Guide · 20 October 2026
Most small crews already run the job on WhatsApp. The problem is rarely the app. It is whether the group is run as a record, or left as a stream of chat nobody can find anything in a week later.
This playbook is how well-run crews do it. No new software, no training session, just small habits that keep the group readable and useful when anyone asks what happened on a given day.
Start with the structure. Everything else depends on it.
When a second site starts, open a second group. When a crew splits, the new crew gets its own group. Consolidating feels tidier. Resist it: you do not want to scroll through another job's deliveries to prove what happened on yours.
A group name has one job: a stranger (a new starter, a PM covering for someone, you in six months) should find the right group in seconds. Use the same pattern every time: PROJECT – SITE OR AREA – CREW. For example:
Avoid names like "Site Team", "New Job" or a client's first name on its own. They made sense on the day the group was created. In a list of fourteen groups they make no sense.
Keep the group work-only, and small enough to stay readable. Include:
Leave out anyone who only needs the finished report. They can receive it without living in the chat. Every extra member adds noise, and a chance for discussion to drift into a private thread.
Pin the few messages anyone should reach in two taps (WhatsApp lets you pin up to three):
Update the plan pin each morning or the night before. A pinned plan three days old is worse than none, because people trust it and act on it.
Photos are the strongest part of a site record and, badly handled, the fastest way to ruin one. Hundreds of uncaptioned photos prove almost nothing.
If a photo matters, it goes in the group, captioned, that day, not left in a camera roll.
On site, typing is slow, gloves are on, and screens are hard to read in bright light. Voice notes are how information actually moves. Keep them factual and short:
"Need twenty more metres of 110 pipe, Block B ground floor, delivery ran short" is a complete report. A two-minute note mixing three subjects is not. One subject per note, and follow anything important with a short typed line so it can be found in search.
Flag problems the moment they happen, in the group, in plain words. A wrong delivery, a drawing that does not match the building, a trade held up waiting on another: post it when you find it, with a photo if it helps. A problem buried in chat scroll is a problem lost. Raised three days later it reads as an excuse; raised on the day, it reads as management.
Then confirm decisions and approvals in the group, in writing. If a client agrees a change on a call, post the summary: what was agreed, by whom, and any cost or time effect. Side calls leave no record.
At the end of the day, the foreman closes with one short summary message:
Five minutes at 5pm saves the 10pm reconstruction from memory and three separate conversations. It also gives the PM a fixed point each evening, instead of two hundred messages to read through. If only one habit survives, it should be this one.
Groups rarely fail at once. They erode. Watch for these:
None of these need a rulebook. They need the foreman to hold the line for the first two weeks. After that the habit holds itself.
Even a disciplined group is still a chat thread. The information is there (work done, materials, labour, issues, photos, approvals) but it sits in scroll order. Someone still has to pull it out into a report that can be filed, searched and sent on. That job usually lands on the PM, in the evening.
That is the gap SiteTab fills. It is a WhatsApp contact you add to the crew's existing group, and the team keeps chatting exactly as now, with no new app and no behaviour change. SiteTab files the day's messages, photos, voice notes and documents under issues, progress, materials, approvals and documents, and drafts a daily report. The PM reviews it before it goes out.
If you are weighing that approach against dedicated site apps, our comparison sets out the difference plainly.
The cost is flat: $10 per WhatsApp group per month, however many people are in the group. Run the playbook first, because it improves any group. Then let the report be pulled from the group you already run.
Want a format your crew will actually send? See how to write a daily construction site report from WhatsApp.
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