Originally published January 18, 2016 · Updated November 2025 by Hobart Building Inspections
Across Hobart and Southern Tasmania, it’s very common to find older homes where major DIY alterations, excavation work, or poorly planned renovation attempts have compromised the structural integrity of the building. These issues often aren’t obvious to the untrained eye — yet they can lead to extremely expensive repairs down the track.
One of the most serious examples I still see today involves owners digging out underneath floor systems to “gain more space” or “get an extra room.” At first glance, it may just look like a clever way to increase storage or head height. But what’s actually happening is that soil is being removed that originally supported the subfloor structure — which can destabilise the entire house.
A Real Case Example in Hobart
I recently inspected a property where the rear foundations had been totally undermined. The brick piers were floating with no proper support beneath them. Rooms were uneven, the floors bounced underfoot like a trampoline, and significant cracking had developed in the brickwork. All because someone decided to dig out under the floor without engineering input.
If you’re planning to dig, alter, or modify any structural section of a home — speak to a qualified expert before you do anything.
This is exactly why a pre-purchase building inspection matters in Hobart — especially with older Tasmanian dwellings. Small mistakes and DIY shortcuts from previous owners often become the next owner’s very expensive problem.
The Bottom Line
A professional building inspection helps identify hidden structural faults, poor previous alterations, moisture-related issues, unsafe foundations, and non-compliant works — before you sign a contract. It protects you from unexpected costs and lets you make informed decisions, negotiate properly, or walk away if needed.
Property values are high, insurance doesn’t cover pre-existing hidden defects, and Tasmania still largely operates under buyer beware — so protect yourself early.