Key takeaways
- Seven record sets cover almost every dispute: contract, site diary, variation register, delivery and test records, measurement book, safety file and handover pack.
- The daily site report is the most valuable of the seven, because it is the only one written before anyone knows it will matter.
- Confirm every verbal instruction in writing the same day. An unconfirmed instruction is worth nothing later.
- Keep the full project file for at least seven years after handover; structural records, for the life of the building.
Every contractor who has been through a serious dispute says the same thing afterwards: the argument was not about what happened, it was about what could be shown to have happened. The company with the contemporaneous records sets the facts. The company reconstructing from memory and WhatsApp is negotiating from behind.
None of this requires a document management system. It requires seven files, kept properly, from day one.
1. The contract and its attachments
Not just the signed agreement — the whole package it refers to. The priced bill of quantities, the specification, the drawings register with revision numbers, the conditions of contract, and every appendix on programme, retention and liquidated damages.
The drawings register is the part most often neglected and most often decisive. When a claim turns on whether you built to Rev C or Rev D, the register showing when each revision was issued and received is the entire case. Keep superseded revisions — never destroy them.
2. The daily site report
One page, every working day, without exception. Date, weather, manpower by trade, plant on site, work carried out by location, materials received, visitors, instructions received, and any stoppage with its cause and duration.
This is the most valuable document you will produce, precisely because it is written without knowing which day will turn out to matter. Reconstructed diaries carry almost no weight; contemporaneous ones carry a great deal. If a delay claim ever depends on how many days were lost to rain in a given month, the site diary is the answer and nothing else is.
The discipline is filling it in every day, including the quiet ones. A diary with gaps invites the argument that the gaps were the days that suited you.
3. The site instruction and variation register
A numbered log of every instruction received: reference, date, who issued it, what was instructed, and whether it carries a time or cost implication.
The rule that matters is simple. Confirm every verbal instruction in writing the same day. A short note — "Confirming your instruction on site this morning to relocate the manhole 1.5 m east; we consider this a variation and will submit costs" — converts a conversation into a record. Six months later, after the engineer has moved to another project, that note is the only version of events that exists.
4. Delivery challans and test certificates
Every material that arrives should leave a paper trail: the delivery challan or goods receipt note, and for anything structural, the manufacturer's test certificate and any independent test results.
Steel mill certificates, cement test reports, concrete cube results at 7 and 28 days, brick compressive strength results. These prove you supplied what the specification demanded — and if a material later fails, they move the question from your workmanship to the supplier's product.
Cube results deserve their own sub-file, indexed by pour location and date, cross-referenced to the concrete pour card. A slab whose cube results cannot be located is a slab you cannot defend.
5. The measurement book and payment certificates
Joint measurements recorded and signed by both parties as work proceeds, and the interim payment certificates that follow from them.
The key word is joint. Work measured alone and submitted later invites re-measurement, and re-measurement almost never goes in the contractor's favour — particularly for work now buried. Foundations, backfilled services and concealed services should be measured and signed before they disappear, with photographs.
6. The safety file
Induction records, toolbox talk registers with signatures, plant and lifting equipment inspection certificates, permits to work, and the incident and near-miss register.
This one is different from the others: its purpose is not commercial. After a serious incident, the first question asked is whether the injured person was inducted and briefed, and the second is whether the equipment was certified. Those answers exist in this file or they do not exist at all.
Keep near-misses too. A register showing near-misses recorded and acted on demonstrates a functioning safety system far better than a register showing nothing ever happened.
7. The handover pack
The document that closes the project, and usually what triggers release of the first half of retention. It contains the closed snag register, as-built drawings, operation and maintenance manuals, warranties and guarantees with their start dates, test and commissioning certificates, statutory approvals and completion certificates, and the keys register.
Assemble it as you go. A handover pack compiled in the final fortnight is missing half the warranties, because the subcontractor who installed the pumps demobilised four months ago.
How long to keep it all
| Record | Minimum retention |
|---|---|
| Contract, drawings register, variations | Limitation period, commonly 6–12 years from completion |
| Site diaries, measurement books | 7 years after handover |
| Material test certificates, cube results | Life of the structure |
| Safety and incident records | Per local statutory requirement — often decades for exposure records |
| Handover pack | Life of the structure; a copy to the client |
Check the limitation period and statutory retention rules that apply where you build — these vary by jurisdiction.
Scan everything, back it up off-site, and keep the scans indexed by project and date. A site office fire should cost you a portacabin, not a case.
Frequently asked questions
How long should I keep project records?
Long enough to cover the limitation period for a claim, commonly six to twelve years from completion depending on jurisdiction and whether the contract is under seal. Seven years after handover is a common working rule; structural test records are often kept for the life of the building.
Which single record matters most?
The daily site report. It is the only one made contemporaneously, every day, without knowing which day will matter — which is exactly why it carries weight when a delay claim is assessed.
Do I need to record verbal instructions?
Yes, in writing, the same day. State what was instructed, by whom and when, and flag any time or cost implication. An unconfirmed verbal instruction is worth nothing once the people involved have moved on.
What belongs in a handover pack?
Closed snag register, as-built drawings, O&M manuals, warranties with start dates, test and commissioning certificates, statutory approvals and completion certificates, and the keys register. Assemble it throughout the job, not at the end.