To monitor construction progress, compare what has actually been built against a baseline programme every week, using milestones, site visits, a daily site diary, dated photos and a simple progress chart. Hold regular site meetings with written actions, and watch the early signs of delay: few workers on site, materials not arriving, payments late, and the same problems appearing in minutes week after week. Projects rarely fall behind in one big jump. They slip a few days at a time, and good monitoring catches it while it is still easy to recover.
Start with a baseline programme
You need something to measure against. Before work starts, agree a programme with the contractor that shows:
- Each main activity (foundations, structure, roof, services, finishes, external works).
- How long each will take.
- What depends on what. You cannot roof before the walls are up.
- Key milestones, such as slab cast, roof on, building watertight, handover.
Keep the original as the baseline. Update a copy as work progresses. See our guide on creating a realistic construction programme.
Use milestones the client can see
Milestones turn a long programme into simple checkpoints:
| Milestone | Example target |
|---|---|
| Site set up, setting out done | Week 2 |
| Foundations complete | Week 6 |
| Ground floor slab cast | Week 8 |
| Structure complete | Week 16 |
| Roof on, building watertight | Week 20 |
| Services first fix complete | Week 24 |
| Finishes complete | Week 32 |
| Snagging and handover | Week 34 |
These are illustrations for a mid-size building. Linking payments to measured work, and noting milestone dates, shows quickly when things slip.
Keep a daily site diary
The site diary is the most useful record on any project. Each day note:
- Weather and any lost time.
- Number of workers by trade.
- Plant and equipment on site.
- Work done and where.
- Materials delivered.
- Instructions given and visitors.
- Problems and accidents.
When there is a dispute about a delay, the diary usually settles it.
Take dated photos from the same spots
Pick a few fixed points around the site and take photos from them every week. Side by side, they show progress better than any report. Phone photos with dates, sorted by week in a shared folder, are enough. Drones are useful on large sites. See our guide on surveying technology and drones.
Hold regular site meetings
A progress meeting every one or two weeks should cover:
- Progress against the programme.
- Look-ahead for the next two to four weeks.
- Information or decisions the contractor needs.
- Quality issues and tests.
- Safety.
- Variations and cost.
Write minutes with an owner and date for each action, and review the list at the next meeting.
Track progress with an S-curve
An S-curve plots planned cumulative progress or spending over time against actual. If the actual line falls below the planned one, the project is behind. Your QS can produce one from the monthly valuations. It is a simple way to show a board or funder where the project stands.
Warning signs of delay
- Fewer workers on site than the programme needs.
- Materials arriving late or in small amounts.
- The contractor asking for advances or complaining about cash. See cash flow for construction companies.
- Design questions waiting for answers.
- The same issues repeated in meeting minutes.
- Rework because inspections failed.
What to do when a project falls behind
- Find the cause first: labour, materials, design information, payments or weather.
- Ask the contractor for a recovery programme showing how they will catch up.
- Resolve any client-side causes quickly, such as late decisions or payments.
- Consider extra shifts or more crews on critical activities.
- Record everything. If the contract allows, delay caused by the contractor may lead to liquidated damages.
What a weekly progress report should contain
A short weekly report keeps everyone honest. Keep it to one page:
- Work completed this week, by area.
- Work planned for next week.
- Labour and plant on site each day.
- Materials delivered and materials still awaited.
- Inspections and tests done, with results.
- Problems, delays and their causes.
- Information or decisions needed from the client or designers.
- Six to ten dated photos from the fixed points.
The contractor prepares it, and the clerk of works or project manager checks it against what they saw on site.
Use payment valuations as a progress check
Every monthly valuation is also a progress measurement. The QS measures what has been built and prices it, so the cumulative valuation shows how much of the contract value is in place. Compare it with the planned spend curve. If the project is 50 percent through its time but only 30 percent through its value, it is behind, whatever the site meeting minutes say. Our guide on cash flow for construction companies explains valuations from the contractor's side.
Frequently asked questions
How often should progress be checked?
Weekly for most projects, with a formal monthly report. Large or fast projects may need daily updates on critical work.
What is a look-ahead programme?
A short programme covering the next two to four weeks in detail, so materials, labour and inspections are ready in time.
Can I monitor progress if I live abroad?
Yes, with weekly photos and videos from fixed points, a shared site diary, and an independent supervisor or project manager. See building in Tanzania from abroad.
What are liquidated damages?
An amount set in the contract that the contractor pays for each day or week of delay they caused. It must be written into the contract to apply.
Who should prepare the progress report?
The contractor prepares it, and the client's supervisor or project manager checks it. Relying only on the contractor's own report, without independent checks, is risky.
What is the best way to show progress to a board?
A one-page summary with planned against actual progress, a few photos from fixed points, the forecast completion date and the decisions needed.
Want a project delivered on time?
Vika Construction plans and tracks progress on every site, from bank branches to regional offices. See our project management services or contact us.
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