CM at-risk keeps the owner in a direct contract with the designer while a construction manager advises during design and then builds under a guaranteed maximum price. Design-build puts design and construction under a single contract for one point of accountability and a faster schedule. Choose CM at-risk for design control with cost certainty; choose design-build for speed and simplicity.
How CM at-risk works
Under construction-manager-at-risk (CMAR), the owner holds two relationships: one with the architect/engineer and one with the construction manager. The CM joins early to provide preconstruction services — budgeting, constructability review, and schedule input — then transitions into the builder, typically committing to a guaranteed maximum price (GMP). From that point the CM holds the trade contracts and carries the risk of delivering within the GMP.
The appeal: the owner keeps a direct line to the designer and gets independent cost and schedule advice during design, with a single party accountable for construction cost once the GMP is set. It's a common fit for school districts and public agencies that want to stay close to the design while still getting cost certainty.
How design-build works
In design-build, the owner signs one contract with a single entity responsible for both design and construction. That team overlaps the two phases — construction can begin on early packages while later design is still being finished — which compresses the overall schedule and removes the gap (and the finger-pointing) between designer and builder.
The appeal: speed, a single point of accountability, and fewer change orders that arise from design-construction misalignment. It's a frequent choice for owners who value a fast, predictable delivery and are comfortable giving the design-build team more control over design decisions.
Side-by-side
- Contracts: CM at-risk = two (designer + CM). Design-build = one.
- Design control: CM at-risk keeps the owner directly engaged with the designer. Design-build hands more design responsibility to the team.
- Schedule: Design-build is usually faster because phases overlap. CM at-risk is sequential but still benefits from early CM input.
- Cost certainty: CM at-risk locks a GMP once design is far enough along. Design-build can offer early price certainty because one team controls both sides.
- Accountability: Design-build offers a single throat to choke. CM at-risk splits design and construction responsibility.
Which should you choose?
There's no universal winner — it comes down to your priorities and your procurement rules. If keeping a direct relationship with your architect and getting independent cost oversight matters most, CM at-risk is likely your method. If speed and a single accountable partner matter most, design-build probably fits better. Public owners should also confirm which methods their procurement statutes and funding sources allow before deciding.
R. Chavez Construction delivers both. We're glad to walk your team through the trade-offs for your specific project before you commit.
General information, not legal advice. Allowable delivery methods for public projects vary by statute and funding source — confirm what applies to you.