Construction audit: what they will ask for and how to be ready
A construction audit is the review that a third party —an oversight body, an internal auditor, an institutional client or a funding entity— carries out on the execution and payment of a construction contract. Its underlying question is always the same: does what was claimed match what was built, and is it supported?
It is not a hostile procedure by nature. It becomes hostile when the supporting record does not exist and has to be reconstructed, because reconstruction shows.
When it turns up
In public works, through the relevant oversight bodies, and it can happen during execution or years after final settlement.
In funded works, through the entity providing the money, at a defined frequency.
In institutional private works, through the client’s internal audit or that of a fund.
In any project, when a dispute appears. The first thing any lawyer does is ask for the complete file.
That last case is the most frequent and the least anticipated.
What they will ask for
In rough order of importance:
| Document | What they check |
|---|---|
| Contract and its amendments | Scope, prices, current deadlines |
| Payment claims for the period and cumulative | That the totals add up and there is no duplication |
| Measurement take-offs | How each claimed quantity was arrived at |
| Dated photographic record | That what was claimed exists |
| Site logbook or daybook | Context and sign-offs |
| Supervision sign-offs | That a third party validated it |
| Testing and quality control | Technical compliance |
| Variation and extension of time paperwork | That the extraordinary was authorised |
| Personnel documentation | Compliance with labour obligations |
| Purchase orders and delivery notes | Traceability of materials |
The four most frequent findings
Quantities claimed with no measurement support. The classic. The quantity appears in the claim, the auditor looks for the take-off showing how it was measured and it is not there. It does not matter that the work exists: without support, it is a finding.
Work claimed with no evidence of prior sign-off. It was claimed before supervision accepted it.
Variations executed without paperwork. The most expensive case. Real work, necessary, well built, but with no documented prior authorisation. It can end in the payment not being recognised.
Inconsistencies between documents. The cumulative on the claim does not match the sum of the previous ones. The date in the logbook does not match the one on the report. The photo does not correspond to the work face described. Every minor inconsistency erodes the credibility of the whole file.
The reconstruction problem
When an audit lands and support is missing, the natural reaction is to put it together. And there a risk appears that many underestimate.
A reconstructed document shows. Uniform paper, uniform ink, uniform handwriting in documents that should span months. Dates forming a suspiciously tidy series. Photos with no coherent metadata. An experienced auditor spots it, and the problem goes from being an omission to being something else.
The honest way out when support is missing is to acknowledge it, explain why, and provide whatever does exist —emails, meeting minutes, correspondence— as indirect evidence. It is a worse outcome than having the support and it is far better than the other road.
How to be ready
The file is built during the works, not before the audit. That is the whole point. If the daily record exists, with take-offs, photos and sign-offs, the audit is an exercise in handing over what is already there.
An index of the file from day one. What documents exist, where they are, who holds them. It sounds bureaucratic and it is what turns a three-week audit into a three-day one.
Everything searchable by date and by work face. That is how an auditor searches. A folder organised by document type forces manual cross-referencing and multiplies the time.
Photographs with a date and an identifiable location, organised. Three hundred unorganised photos are worth zero photos.
Frequent sign-offs. A claim with weekly supervision sign-off is far harder to object to than one with a single signature at month end.
During the audit
Appoint a single point of contact. Several people answering an auditor produces versions that do not match, and verbal inconsistencies are as damaging as documentary ones.
Answer what is asked. Volunteering unrequested information opens new lines of review.
Record what was handed over and when. With acknowledgement of receipt. It is your proof of cooperation.
Do not speculate. If you do not know, say so and go find out. An approximate answer that later turns out to be wrong is worse than “let me check”.
The strategic reading
It is worth saying plainly: most contractors who suffer an audit did nothing improper. They suffer because the support for what they did well was never assembled, and two years on it can no longer be.
It is the same argument that holds up the site logbook, the take-offs and the daily record. The file is not built for the audit. It is built just in case, and it is almost never used. When it is used, it pays for all the years it was not.
Frequently asked questions
- How far back can an audit look?
- It depends on the regime and the type of audit. In public works, liability periods can extend several years past final settlement. Keep the complete file for that whole period.
- What happens if a finding results in a formal observation?
- It depends on its nature. It can range from a recommendation to a demand for repayment or the start of a proceeding. What almost always helps is answering with documentation, within the time given.
- Can I refuse to hand over information?
- In audits with legal authority, no. What is appropriate is that the request be formal and that there be a record of what was asked for and what was handed over.
- Is a digital project file worth it?
- Very much so, as long as it is searchable, verifiably dated and not alterable without a trace. A shared folder of editable files fails that last point, and that can become an issue in itself.
- Should I involve a lawyer?
- If the audit leads to observations with consequences, yes, and early. A response to an observation has a required form and deadline, and a badly framed response complicates what was solvable.
Founder and CEO of Paladio. He has spent more than 15 years building financial products that touch the lives of millions of people. He writes about what he sees on site: how progress is really measured and where the money leaks.
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