The anticipated final cost, reported honestly
A client can absorb bad news about a budget. What it cannot absorb is finding out late, from a report that had been reassuring for four months.
QScope Team · 21 December 2025 · 6 min read
An interim valuation looks backwards: what has been earned. A cost report looks forward: what will this cost when it is finished.
They draw on the same data and answer different questions, and a client that receives only valuations has no idea where the job is heading.
The structure
| Line | Basis |
|---|---|
| Contract sum | As executed |
| Variations agreed | Instructed and valued |
| Variations instructed, not yet agreed | Best assessment, identified as an assessment |
| Variations anticipated | Known changes not yet instructed |
| Provisional sums, expenditure to date | Actual, against allowance |
| Provisional sums, forecast on the remainder | Assessed |
| Claims, assessed | Your assessment, not the claimed figure |
| Risk allowance | From the risk register, not a percentage |
| Anticipated final cost | |
| Against: approved budget | The comparison the client actually reads |
The four judgements
Unagreed variations
Report your assessment, clearly labelled as such, and show the contractor's figure alongside where it differs materially. Reporting the contractor's number without comment overstates the position. Reporting nothing understates it. Reporting both, with the difference identified as an open item, tells the client what it needs to know.
Anticipated variations
Changes everyone knows are coming but nobody has instructed. Excluding them because they are not formal is how a report stays comfortable while the job moves.
Include them, identified as anticipated, with the basis stated. If a client is going to be asked for money in six weeks, six weeks of notice is the point of the report.
Claims
Assess them. A submitted claim of £180,000 that you assess at £45,000 goes in at £45,000, with the claimed figure disclosed and the difference explained. Reporting the claim at face value hands your assessment to the claimant.
Risk
A risk allowance drawn from an actual register of identified risks with probability and cost is defensible. A flat percentage is a habit. The difference shows the first time a client asks what the allowance is for.
Reporting movement
The most useful column is not this month's figure. It is the change since last month, with an explanation.
A client reading "anticipated final cost £2.34m" learns very little. A client reading "£2.34m, up £41,000, of which £28,000 is the drainage variation instructed on the 12th and £13,000 is a reassessment of the roofing provisional sum" can act.
The first bad report
The most important report on any job is the first one that has to deliver bad news, and it is the one where the temptation to wait is strongest.
The reasoning is familiar: the variation might be reduced, the claim might be withdrawn, the provisional sum might come in lower, so reporting it now might be alarming the client unnecessarily.
Occasionally that is right. More often it means the client learns about a £90,000 overrun in month nine that was visible in month five, and the conversation is no longer about the money.
Frequency and audience
Monthly, aligned to the valuation cycle, is right for most projects. What varies is the audience: a board wants the movement and the reasons in one page, a project team wants the detail behind each line.
Produce both from the same data. Two reports built separately will disagree, and the disagreement will be found by the one person you would least like to find it.
QScope builds the cost report from the same contract sum, variations and provisional sums as your valuations, so the reported figure and the certified figure cannot drift apart.