Great people to work with. Always have had a great experience. Jonathan has designed big projects like a whole house or worked with me to just size a Beam. The work is done promptly and price is always fair. On Site is my go to for all engineering needs.

We have worked with Jonathan for years now on multiple residential projects. He has always performed to the highest standards with on time results. We will definitely be working with On Site for our future projects.

Absolutely love working with Dan at On Site Structural Engineering. As a custom home builder time and cost are always of the essence and Dan and his team are incredibly responsive and always try to find ways to value engineer what is needed. Ive worked with a dozen or more different structural engineers in the past and Dan and On Site Structural Engineering have met and exceeded my expectations in comparison to others I have worked with where turnaround time can be weeks instead of days . Would love to continue working with them on many projects in the future. Keep up the good work guys!

ON SITE is out of sight. On Site was timely, professional and provided great work product. We upcycled a container for a garage addition and Jonathan at On Site helped us navigate the Boulder County permit process as well as providing us with the significant structural renderings associated with the project.

I had a small residential remodel job that needed engineering input for permitting. Jonathan was responsive and did a great job!

Extremely helpful. Needed some sound advice backed by accurate calculations and On Site delivered at an extremely fair price in record time. Thank you!

I interned with the engineers of On-Site for nearly two years, and in that time I worked with a brilliant group of guys who took on difficult structural problems in a timely and professional manner. They are a pleasure to work with, and are willing to challenge themselves in order to actualize abstract ideas from a client. I would highly recommend.

On Site Structural Engineering is an amazing firm and my go-to structural engineers. They always have a great solution to very difficult project problems and are so friendly to work with!