Construction Management at Risk for Commercial Projects

Construction Management at Risk (CMAR) is a project delivery method in which a construction manager contracts directly with an owner to provide preconstruction advisory services and then assumes financial responsibility for delivering the completed project within a guaranteed maximum price (GMP). This page covers the contractual structure of CMAR, how it differs from design-bid-build and design-build delivery, the commercial project scenarios where it performs effectively, and the conditions under which alternative methods may be more appropriate. The commercial building listings for CMAR-qualified firms reflect the specialization and qualification requirements this delivery method demands.

Definition and scope

In a CMAR arrangement, the construction manager serves in a dual role: as a preconstruction consultant during design development and as the equivalent of a general contractor during construction. The defining financial mechanism is the GMP — a contractual ceiling that transfers cost-overrun exposure from the owner to the construction manager. Any project costs exceeding the GMP are absorbed by the CM unless the contract identifies specific exceptions, typically owner-directed scope changes or concealed site conditions explicitly carved out in the agreement.

CMAR is formally distinct from Construction Management as Agent (CM-Agency), where the construction manager acts solely as the owner's representative and carries no financial liability for cost performance. The Construction Management Association of America (CMAA) maintains published standards delineating these two categories, and the classification has direct consequences for bonding requirements, insurance structuring, and subcontract liability.

The American Institute of Architects publishes the AIA A133 Standard Form of Agreement Between Owner and Construction Manager as Constructor, which is the primary contract template used in private-sector CMAR procurement. For public projects, CMAR requires explicit statutory authorization in most jurisdictions — authorization that is not uniformly available across all 50 states.

How it works

CMAR delivery unfolds across two distinct contractual phases, both typically executed under a single contract or a two-phase agreement structure:

1. Preconstruction Phase — The CM is engaged early, often concurrent with the design team's schematic or design development work. Deliverables in this phase include cost estimating, constructability reviews, value engineering analysis, phasing recommendations, and preliminary subcontractor market assessments. The CM provides input on materials and systems that affect long-lead procurement timelines.

2. GMP Establishment — At a defined design completion milestone (commonly 60–90% construction documents), the CM proposes a GMP. The owner and CM negotiate the GMP scope inclusions, contingency allocations, and defined exclusions before execution. The GMP amendment converts the CM's advisory role into a construction obligation with cost liability.

3. Construction Phase — The CM self-performs or subcontracts construction work, manages the subcontractor bid process, and administers site operations. The CM holds all subcontracts directly, assuming legal and financial responsibility for their performance.

4. Permitting and Inspection Coordination — The CM typically manages permit applications, coordinates with the authority having jurisdiction (AHJ), and schedules inspections required under the applicable building code. For commercial projects, this includes compliance with the International Building Code (IBC) as adopted by the local jurisdiction, and coordination with fire marshals, health departments, and utility authorities as applicable.

Safety obligations during construction fall under OSHA 29 CFR 1926, which governs construction work safety at the federal level. As the entity controlling the site, the CMAR firm bears primary OSHA compliance responsibility, distinguishing it from CM-Agency arrangements where site safety accountability can be more diffuse.

Common scenarios

CMAR is most frequently applied in commercial project categories where design complexity, budget sensitivity, or phased occupancy requirements create conditions poorly served by traditional sequential delivery:

• Healthcare facilities — Hospital and ambulatory care construction involves highly technical systems, phased occupancy while clinical operations continue, and infection control requirements that benefit from early CM coordination with design teams.
• Higher education buildings — Campus projects often involve public funding oversight, defined academic-year occupancy deadlines, and institutional review processes that align with CMAR's collaborative preconstruction structure.
• Large-scale office and mixed-use developments — Projects exceeding $20 million in construction value frequently encounter sufficient design complexity and subcontractor market variability to justify CMAR's cost-certainty mechanism.
• Public infrastructure with legislative CMAR authorization — States including Texas, Florida, and Colorado have statutes expressly authorizing CMAR for public building projects, enabling government owners to access the delivery method.

The commercial-building-directory-purpose-and-scope resource provides additional context on how delivery method categories are organized within commercial construction classification frameworks.

Decision boundaries

CMAR is not universally the optimal delivery method. Selecting it over alternatives requires an assessment of several structural factors:

CMAR versus Design-Bid-Build — Design-bid-build achieves the lowest bid price through open competitive tension at 100% construction documents. CMAR sacrifices some competitive bidding transparency in exchange for early cost input and schedule integration. Owners with straightforward programs, adequate in-house project management capacity, and no early occupancy pressure often find design-bid-build sufficient.

CMAR versus Design-Build — Design-build consolidates design and construction responsibility in a single entity, typically delivering faster project schedules but limiting owner control over design decisions after contract execution. CMAR preserves the owner's separate relationship with the architect, which matters for projects where design quality, brand standards, or regulatory review complexity make direct architect accountability essential.

Disqualifying conditions for CMAR include:
- Jurisdictions where enabling legislation does not authorize CMAR for public procurement
- Owners without sufficient internal capacity to engage meaningfully in GMP negotiation
- Projects with fully defined scopes where competitive bidding produces demonstrably lower costs
- Contracts where the owner's legal counsel identifies bonding or surety limitations on the CM's GMP obligation

The how-to-use-this-commercial-building-resource page describes how delivery method filters operate within the directory's firm-search structure for owners qualifying CMAR contractors.

References

• Construction Management Association of America (CMAA) — Standards of Practice
• AIA A133-2019 Standard Form of Agreement Between Owner and Construction Manager as Constructor
• OSHA 29 CFR Part 1926 — Safety and Health Regulations for Construction
• International Building Code (IBC) — International Code Council
• Federal Acquisition Regulation (FAR) — Construction Contracting