Owner
The person or organization that owns the property and ultimately pays for and receives the finished project, the party every other role on a project (architect, general contractor, owner's representative) is ultimately working to serve or protect.
Why it matters
Contracts, decisions, and disputes across a project all trace back to what the owner actually wants and is willing to pay for. Understanding a project means understanding who the owner actually is and what they're trying to accomplish, not just the contractor's or architect's side of the story.
On a real project
A hospital system acts as the owner on a new surgical wing, signing a [[concept-prime-contract|prime contract]] with a general contractor and hiring an architect and an owner's representative to protect its own interests throughout design and construction.
Who this matters most to
An Owner's Representative is hired specifically to represent the owner's interests full-time, since most owners aren't in the construction business themselves. A Project Manager on the contractor's side has to balance the contractor's own interests against staying responsive to what the owner actually needs.
Where this goes wrong
A project team treats "the owner" as a single, simple decision-maker, when in reality the actual owner is a committee, a board, or a property management company with multiple stakeholders who don't always agree. A decision the project team thought was final gets reversed weeks later once it works its way through the owner's own internal approval chain.