O'Brien360

Transforming the way we build and live, one building at a time

O’Brien360 is a 30-year-old sustainability consultancy based in Seattle and dedicated to integrating sustainable building expertise, thoughtful analysis, and a collaborative approach toward catalyzing positive outcomes in the built environment. 

We provide comprehensive services that include consulting, certification, building performance, and commissioning. We work alongside our clients to ensure that new and existing buildings reach the highest possible level of sustainability, to deliver immediate and long-term benefits, such as:

• improved rate of return
• savings in operations and maintenance
• enhanced longevity 
• greater marketability due to energy efficiency, occupant comfort, and health

From project conception to occupancy, O’Brien360 delivers value and performance to clients across the entire project arc. Our clients include building and portfolio owners,  architects, government agencies, and affordable housing developers among others.