EPC Project Cost Planning
EPC contracts transfer execution risk to a contractor — but the owner still owns the cost planning discipline. Weak internal planning turns EPC contracts into a series of change orders.
Contract models and their cost implications
Lump-sum turnkey (LSTK): highest premium, lowest owner risk. Open-book with target price: lower premium, shared savings. EPCM: fee-based, owner carries execution risk. The choice must be made before the budget is finalised.
The change-order defence
80% of EPC cost overruns come from scope changes originated by the owner. A disciplined pre-EPC budget with a 10–15% owner's reserve (separate from contractor contingency) is the only proven defence.
Turn this framework into a bankable budget
The Industrial Project Budget & Cost Planner captures every dimension covered in this guide — procurement, logistics, engineering, contingency, financing readiness and risk — in a single dashboard, then hands off to the Enterprise RFQ Builder.
Frequently asked questions
Contractor contingency covers execution risk within scope. Owner's reserve funds scope changes originated by the owner. Never conflate them.