“Project manager” describes a function, not which party the person represents. A client-side project manager is appointed to help the owner manage its objectives and decisions. A builder’s project manager works for the contractor and manages delivery of the contractor’s obligations. Both roles can be essential on the same project.
Whose outcome does each role manage?
The client’s manager looks across the investment: why the project is needed, whether the brief is met, which risks the owner is retaining, how decisions affect operations, and what must be received at handover. The builder’s manager directs the contractor’s programme, subcontractors, procurement, site delivery, cost and contractual performance.
They should work together. Neither title gives someone unlimited authority. The contract and each appointment determine who issues instructions, certifies work, approves variations or commits the client to a cost.
| Decision | Client-side manager | Builder’s manager |
|---|---|---|
| A proposed substitute product | Tests whether it meets the client’s requirements and seeks a decision | Proposes and prices the substitute, coordinates supply and installation |
| A programme delay | Reports the client impact and contractual process | Plans recovery and submits any required notices |
| Handover information | Checks the owner receives usable records and training | Coordinates the contractual deliverables from trades and suppliers |
A simple example
Suppose a university is refurbishing an occupied teaching space. The builder’s manager plans noisy work, trade access and sequencing. The client’s manager coordinates the university’s teaching timetable, approval of any changes to room function, stakeholder communication and the consequences of proposed programme shifts. Both need the same current information, but they answer to different organisations.
Why the distinction matters
If nobody is coordinating the owner side, essential decisions can sit unanswered while the contractor’s work continues. Equally, asking a client’s manager to direct subcontractors outside the agreed contract can create confusion. A clear responsibility matrix and communication route help avoid both problems.
The Australian Institute of Architects describes independent project management as a possible source of briefing, design assessment and owner representation. NSW guidance separately identifies responsibilities that sit with the principal in a construction contract. Start with the broader definition and set the boundaries for the actual project.
Sources and further reading
- Australian Institute of Architects — independent role of the project manager
- NSW Government — principal in a construction contract
Related guides
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