Guide
EPCM vs EPC: what is the difference?
EPCM (engineering, procurement and construction management) is a professional services model where the contractor designs and manages the works while the owner holds the construction contracts. EPC (engineering, procurement and construction) is a turnkey model where one contractor delivers the finished asset, usually for a lump sum, and carries the construction risk.
What does EPCM stand for?
EPCM stands for engineering, procurement and construction management. An EPCM contractor is an engineering firm engaged by the project owner to design the works, run procurement and manage construction on the owner's behalf. The EPCM firm does not build the asset itself: construction contracts sit with the owner, and the EPCM firm supervises the contractors who hold them.
What does EPC stand for?
EPC stands for engineering, procurement and construction. An EPC contractor takes single-point responsibility for delivering the completed, working asset, engineering it, buying the equipment and constructing it, most often under a lump sum or guaranteed maximum price. The owner specifies the outcome and the contractor carries the delivery risk, which is priced into the contract.
How do EPCM and EPC compare?
| Aspect | EPCM | EPC |
|---|---|---|
| Contract type | Professional services agreement. The EPCM firm acts as the owner's engineer and manager. | Turnkey works contract. The EPC contractor delivers the completed asset. |
| Who holds the construction contracts | The owner contracts trades and suppliers directly, managed by the EPCM firm. | The EPC contractor holds all subcontracts. |
| Construction risk | Stays largely with the owner, managed down by the EPCM firm's supervision. | Transferred to the contractor, priced into the contract. |
| Cost model | Typically reimbursable or rates-based fees, with full owner visibility of project costs. | Typically lump sum or guaranteed maximum price, with contractor margin on risk. |
| Owner control and flexibility | High. Scope changes are handled within the management structure. | Lower. Changes are contract variations and priced accordingly. |
| Best suited to | Projects with evolving scope, brownfield work, or owners with strong internal teams. | Well-defined scope where the owner wants a fixed price and a single point of responsibility. |
When is EPCM the right model?
EPCM suits projects where scope is still evolving, where brownfield conditions make a fixed price hard to set honestly, or where the owner has a capable internal team and wants cost visibility rather than a risk premium. Because the owner holds the contracts, an EPCM arrangement can flex as the project changes without renegotiating a head contract. The trade-off is that the owner keeps more of the delivery risk, which is why the quality of the EPCM firm's engineering and supervision matters so much.
For what that management role looks like phase by phase, see what does an EPCM contractor do?
Who provides EPCM services in Australia?
EPCM Solutions provides EPCM services for mining, utilities, oil and gas and industrial projects from offices in Perth and Sydney, with delivered projects for clients including BHP, Fortescue, Sydney Metro West and the Department of Defence. Our senior team includes chartered engineers, and the firm holds Level 3 Accredited Service Provider (ASP) accreditation for HV and LV design.
Page updated 21 August 2026
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