Construction management at risk, or CMAR, is a project delivery method where a constructor takes on early involvement and measurable performance obligations. Under this approach, the owner signs a risk-sharing agreement with the selected constructor before design is finalized, creating distinct pros and cons that shape project outcomes.
Unlike traditional methods, CMAR aligns incentives around schedule, cost, and quality through a guaranteed maximum price established during the preconstruction phase. The following structured overview highlights key dimensions of CMAR at a glance.
| Aspect | Description | Typical Advantage | Typical Disadvantage |
|---|---|---|---|
| Project Delivery Method | Owner contracts with a CMAR early, who later transitions to contractor | Early contractor input and schedule compression | Reduced flexibility once contract is executed |
| Risk Allocation | Shared risk framework with performance-based guarantees | Owner exposure is limited to GPM plus fee if defined clearly | CMAR may price conservatively to protect downside, raising baseline bid |
| Cost Structure | Guaranteed maximum price with unit price or cost-plus options | Budget certainty when GPM is well-defined and controlled | Potential for change order disputes if scope is not meticulously detailed |
| Schedule Impact | Preconstruction overlaps design activities, accelerating overall timeline | Earlier construction start and improved timeline confidence | Rushed design reviews can create quality issues if not managed |
| Stakeholder Roles | CMAR acts as both advisor and builder under phased responsibilities | Streamlined approvals and clearer accountability for means and methods | Owner must maintain strong governance to avoid influence imbalances |
Preconstruction and Early Contractor Engagement
In CMAR projects, the preconstruction phase is where risk identification, value engineering, and scheduling optimization occur. The CMAR team uses constructability reviews to prevent downstream conflicts, aligning design intent with realistic execution strategies well before mobilization.
Guaranteed Maximum Price and Cost Control
A cornerstone of CMAR at risk is the negotiated guaranteed maximum price, which sets a financial cap subject to agreed allowable adjustments. When the contract defines exclusions and change order protocols clearly, owners gain budget predictability while contractors maintain incentive to control waste and inefficiency.
Schedule Acceleration and Delivery Certainty
By overlapping design and procurement activities, CMAR at risk can shorten overall timelines compared with linear delivery approaches. The early involvement of the constructor fosters realistic sequencing, procurement long-lead planning, and proactive risk mitigation that support on-time completion targets.
Quality Management and Constructability Integration
CMAR at risk encourages joint collaboration on materials, methods, and systems integration during design development. This partnership reduces rework potential, supports performance-based specifications, and aligns quality expectations from documentation through field execution.
Operational Recommendations for CMAR at Risk
- Define scope boundaries and risk allocation early in the procurement process
- Require detailed preconstruction plans that outline value engineering opportunities
- Establish transparent metrics for schedule, cost, and quality performance
- Implement structured change management protocols tied to the contract
- Verify contractor qualifications, past performance, and resource availability
FAQ
Reader questions
How does risk allocation differ between CMAR and traditional delivery models?
Under CMAR at risk, the contractor typically accepts more performance risk for cost and schedule within the guaranteed maximum price, whereas traditional models often place design risk with the owner and separate liability for trade coordination, leading to different risk transfer points.
What should an owner prioritize when evaluating CMAR proposals?
Owners should focus on the clarity of the guaranteed maximum price, the detail of scope exclusions, the contractor’s relevant experience, past project performance, and the transparency of the preconstruction and change order management process.
Can CMAR at risk accommodate design changes after the contract is executed?
Yes, changes are possible through structured change order protocols, but they must be managed carefully to control cost and schedule impacts; clearly defined thresholds and approval workflows help preserve the benefits of early contractor involvement.
What level of owner involvement is required for successful CMAR projects?
Owners need active participation in key decisions during preconstruction, clear definition of project objectives, robust governance structures, and timely approvals to ensure that contractor input is leveraged without compromising their oversight responsibilities.