Project owners navigating complex capital programs face growing pressure to deliver predictable costs, reliable schedules, and strong safety performance – all while coordinating an expanding network of stakeholders. To understand why this approach matters, it helps to clarify the construction at risk meaning and how it shifts responsibility earlier in the project lifecycle.
Construction manager at risk (CMAR) is a project delivery approach that brings the construction manager into the project earlier than traditional methods and assigns them clear responsibility for delivering the project within agreed cost and schedule parameters. Rather than waiting until design is complete to involve a contractor, owners engage the construction manager during design to provide real-world input on key factors: cost, constructability, risk. The phrase “at risk” reflects a shift in accountability. The construction manager is no longer acting only as an advisor; they’re contractually responsible for delivering the project, typically under a guaranteed price. For owners, CMAR offers a balance between collaboration and control, helping clarify roles while improving predictability across the project lifecycle.
How the CMAR Delivery Method Works
The CMAR delivery method is built around early engagement and continuous collaboration rather than a handoff between design and construction. Owners typically select a construction manager based on qualifications, experience, safety record, and past success on similar projects rather than lowest price alone. This selection often occurs while design is still underway, allowing construction considerations to inform decisions before they’re finalized.
Once engaged, the construction manager works alongside the owner and design team during preconstruction. This phase focuses on aligning scope, budget, schedule, and risk assumptions as design evolves. Cost estimates are updated at multiple stages, reflecting current market conditions rather than relying on a single bid at the end of design. For owners, this means earlier insight into budget pressures and more opportunities to make informed tradeoffs.
A core advantage of CMAR is contractor involvement during design, transforming design development from a linear process into a coordinated effort. Typical preconstruction activities include:
- Progressive cost estimating: Refining estimates at schematic, design development, construction document stages, with each update reflecting labor availability and material pricing, along with market conditions
- Constructability and logistics reviews: Evaluating site access, sequencing, temporary works, and safety planning to prevent conflicts in the field and support efficient execution
- Schedule development and validation: Testing preliminary schedules against procurement timelines, phasing, operational impacts to help identify path dependencies and resource bottlenecks early
- Market and procurement analysis: Assessing long-lead items, subcontractor capacity, labor availability to ensure realistic timelines and reduce supply chain risk
- Risk identification and mitigation planning: Documenting, pricing, addressing known risks through design refinement or contingency planning before they escalate
This structured collaboration ensures that the project progresses smoothly once construction begins, supporting cost control and schedule adherence.
What “At Risk” Means for Cost and Accountability
The “at risk” aspect of CMAR mainly relates to financial accountability. Construction managers agree to complete each project without going over a guaranteed maximum price (GMP). If costs exceed the GMP due to factors within the construction manager’s control, they’re responsible for the overrun — rather than the owner. This arrangement motivates disciplined management of cost, quality, and schedule throughout preconstruction and construction.
GMP development often happens through an open-book process: labor, materials, general conditions, contingencies, and allowances are itemized and reviewed with the owner. Transparency at this stage allows owners to understand how risks are priced and what assumptions are embedded in the budget. It also enables evaluation of tradeoffs between design decisions and materials, along with overall project outcomes.
Owners retain responsibility for defining scope and approving timely decisions, while also managing changes. Late approvals or evolving requirements can still affect costs and schedules. CMAR creates alignment: it incentivizes construction managers to prevent overruns and mitigate risks under their control. Additional benefits include more informed risk discussions and collaborative problem-solving for constructability challenges, along with enhanced predictability in overall project delivery.
Being “at risk” also encourages ongoing monitoring and accountability throughout construction. The construction manager must manage subcontractors, procurement, schedule adjustments, and unforeseen site conditions while remaining within the GMP. This accountability structure supports owners in understanding where cost pressures arise and how changes or delays impact the overall budget. When effectively executed, the CMAR approach strengthens owner confidence in budget performance and schedule reliability, resulting in quality outcomes.
Clearly defining risk responsibilities allows CMAR to improve cost control and transparency, so owners meet project objectives while maintaining accountability for their own decisions throughout the process.
CMAR Compared to Other Construction Delivery Methods
When evaluating construction delivery methods, owners often compare CMAR to traditional and collaborative approaches to understand differences in collaboration, timing, and risk allocation. These distinctions affect project planning and communication, along with predictability.
Design-Bid-Build vs. CMAR
In a design-bid-build vs. CMAR comparison, the timing of construction involvement and accountability are the key distinctions. Design-bid-build separates design and construction into sequential phases, with contractors entering the process only after design is complete. CMAR integrates the construction manager during design, providing early input on cost and constructability, along with scheduling.
Key differences include:
- Timing of involvement: CMAR introduces construction expertise during design, allowing cost and constructability feedback before documents are finalized.
- Cost visibility: CMAR provides continuous insight into evolving costs, helping owners make informed decisions early. Design-bid-build provides budget certainty only after bids are received.
- Change management: Early collaboration reduces the frequency and severity of change orders due to constructability issues or sequencing conflicts.
- Risk allocation: CMAR shifts cost responsibility to the construction manager through the GMP — design-bid-build often leaves the owner accountable for unexpected cost escalations.
- Collaboration and communication: CMAR encourages ongoing dialogue among owner, designer, and constructor, helping to resolve conflicts proactively. Design-bid-build has more segmented communication that sometimes delays problem-solving.
- Flexibility during design: CMAR allows design adjustments to be evaluated for cost and schedule implications before final approvals, reducing downstream disruptions.
CMAR and Other Collaborative Approaches
Compared to other collaborative models, CMAR maintains clear accountability while promoting collaboration. Owners retain authority over design and approvals, along with scope changes, while the construction manager is responsible for execution.
Key characteristics include:
- Owner authority: Decision-making power remains with the owner for design and scope adjustments while leveraging the construction manager’s expertise.
- Contractual accountability: The construction manager is responsible for delivering within the GMP, providing a clear measure of accountability.
- Transparency expectations: Open-book estimating and documented assumptions ensure both parties understand costs and risk allocations, along with contingencies.
- Owner engagement: Preconstruction requires active participation to maximize the benefits of CMAR, especially in evaluating trade-offs and scheduling or procurement decisions.
- Reduced disputes: Early collaboration helps identify and resolve issues before construction, limiting claims and potential project delays.
- Optimized decision-making: Collaborative insights support informed owner choices regarding materials and construction techniques, along with phasing strategies.
CMAR provides a balance between collaboration and control, making it attractive for projects where early involvement of the construction team reduces risk, but the owner doesn’t want a fully integrated delivery model.
Why Owners Choose Construction Manager at Risk
Owners often choose CMAR to address uncertainties earlier in the process: cost, schedule, and constructability. Early engagement with the construction manager allows insight into labor availability, material supply, procurement challenges, and sequencing issues before they escalate. This visibility helps reduce the likelihood of costly change orders and schedule disruptions.
CMAR is especially valuable for projects with operational constraints and phased construction or complex site logistics. Hospitals, universities, manufacturing facilities, and other occupied sites benefit from early planning and coordination. Involving the construction manager early means owners can evaluate design alternatives and assess trade-offs, while optimizing outcomes for safety, cost, schedule, and other important factors.
For organizations managing multiple projects, CMAR aligns well with standardized oversight. When paired with capital program management software, owners gain portfolio-level insight into budgets, approvals, and schedules. This ensures consistent governance across multiple projects and reduces redundancy, while allowing executives to focus on strategic decision-making.
Owners also gain the ability to engage in more data-driven decision-making during preconstruction. Detailed estimates, risk analyses, and scheduling models allow the owner to make more confident choices regarding procurement strategies and subcontractor selection or resource allocation. This level of insight supports predictability and risk mitigation that’s especially important for large, complex projects with tight timing and sequencing.
CMAR allows owners to review potential scenarios for cost, schedule, constructability, and other project factors before committing to major decisions, creating opportunities to optimize budget performance and reduce unexpected issues during construction. This proactive management is one of the primary drivers of CMAR adoption among project owners.
Risks and Limitations Owners Should Understand
While CMAR offers notable advantages, it doesn’t eliminate owner risk and responsibility: its effectiveness depends on strong governance and documentation, along with active owner engagement. Owners need to provide clear scope and approve decisions promptly, while maintaining oversight over trade contracts. Inconsistent attention may reduce early collaboration benefits and increase risk exposure.
Common risks include:
- Incomplete scope definition: Ambiguity can undermine the reliability of the GMP, leading to cost overruns or schedule delays.
- Delayed approvals: Slow decision-making can compromise schedule performance and increase costs.
- Assumption misalignment: Poorly documented assumptions create disputes over scope, quality, schedule, or other factors.
- Limited visibility without systems: Poorly structured tracking may decrease the transparency benefits of CMAR.
- Procurement oversight challenges: Owners still need insight into subcontractor selection and bid evaluation to ensure accountability.
- Coordination across multiple teams: Finance, operations, and facilities need to stay aligned. Failure to maintain coordination may reduce the benefits of early contractor involvement.
- Over-reliance on contractor input: Owners need to remain actively engaged to prevent assumptions or decisions from being made unilaterally.
- Market volatility: CMAR mitigates risk, but it can’t fully eliminate exposure to labor shortages or material price increases without proactive planning.
- Complexity in multi-phase projects: Projects with multiple phases or occupied sites require vigilant schedule management and safety coordination, along with logistics planning.
- Communication gaps: Even with early contractor involvement, failure to maintain structured communication can result in misaligned expectations and delayed approvals or budget overruns.
Robust processes and clear governance combined with technology tools, such as construction cost tracking software and construction bid management software, are a must for managing these limitations effectively. Maintaining visibility and enforcing approvals, while ensuring alignment across teams, means owners can minimize exposure while benefiting from CMAR’s collaborative advantages.
How CMAR Fits Into Strong Owner Oversight
CMAR supports effective capital project oversight, combining early collaboration with defined accountability. Structured approvals and construction workflow management, along with real-time insights through analytics and reporting dashboards, allow owners to monitor cost, schedule, quality, and other project data continuously. Owners can make informed decisions quickly and ensure alignment across internal teams and contractors.
Request a demo to see how technology can support transparency and accountability, along with predictable outcomes, throughout the CMAR process.
