How Pre‑Purchase Building Inspections Differ for Older Homes vs. New Builds

Whether you’re buying a 1970s brick-and-tile in the inner suburbs or a brand-new home in one of Brisbane’s growth corridors, you need a pre-purchase inspection — but the inspector is looking for genuinely different things in each. The age of the house decides where the risk sits.

Short answer: in an older home a pre-purchase inspection is hunting for the problems that come with age — movement, past repairs, dated wiring and plumbing, and termite history. In a new build it’s checking the quality of the work — the defects and shortcuts that turn up at handover. Both are carried out to the same Australian Standard (AS 4349.1); what changes is where the inspector spends their attention.

At Zoom Building & Pest we inspect both, as a QBCC-licensed company (QBCC licence 15279880) across Brisbane and Moreton Bay. Here’s how the two compare.

What we look for in an older home

Older homes have history, and history is where the expensive surprises hide. A building inspection on an established property focuses on how the building has aged and what’s been done to it over the years:

• Structural movement — cracking, uneven floors, footing and subfloor issues that build up over decades.
• Roof condition — ageing tiles or metal, tired flashing and the repairs that were patched rather than fixed.
• Dated services — old wiring and plumbing that may be near the end of their life.
• Moisture and drainage — rising damp, poor falls and water sitting where it shouldn’t.
• Termite history — past damage and the conducive conditions that come with older timber and established gardens.

What we look for in a new build

A new home should be defect-free, but in practice very few are. On a new build the inspection is about workmanship and completion rather than age — the things a busy site can get wrong under deadline:

• Finishing defects — poor tiling, paint, gaps and trades’ work that wasn’t completed properly.
• Waterproofing — wet areas and balconies, where shortcuts cause leaks within a year or two.
• Roof and drainage — loose tiles, poorly fitted gutters and downpipes that don’t drain.
• Incomplete work — the items quietly left unfinished at handover that you’ll be chasing later.

Same standard, different focus

Both inspections are carried out to AS 4349.1, the Australian Standard for pre-purchase building inspections — a thorough visual assessment of the property’s condition. The difference is emphasis: in an older home we’re weighing up ageing and past work, while in a new build we’re checking quality and completion. Either way you get an independent report on what you’re actually buying.

Should you add a pest inspection?

In Brisbane, yes — regardless of the home’s age. Subterranean termites are active across the region, and new builds aren’t immune: fresh landscaping, slab edges and garden beds against the house all create the conditions termites look for. A combined building and pest inspection covers both condition and timber pest risk in one visit. If you’re weighing it up, here’s which inspection you need.

Book the right inspection

Whether it’s a century-old Queenslander or a freshly handed-over build, we’ll tailor the inspection to the property and give you a clear, honest report. To get started, request a quote or call 0481 826 856.

Frequently Asked Questions

Zoom Building & Pest Inspections is owned and run by Ben Nejad of B N Total Construction Pty Ltd — a QBCC-licensed building and pest inspection company (QBCC licence 15279880) servicing Brisbane and the Moreton Bay region. To book an inspection, call 0481 826 856 or request a quote through our site.