Concrete Pour Witness
Pre-pour verification plus on-site attendance during the pour, slump test observed, installation monitored, defects caught in real time.
- Same-day report (subject to access and availability)
- Upfront pricing
- 12 months free advice
What's in your concrete pour witness inspection
Included
- All Pre-Pour Inspection items, set-out, vapour barrier, steel, footings, services
- Attendance during the concrete pour
- Observation of site concrete slump test (if conducted)
- Observation of concrete installation and placement
- Compliance assessment to AS 2870-2011
- Same-day written report with photo evidence
Not included
- Post-pour slab inspection (separate service)
- Engineering certification
- Concrete batching plant inspection
- Soil testing or geotechnical assessment
Our inspectors document every accessible element on site with photo evidence and severity ratings.
Why you might need this
- Owner-builder wanting independent oversight at both the pre-pour and pour stages
- High-value or complex slab where placement quality is critical
- Builder's client who wants witnessed documentation of the pour
- Dispute prevention, documented pour witness can be critical if cracks develop later
- Construction where the client's lender requires a witnessed stage inspection at slab stage
Stage pricing is confirmed at booking. The fee depends on the build stage, site access, and inspection scope. Use the guide price in the header as a starting point, then book online to confirm your quote.
The build sequence
Where this inspection sits in the build
Every stage inspection has a right moment. Here is the full sequence, with this inspection highlighted and when to book each of the others.
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- When to book
- Book as soon as your builder confirms the pour date. We inspect one to two days before the trucks arrive.
- Why it matters
- Once concrete is poured, the formwork, footings and reinforcement can never be checked again.
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Stage 2 of 11 This inspection
Concrete Pour Witness
On the day of the pour
- When to book
- Book once the pour date is locked in. One visit covers the pre-pour check and the pour itself.
- Why it matters
- The one chance to check the slab while it is being placed, not after it has set.
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- When to book
- Book for two or more days after the pour, before your builder starts framing or brickwork.
- Why it matters
- Once the walls go up, nobody can check the slab set-out or catch early cracking.
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- When to book
- Book the moment stumps or posts are in. If there are footings, they need to be poured first.
- Why it matters
- Framing is built straight over them. Alignment and fixing faults disappear from view.
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- When to book
- Book when the brick walls top out, before the roof trusses arrive on site.
- Why it matters
- Wall plumbness, plate level and tie-downs are out of reach once the roof frame goes on.
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- When to book
- Book the day framing finishes, before any roof cover, cladding or plasterboard goes on.
- Why it matters
- Bracing, tie-downs and lintel sizing can only be checked now.
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- When to book
- Book once the roof frame is up, before the roof cover goes on.
- Why it matters
- Truss fixing and roof bracing get sealed under the roof cover for the life of the house.
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- When to book
- Book once the building is sealed and lockable: roof on, external doors and windows in, before internal fit-out begins.
- Why it matters
- Your last look at flashings, brick ties and waterproofing before the linings hide them.
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- When to book
- Book as soon as your builder gives you the PCI date and time.
- Why it matters
- Defects documented at PCI are contract corrections. Miss them and they turn into warranty disputes.
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- When to book
- Book once the builder confirms the PCI defect repairs are finished.
- Why it matters
- Independent confirmation that every PCI item was actually fixed before you accept the keys.
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- When to book
- Book in good time before your warranty period closes. Your builder or contract sets the exact window.
- Why it matters
- The last window to put settling and movement defects back on the builder before the warranty closes.
The process
- 1
Book before your pour date
Book 2–3 days before the pour. Confirm the pour start time so we can schedule the inspector's attendance.
- 2
Pre-pour verification completed first
The inspector verifies set-out, steel, vapour barrier and footings against engineering drawings before the trucks arrive.
- 3
Inspector witnesses the pour
The inspector remains on site during the pour, observing the slump test, concrete placement, vibration, and any site conditions that may affect the outcome.
- 4
Same-day report delivered
A comprehensive report covering pre-pour findings and pour observations is delivered the same day, subject to access and availability, with photographs.
See exactly what you get before you book
Our concrete pour witness inspection report includes annotated photos, severity ratings, AS 4349 references and actionable remediation advice. Written in plain language so you can act on it the day you receive it.
- Photo evidence per finding
- Severity rated: critical, moderate, cosmetic
- Australian Standards cross-referenced
- Remediation guidance you can quote
What our concrete pour witness inspections commonly find
Our DefectIndex documents inspection findings across Perth and Sydney. Browse the defect categories most relevant to this type of inspection.
About a concrete pour witness inspection
The Concrete Pour Witness Inspection combines the full Pre-Pour Inspection with on-site attendance during the concrete pour itself. The inspector verifies compliance before the trucks arrive, then observes the slump test and concrete installation in real time.
This service provides the most complete documentation of the slab construction stage. It is particularly valuable for owner-builders, high-value projects, and any situation where the concrete quality may later be called into question. Completed against AS 2870-2011.
You might also need
About concrete pour witness inspection
Do I need both the pre-pour inspection and the pour witness?
The pour witness service includes the full pre-pour inspection. You only need to book one service, it covers both stages.
How long is the inspector on site for the pour?
The inspector attends from the start of the pour until completion of the placement phase. Duration depends on slab size. As a general guide, a standard residential slab pour typically takes 2-4 hours, but your builder will have a better estimate based on the specific slab design and crew size.
What is a slump test and why does it matter?
The slump test measures the workability of the fresh concrete. A value outside the acceptable range can indicate too much water has been added, which weakens the finished concrete. The inspector observes and documents this test.
What happens if defects are found during the pour?
The inspector will note defects in real time and the report will document them with photos. Depending on the defect type, correction may be possible during the pour (e.g. re-vibrating) or may require notification to the engineer.
Is the pour witness service available for commercial slabs?
Yes, a commercial rate applies for commercial or industrial slabs. Contact us to discuss your project.