What Does a Building Inspection Actually Cover? A Room-by-Room Breakdown

Most buyers know they need a building inspection. Fewer know exactly what it covers. That gap matters, because the scope of an inspection determines what risks it catches — and what it doesn’t.

This guide walks through every area a thorough building inspection covers, room by room and zone by zone, using Australian Standard AS4349.1 as the baseline. It also covers what falls outside that scope, and where Gold Coast Building Inspector goes further.

What Is a Building Inspection Actually Doing?

A standard pre-purchase building inspection is a visual, non-invasive assessment of all safely accessible areas of the property. The inspector isn’t opening walls, pulling up floor tiles, or testing your switchboard. They’re using their eyes, experience, and equipment to assess what’s visible and identify defects — structural, moisture-related, or safety-critical — that could affect your decision to buy.

In Australia, the standard that governs pre-purchase inspections is AS4349.1.¹ It defines what areas must be inspected and what constitutes a “readily accessible” area. Most inspectors work within this standard. Gold Coast Building Inspector exceeds it, covering additional defect categories that AS4349.1 doesn’t require but that routinely come up in price negotiations.

Starting Outside: The Exterior Inspection

A thorough inspection begins before the inspector even sets foot inside. The exterior tells a story — drainage issues, structural movement, water damage pathways — that can explain what you find inside.

What Happens in the Roof Space?

If the roof void has an access opening of at least 600mm x 600mm,¹ the inspector goes in. This is one of the most revealing parts of the inspection — and one of the first places many cheaper inspectors skip if conditions are tight, hot, or uncomfortable.

• Roof framing: rafters, trusses, battens, and structural members
• Sarking and underlay condition
• Insulation coverage and condition
• Evidence of water ingress (staining, wet timbers, efflorescence on brickwork)
• Ventilation adequacy
• Evidence of termite activity or timber pest damage (distinct from a pest inspection — visual evidence only)
• Any services running through the roof space (visible only)

Under the House: The Subfloor Inspection

On timber-framed or elevated homes, the subfloor inspection is arguably the most important part of the whole assessment. It’s also the most commonly skipped, because it requires physically crawling through a small opening — minimum 400mm x 600mm¹ — into a space that may be dark, damp, and cramped.

• Timber stumps and piers: condition, settlement, and verticality
• Bearers and joists: structural integrity, any notching or damage
• Moisture levels and evidence of standing water
• Subfloor ventilation: adequate cross-flow to prevent rot and condensation
• Evidence of termite tracks, termite workings, or frass (visual only)
• Plumbing visible under the floor: pipes, connections, and drainage
• Any previous repair work in the subfloor area

If the subfloor is inaccessible — fully concreted, or the opening is too small — the inspector must note this limitation in the report. A report with no mention of the subfloor, without noting access was unavailable, is a red flag.

Inside the Home: Room by Room

Every accessible room is inspected. That means every door gets opened. Every window gets operated. Every tap gets run. Here’s what gets checked in each area.

What a Building Inspection Does NOT Cover

This is just as important to understand as what is covered. A building inspection is a visual, non-invasive assessment. It cannot tell you everything. Knowing the limits upfront prevents surprises after the report lands.

Where Gold Coast Building Inspector Goes Further

AS4349.1 sets the minimum. Gold Coast Building Inspector exceeds it in several areas that consistently come up in defect lists and price negotiations.

• Two technicians per inspection. One inspector working alone accumulates roughly 1 hour of inspection time on a standard house. Our two technicians accumulate approximately 3 hours combined. Read more about how long a building inspection takes and why it matters.
• Licensed current builders. Our inspectors hold active QBCC licences and regularly build and renovate homes in the Gold Coast area. They recognise defects from experience — including defects outside the AS4349.1 scope that carry real cost implications.
• Verbal debrief on site. After the inspection, your inspector walks you through the property and shows you each significant finding in person.
• Cost estimates for defects. Our reports include repair cost estimates, which gives you a real negotiating tool. A defect estimate report can also be requested separately to support price renegotiation.
• Additional defect categories. We inspect several areas that AS4349.1 does not specifically require but that consistently produce significant defects in the Gold Coast’s subtropical climate.

What Happens After the Inspection?

Once the on-site inspection is complete, a written report is delivered within 24 to 48 hours. The report classifies defects by severity and documents every significant finding with photographs. Here’s how to use it:

• Major defects require immediate attention and should factor directly into your purchase decision. Use the report to request repairs, negotiate a price reduction, or withdraw from the contract.
• Minor defects need attention but don’t threaten structural integrity. Use them to build a maintenance plan.
• Maintenance items are general upkeep tasks that help you understand the ongoing cost of ownership.
• Limitations tell you what the inspector couldn’t see. If a limitation is significant, consider whether you need an invasive inspection before proceeding.

The inspection report isn’t the end of the process. It’s the document that tells you what your next conversation with the vendor, your conveyancer, or your solicitor needs to be about.