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Acronymsaka: Owner Architect Contractoraka: OAC meeting

OAC (Owner Architect Contractor)

In Plain English

The three core parties on a construction project—owner, architect, and contractor—who meet regularly to manage the project.

Definition

OAC refers to the three-party relationship among the project owner, the architect of record, and the general contractor that forms the core management team on a traditionally delivered construction project. OAC meetings are regularly scheduled project coordination meetings where these three parties review progress, address RFIs and submittals, resolve open issues, and make project decisions. The OAC team structure reflects the traditional AIA contract hierarchy where the owner contracts separately with the architect and contractor.

Why It Matters in Bidding

OAC meetings are where scope interpretation, RFI resolution, and change-order direction actually get decided, so the outcomes directly affect a contractor's cost recovery and schedule. Estimators and PMs should budget time for these recurring meetings and recognize that early, well-documented OAC decisions reduce disputes later in the job. Understanding the three-party structure also clarifies who has authority to approve changes, because the architect often interprets the documents while only the owner can authorize added cost.

Example

At a weekly OAC meeting, the GC's project manager raises an unresolved RFI about a slab-edge detail, the architect issues clarifying direction on the spot, and the owner approves the resulting cost impact so the foundation pour stays on schedule.

Related Terms

AIA (American Institute of Architects)GC (General Contractor)RFI (Request for Information)

Frequently Asked Questions

The owner, architect, and contractor review schedule progress, open RFIs and submittals, pending change orders, quality issues, and upcoming milestones. Decisions and action items are documented in meeting minutes. These meetings keep the three parties aligned and create a record that is valuable if scope or schedule disputes arise later.
Core attendees are the owner or their representative, the architect of record, and the general contractor's project manager and superintendent. Depending on the agenda, the structural or MEP engineers, key subcontractors, the construction manager, and consultants may also join to resolve technical or coordination questions affecting their scope.
In the traditional structure the architect interprets the contract documents and reviews submittals, but only the owner can authorize spending. Knowing this split helps a contractor route change requests correctly, since architect approval of a design intent does not by itself commit the owner to pay for added cost or time.

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