Unclear requirements are a cost nobody puts in the budget

Rework is one of the largest hidden costs in any project, and it rarely appears in a budget. Most of it traces back to one cause: nobody defined precisely who the work is for, what they need to achieve and who decides when it is right. Clear, structured user definitions cut rework and speed up approvals.

Rework is a cost, not an inconvenience

Every time a feature is built, reviewed and rebuilt, the business pays twice. It pays in time, in staff cost and in the delay before customers see the benefit. Projects drift over budget not because people work slowly, but because they keep building the wrong version first.

The symptoms are familiar: requirements that change late, approval meetings that reopen settled questions, and teams who say the brief was unclear. Each is treated as a one-off. Together, they are a predictable drain on margin and delivery dates.

Vague user descriptions create vague work

Most projects describe their users in some way. The problem is how. A description like "busy professional, 35, values convenience" sounds useful and helps nobody make a decision.

Two things are usually missing. The first is what the user is responsible for and trying to achieve, in terms specific enough to test a design against. The second is who has the authority to say a requirement is met. Without that, every stakeholder applies their own view, and approval becomes negotiation.

There is also a simple confusion of types. Some users are customers, some are internal operators, and some are decision-makers who approve the work. Treating them as one group produces requirements that satisfy none of them fully.

Structured definitions turn requirements into accountable outcomes

A better approach is to define each user group in a structured, testable way.

First, classify the type: customer, internal operator or approver. Each has different needs and different authority.

Second, describe what matters for decisions: their goals, their responsibilities, the decisions they make, the constraints they work under and how they judge success. Leave out detail that would not change a design choice.

Third, link every requirement to a user outcome. If a requirement does not serve a defined user's goal, question why it is there. This alone removes a surprising amount of scope.

Fourth, name who approves. For each user group, agree who can confirm a requirement is met. Approvals get faster because the argument about whose opinion counts has already happened.

None of this needs heavy documentation. A one-page definition per user group, kept current, does most of the work.

What to do

• For your current project, list the user groups and classify each as customer, operator or approver.
• Pick the five largest requirements and check which user outcome each one serves.
• Agree, in writing, who approves requirements for each user group.

If rework is eating your margins, let's discuss where it starts.