The Construction Manager at Risk (CMAR) project delivery method involves the owner hiring a construction manager early in the building process—typically during the preconstruction phase to serve as a consultant or contractor during the completion of the project. In addition, The CMAR will manage the project throughout each phase, ensuring it stays within budget and on schedule.

Utilizing the Construction Management at Risk approach guarantees the project’s cost at an early stage in the preconstruction phase. Therefore, the CMAR acts as the owner’s agent and is also responsible for cost control. The owner holds a contract with the Architect and the CMAR. If done correctly, the CMAR will provide input to the owner on costs, constructibility, and life-cycle costs prior to the completion of construction documents.

Proven CM at Risk Expertise

Nearly 95% of Trehel’s work volume has been through Partnering, Design/Build, or Construction Management at Risk. This experience has allowed Trehel to develop a cohesive and integrated project approach to meet the demands of the CM@Risk process.

Trehel understands the complexities and dynamics associated with CM@Risk projects. We will leverage our prior experience, knowledge, and depth of the entire team to finalize a strategy that ensures successful project delivery. Our process involves establishing a collaborative environment with the project team and developing a partnering relationship built on trust and mutual respect for the roles and responsibilities of each team member.


You are assured that your project will be in the hands of the most capable team to deliver an innovative and cost-effective project — safely, on time, and within budget.

Our firm has a long history in South Carolina, North Carolina, and Georgia working as a General Contractor. We have delivered more than two billion dollars’ worth of construction services utilizing Design-Build, CM@Risk, or Partnering delivery methods. Our approach is clearly defined as fully integrated. We deliver excellence by keeping customer alignment, preconstruction, scheduling, and project management tied closely together. Our goal is to create an environment that gives everyone confidence that we are providing the best combination of price, quality, and schedule maintenance in a safe manner.


At Trehel, we adhere to a collaborative process that ensures professional respect for all parties. This “Team” approach is extremely critical at the CMAR/Architect/Engineer/Owner level. These entities must understand each person has their role in the process. While the owner ultimately has the final decision-making authority, the CMAR and the Architect, along with Engineers, should have the freedom to provide input. This approach will help foster creativity, optimum solutions, new technology, and new construction methods that may contribute to a better and more cost-effective final product.

The ideal partnership is transparent to all, centered on trust, and a healthy appreciation and respect of each person’s roles and responsibilities. Trehel will maximize our efforts at maintaining these team synergies through our transparency and open book relationship with the owner. In addition, we will continue to provide access to all our quotes and pricing for owner review.

We are committed to our efforts to seek opportunities to provide added value to the project continuously. Trehel understands, appreciates, and respects the roles each team member brings to the table. We will continue to challenge the team with questions to provide constructive ideas for the team to discuss as the design progresses. The ability of the team to be creative by asking questions and making suggestions that affect cost and schedule is a crucial reason for the success and quality demonstrated in our previous CM@Risk and Design-Build experience. We do this with a complete understanding of the owner’s needs and with full respect for the creativity of the Architect’s design.

The best way to build a CM@Risk project is through a team approach and open book accounting. Trehel combines a strong bonding capacity with high-quality construction to create successful project outcomes.

To learn more about the benefits of our CM at Risk project approach, call 1-800-309-7006.

Being open and honest without concern of reprisal or reprimand is the most productive means of managing projects. It is much better to have everyone involved working on any issues that do come up. With Trehel, I feel like I always get the most qualified and professional site superintendents, project managers, and estimators on my projects. There is no question that we are all on the same team with the same goals.
Richard Hubble
The Cliffs

We had a great working relationship with Trehel – everyone on the team was honest and up front re: everything and explained the process in detail. It was nice to walk through the details during the entire building experience (i.e. they held our hand throughout the entire process).
Scott Brand

They took the time necessary to answer questions, explain “the process” over and above my expectations such that I felt totally comfortable with what were about to undertake… we had built multiple residential homes, but never any commercial construction… the education, explanation, and clarity provided by Trehel made our choice a no brainer.
Scott Mason
Clemson Creative Academy

As a Chef and Kitchen designer I have worked with numerous contractors. Trehel was by far the most experienced in my 43 years in the industry. They listened to my concerns and worked with me day by day through challenges. It was an absolute delight to work with the Trehel project team. Total professionals and always looking out for the “owners’ and what they needed.
Alan Scheidhauer
Truist Culinary &
Hospitality Innovation Center

Trehel has always had a great reputation, they were local to us and well known for problem solving.  We had been looking for an opportunity to use them when we came across our project in Athens GA.

Actually, we brought them in late to the process.  We were working with other contractors and struggled to hit our budget needs.  As such, we summoned Trehel’s help to get the project design back within our budget.  Trehel played a critical role with recommendations that would allow us to meet our budget goals and without compromising the overall project.
EJ Mondor
Homes Urban,
100 Prince Mixed-use Development

I worked primarily with Greg Blinston, VP and Senior Project Manager and I can confidently say that his effort made this experience better than I thought was possible. I always felt he was working for me and we were working as a team to complete this project. There was very clear understanding of what the budget included and the timeline of how the project should go was very different from every other contractor I had worked with and a distinction from other contractors.

It is hard to imagine that I could be any happier with the experience with Trehel.  If I ever have another building project, I know Trehel is where I will go and would recommend anyone to use Trehel.
Dr. Patrick Card, MD
Hopewell Dentistry

We had a fourteen-million-dollar renovation project, and we had to trust that Trehel would complete it before the deadline, only five months away. There was no room for error. And Trehel delivered. We couldn’t ask for a better building partner. They truly walk the talk.
Craig Brown
President and Owner
of the Greenville Drive

They definitely asked the right questions and were able to understand and articulate that into a plan that worked for us. They came within the exact penny they said they would. So, if you really map it out, I will say that they met the expectations of quality, price, and timing, but they exceeded expectations for how much we enjoy our building.
Jim Wanner
CEO, Keymark

Every single project that Trehel has completed for the SDOC has been on time and on/below budget. The projects have also been completed just as they were designed with quality work and craftsmanship. No project is done anywhere without day-to-day construction issues that arise. When those have occurred on our projects, Trehel has been quick to resolve the problems and make sure that we are satisfied with the results. Their project managers and superintendents are up front and act with care and integrity.
Dr. Michael Thorsland
Superintendent, School District
of Oconee County

I highly recommend Trehel Corporation as a General Contractor. I have personally worked on a number of construction projects and would say that Trehel Corporation and all their employees have been a true pleasure to work with. If in the future we would want to build again, Trehel Corporation would be the first company I would contact. Please feel free to contact me with any questions or to discuss my experience working with Trehel Corporation.
Mark Jordan
Director of Facilities,
Advent United Methodist Church

It is difficult to explain in words the appreciation I have for the entire team at Trehel.

Our journey together began approximately 2 years ago with the complete renovation of the casual dining space in our Clubhouse. This would be the first of several projects we entrusted to Trehel at Wade Hampton Golf Club. Our projects culminated with the construction of our new employee housing building.

The membership is pleased with all the work and early responses I have heard indicate we have exceeded their expectations. I can say with confidence that Trehel will be my first choice of contractors when we take on future projects.
John Foster, CCM
General Manager/CEO,
Wade Hampton Golf Club

Trehel has been a responsible, trustworthy partner to Blue Ridge Electric for many years. We set high standards, and Trehel has always met or exceeded our expectations on every project. Trehel has also been a good community partner, which as a community-focused organization ourselves, means a lot.
Zachary Hinton
Blue Ridge Electric