Qualified Experts Solving Big Challenges

We look at each project with fresh eyes focused on achieving high quality, great relationships, and a sustainable future.

See our markets

Broad Services Backed by an International Team

From MEP, structural, and civil engineering to commissioning, technology, and more, our international talent pool is deep. But we know that local, responsive service is critical to your success.

See our services

Complex Projects, Stronger Relationships

We build value and make our clients look good by investing in consistent, long-term relationships. And since we build for the long-term, we have a team turnover rate well below the industry average.

Meet our team Build your career

Our Passion
Powers Your Success

3D/Virtual Reality Design

Salas O’Brien uses 3D and virtual reality to help its clients empower their decision-making.

How we do it

Commissioning for a Better Project

Why is commissioning required by more and more jurisdictions? What value does it add?

Learn more

Change Orders

Why our change orders are one third of industry average.

Get the details

Complex Projects Are Where We Shine Brightest

Our time-tested process and people-first approach have reliably solved client challenges since 1975.

Our Awards

Our Insights

Visit our blog

DPB Engineers Joins Salas O’Brien, Broadens Engineering Services for Healthcare Sector

California-based DPB Engineers has joined the company. This further strengthens our services to the healthcare sector and creates a combined firm of more than 55 offices with over 1,550 team members and 370 registered professionals.
Read more

Principal Mike Walters to Present Renewable Energy Projects for Department of Energy’s Better Buildings Webinar

Salas O’Brien Principal Mike Walters will present our renewable energy projects at Princeton University and Western Wisconsin Baldwin Hospital on the US Department of Energy’s Better Building webinar series on June 14. “Going All-Electric in Large-Scale Systems” will explore leveraging large-scale heat pump systems—including geothermal—to decarbonize central plants supporting commercial buildings and campuses. The discussion […]
Read more