel or maintain your home, we're the trusted source for industry professional referrals and practical information on getting the job done right.

Built Green is an environmentally friendly, nonprofit residential building program of the Master Builders Association, developed in partnership with King and Snohomish counties and other Washington agencies to set standards of excellence that make a significant impact on housing, health, and the environment and are readily achievable today.

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.