When a dispute reaches a tribunal or an adjudicator, the builder with a daily site diary usually wins the argument about what happened. The builder without one is relying on memory against the other side’s emails. A site diary takes five minutes at the end of the day. This template puts everything worth recording on one page.
Why contemporaneous records matter
A record made on the day, by someone who was there, carries far more weight than a reconstruction made months later. That is the whole value of a site diary. It is the evidence behind extension of time claims, variation claims, payment disputes, defect claims and insurance claims, and it protects against the common problem of the owner, the architect and the builder each remembering a different conversation.
What to record, and why each part earns its place
| Entry | What it proves later |
|---|---|
| Weather and site conditions | Wet weather delays and lost days, the most common basis for extension of time |
| Labour and trades | Who was working, progress rates, and the labour behind a variation |
| Work completed | Progress for payment claims and program updates |
| Deliveries and delays | Late or wrong materials, and the time lost, with its cause |
| Instructions and visitors | Owner and consultant instructions, especially verbal ones, and inspections |
| Safety | Consultation, inspections, incidents and hazards |
| Photos | Visual evidence of progress, conditions and work before it was covered |
Write it like evidence
- Same day, every day. Including days nothing happened: “site closed, rain from 6am” is evidence.
- Facts, not opinions. “Plumber did not attend as booked”, not “plumber useless again”.
- Specific. Times, areas, names, quantities.
- Never rewrite. Add a dated note if something needs correcting. Changed entries undermine the whole diary.
- Signed. A signature and date make it a record rather than a note.
Verbal instructions: the most valuable line in the diary
Owners change their minds on site. Consultants give instructions in passing. Those conversations become disputes when the invoice arrives. Record every instruction in section 5, and confirm significant ones in writing the same day, as a variation or an RFI. In NSW residential work, variations need to be agreed in writing, so the diary entry is the prompt to get the paperwork signed before the work is done.
Delays and extensions of time
An extension of time claim has to show that a delay happened, what caused it, and how it affected completion. Most contracts also require notice within a set time. The diary supplies the evidence: rain start and stop times, the trade that could not work, the late delivery, the owner’s instruction that stopped a trade. Without daily records, an EOT claim is an argument; with them, it is a calculation.
Paper or app?
Either works. Many builders now use a phone app or a shared spreadsheet, which makes photos easy and backs everything up. Whatever the format, the rules are the same: dated entries, made on the day, not silently edited later. The PDF version of this template prints as a daily pad; the Word version can be adapted into a digital form.
Keep it for years
Residential defect claims can surface years after handover, within statutory warranty periods. Keep site diaries with the project records for at least as long as claims could be made, alongside the payment claims, variations and handover documents they support.
What a good entry looks like
A useful diary entry is short, factual and specific. For example:
Tuesday. Site 7am to 3.30pm. Fine morning; rain from 12.40pm, heavy until 2.15pm; site too wet to continue earthworks. On site: own carpenters (2) framing level 1 east; plumber (1) stormwater, stopped at 12.40pm due to rain; bricklayers did not attend as booked (supervisor called 7.30am, no answer). Delivered: level 1 floor trusses 9am, checked against order, one damaged, supplier notified. Owner on site 10.30am, asked to move kitchen window 300 mm left: told a variation would be issued; V07 sent 2pm. Toolbox talk 7am: working at heights on level 1, 8 attendees. Photos 1123 to 1140.
Every fact in that entry could matter later: the rain for an extension of time, the missing bricklayers for the program, the damaged truss for the supplier, and the owner’s instruction for the variation.
Diaries in disputes
When a dispute reaches an adjudicator, NCAT or a court, contemporaneous records are given significant weight because they were made before anyone knew there would be a dispute. A diary that is complete, dated and consistent is persuasive. A diary with gaps, entries clearly written later, or changes that are not explained is much less so, and can damage the credibility of everything else. That is why the rules in this guide matter: same day, factual, never rewritten. It is also why the diary should be kept by someone on site every day, not reconstructed at the end of the week.
