Pre-Slab Stage Inspection Brisbane – Don’t Pour Concrete Over Mistakes

Pre-Slab Stage Inspection Brisbane – Don’t Pour Concrete Over Mistakes

The slab is the foundation of your entire home — literally. If something’s off here, it can affect the whole structure. That’s why a pre-slab inspection is essential before your builder pours the concrete.

At BSPI Inspections, we provide pre-slab inspections in Brisbane and South East Queensland, giving you peace of mind that your build starts right.

What Is a Pre-Slab Inspection?

A pre-slab inspection (also called a slab preparation or base stage inspection) happens after site cut, compaction and formwork are complete — but before concrete is poured.

We check that the site has been prepared properly, in accordance with:

• Approved construction drawings

• The National Construction Code (NCC)

• Relevant Australian Standards (e.g. AS2870 for slabs)

What We Look For During a Pre-Slab Inspection

Here’s what we commonly inspect:

• Site cut and compaction

• Setout accuracy and positioning of footings

• Termite protection systems in place

• Vapour barriers correctly installed and lapped

• Steel reinforcement size, spacing and placement

• Plumbing setouts and drainage

• Formwork condition and slab edges

Even a small issue here — like poor compaction or incorrectly placed steel — can cause slab cracking, drainage issues, or even structural failure later on.

Common Issues We Find at Pre-Slab Stage

These are just a few things we regularly report:

• Inadequate trench compaction

• Damaged or torn vapour barrier

• Exposed reo not tied or supported

• Termite collars not installed or damaged

• Incorrect footing sizes

• Water pooling in trenches before pour

Builders are often in a rush to pour, but if these things are missed, they get locked into the slab forever.

Why Book a Pre-Slab Inspection with BSPI?

We’re fully licensed, independent, and experienced in catching problems before they become expensive fixes. At BSPI Inspections, we inspect builds of all sizes — from standard homes to high-end luxury projects — and give every job the same level of detail.

✅ Independent reporting
✅ Fast turnaround (usually within 24 hours)
✅ Full photo evidence and plain-English explanations
✅ Local knowledge of Brisbane estates, soil types, and builder practices

We’re also big on holding builders accountable — especially for environmental issues like site runoff and rubbish left to blow into neighbouring creeks and bushland.

When Should You Book?

Book your inspection as soon as your builder notifies you the site is ready for slab pour. We’ll liaise directly with the site supervisor to confirm timing.

Don’t skip the foundation check.
Book your pre-slab stage inspection in Brisbane with BSPI today — and start your build on solid ground.

If there’s a specific stage you’d like to learn more about, click the link below to explore that section on our blog.

Pre Slab

Frame Stage

Enclosed Stage

Fixing Stage

Practical Completion / Handover