How to Improve Change Control on Construction Projects
Change itself is not the problem on most construction projects. Uncontrolled change is — and the difference between the two comes down to a small number of disciplines, consistently applied.
Marcel Mbene, ChPP — Founder, Bold Leverage Ltd · 13 July 2026
Why change control breaks down
Almost every construction project experiences change: unforeseen ground conditions, client requirement changes, design development, errors discovered during construction. Change is not inherently a management failure. What causes cost and programme overrun is change that proceeds without proper assessment before it is instructed, or without the resulting cost and time effects being captured and agreed close to when the change occurred.
This typically happens under programme pressure: a decision is needed quickly to avoid delay, so it is made verbally on site and formalised — if at all — much later, once memories have faded and positions have hardened.
The core disciplines that make change control work
Effective change control rests on a small number of consistent habits. Every proposed change is assessed for cost, time and technical effect before it is instructed, not after. Verbal instructions on site are confirmed in writing within days, not weeks, while the details are still fresh and undisputed. Change is tracked in a single, shared register that both parties can see, rather than in separate systems that only get reconciled at the end of the project. And commercial and technical assessment happen together, so a change is not approved on technical grounds without anyone having considered its cost and programme effect.
Why the register matters more than it seems to
A well-maintained change register does more than track individual items. It gives early warning of cumulative cost and time exposure, well before the final account is prepared — often the single most useful piece of commercial information available to a client mid-project. Projects that leave change reconciliation until the end routinely discover, too late, that the cumulative effect of many small, individually reasonable changes has quietly consumed the project's contingency.
Our view
Change control discipline is one of the most consistent value drivers in our contract management work — not because the principles are complicated, but because maintaining them under programme pressure requires dedicated attention that project teams are often too stretched to give.