One Way Plumbing Services
One Way Plumbing is a design build plumbing contractor. Most of our work has been for multi-family and mixed-use projects. Our plumbing design and management team
have been working together for over 20 years and know how to get the job done right.
We are active members of IAPMO (International Association of Plumbing and Mechanical Officers). IAPMO protects the public's health and safety by working in
concert with government and industry to implement comprehensive plumbing and mechanical systems. We are also current members of the Master Builders Association
of King and Snohomish Counties.