Where to Start Renovating an Older Australian Home

When you first walk through an older Australian home that needs work, the impulse is often to start with what’s visible and bothers you most. A dated kitchen, tired bathrooms, worn carpets. But I’ve learned over many years that this approach usually leads to wasted money, disrupted work, and discovering problems mid-project that should have been identified at the start.

The real beginning isn’t about aesthetics or comfort upgrades. It’s about understanding what you’re actually dealing with – what’s sound, what’s failing, and what might fail soon. Older Australian homes, particularly those built before the 1980s, come with specific vulnerabilities. Asbestos in insulation, roofing, and floor tiles. Timber framing that’s been exposed to moisture or termites. Electrical systems that are undersized for modern loads. Plumbing that’s corroded or blocked. These aren’t always obvious until you look.

The first real step is a thorough inspection, and I mean thorough. Not a quick walk-through by a builder who’s eager to quote you a job. You need someone who will spend time in the roof space, under the house, checking timber for soft spots, looking at how water moves around the building, testing electrical circuits. This costs money upfront, but it saves far more later. I’ve seen renovations that cost an extra 40 percent because structural issues weren’t caught early, or because asbestos removal had to be retrofitted into an already-started project.

What Older Australian Homes Actually Tell You

Once you’ve had a proper inspection, you’ll have a clearer picture. But interpretation matters. A house built in 1960 with original timber framing and no visible rot isn’t automatically a problem. Many of these homes were built with good-quality timber and have survived well. What matters is the specific conditions: has the timber been kept dry, is there adequate ventilation, are there signs of active moisture or pest damage?

Roof condition is usually a reliable indicator of overall maintenance history. If the roof is original and leaking, water has likely been finding its way into walls and ceilings for some time. If it’s been replaced recently but the gutters are blocked and the downpipes discharge onto the ground next to the house, you’re looking at ongoing moisture problems. These patterns tell you whether the previous owners maintained the place or let it deteriorate.

Electrical systems in homes from the 1960s and 1970s were often installed with the assumption that households would use far less power than they do now. You’ll frequently find switchboards that are full or overloaded, wiring that’s undersized for modern appliances, and earthing that doesn’t meet current standards. This isn’t a cosmetic issue – it’s a safety and functionality issue that needs addressing before you add new circuits for renovated spaces.

The Foundation Question

Foundations in older Australian homes vary widely depending on age and location. Pre-1920s homes often sit on shallow brick or stone footings with minimal depth. Homes from the 1920s through 1960s typically have concrete footings, but the depth and quality vary. Some houses have settled unevenly over decades. You’ll see cracks in walls, doors that don’t close properly, or floors that slope noticeably.

Not every crack means the house is failing. Hairline cracks in plaster are normal and usually cosmetic. Wider cracks in brickwork, particularly if they’re stair-stepped or follow mortar joints, suggest movement. If you see cracks that are actively growing (you can monitor this by marking the crack and checking it monthly), that’s worth investigating further. In many cases, poor drainage around the house is the culprit – water softens the soil, the house settles slightly, and cracks appear. Fix the drainage, and the movement often stops.

If the inspection reveals significant structural movement or foundation issues, you need a structural engineer’s assessment before you plan major renovations. This is non-negotiable. Renovating a kitchen in a house with an unstable foundation is putting money into something that might need serious remedial work in five years.

Asbestos and Hidden Materials

I mention asbestos specifically because it’s genuinely common in Australian homes built before the 1980s, and it changes how you approach renovation. Asbestos insulation in roof spaces, asbestos cement in eaves and gutters, asbestos floor tiles, asbestos in pipe lagging. If you’re planning to renovate, you need to know where it is. Some of it can be left in place if it’s undisturbed and well-maintained. Some of it needs professional removal before you can work in that area.

A licensed asbestos assessor can identify it for you. This costs a few hundred dollars and is money well spent. I’ve seen people start demolition work and discover asbestos halfway through, which then requires stopping work, bringing in licensed removalists, and dealing with disposal. It’s far better to know upfront.

Prioritisation Based on Function

Once you understand the state of the house, prioritisation becomes clearer. The hierarchy I’ve observed is roughly this: first, address anything that affects the integrity of the building or safety. Roof leaks, structural movement, electrical hazards, active termite damage. Second, address systems that are failing or will fail soon – plumbing, heating, cooling. Third, address systems that are inefficient or outdated but still functional. Fourth, cosmetic and comfort upgrades.

This sounds obvious, but it’s easy to get pulled away from it. You see a beautiful bathroom design and want to start there. But if the roof is leaking and water is running down the walls, that bathroom renovation will be disrupted by the roof work, and you might discover water damage in the walls that needs addressing.

In practice, you often bundle work together. If you’re replacing the roof, that’s a good time to upgrade the guttering and downpipe system. If you’re replacing plumbing, you might upgrade the water pressure and drainage at the same time. If you’re rewiring the house, you can plan for additional circuits for renovated spaces. This reduces disruption and often costs less than doing these things separately.

Moisture and Ventilation

Moisture is the enemy of older homes. It rots timber, corrodes metal, promotes mold, and damages plaster. Many older Australian homes have poor ventilation by modern standards. Subfloor spaces that are enclosed and damp. Roof spaces that are insulated but not ventilated. Bathrooms and kitchens without adequate exhaust fans. When you renovate, addressing ventilation is often overlooked because it’s not glamorous, but it’s fundamental to the longevity of the work you’re doing.

If you’re installing new insulation in a roof space, you need to ensure there’s airflow. If you’re upgrading a bathroom, you need an exhaust fan that actually moves air outside, not just into the roof space. If the subfloor is damp, you need to improve drainage and possibly add ventilation before you do anything else.

After years of working with older homes, I’ve found that the ones that age well are the ones where moisture is managed properly. The ones that deteriorate are usually the ones where water is allowed to sit or accumulate. It’s a simple principle but it shapes every decision about how you approach renovation.

Starting a renovation in an older Australian home is really about starting with clarity. Know what you have, understand what’s sound and what’s vulnerable, and let that knowledge guide your decisions. The temptation to jump straight to the visible improvements is strong, but the homes that end up being genuinely improved – not just cosmetically updated – are the ones where the foundation work is done first.

Garnaut Review Editorial Team
Garnaut Review Editorial Team

The Garnaut Review Editorial Team publishes independent analysis of climate change, energy, sustainable homes and Australia’s economic future. Contemporary articles draw on government data, primary sources and the historical Garnaut Climate Change Review archive. The publication is independent and is not affiliated with Ross Garnaut, the Australian Government or the original Garnaut Climate Change Review.