Buying an apartment in Australia is a big financial step, but the quality of the materials used in its construction will determine your comfort, energy bills, and long-term costs more than the floor plan or the view. A 2024 report from the Australian Housing and Urban Research Institute (AHURI) found that many homes are not built for longevity, leading to expensive renovations and poor climate adaptation down the track. High-quality construction lowers energy bills, reduces health risks like mould, and protects your property’s value over time.
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This article is general information only and does not constitute professional advice. For your specific situation, consult a qualified professional.
What you choose to look for in an apartment’s structure and finishes today will directly affect how much you spend on power, repairs, and health-related issues for years. The research points to a few key materials and design choices that make a real difference. Here’s what you actually need to know.
One term you’ll hear a lot when discussing apartment quality is thermal mass.
What I tend to notice is that buyers focus on kitchen benchtops and tapware, but the materials hidden inside the walls and under the floor have a much bigger impact on daily life. The research from AHURI makes it clear that poor insulation and bad orientation are the main culprits for uncomfortable apartments that cost a fortune to run.
What the full cost picture looks like for apartment materials
The purchase price of an apartment is only the beginning. The materials used in its construction determine your ongoing costs in ways that aren’t always obvious at first glance. A building with poor insulation might look cheaper upfront, but you’ll pay for that saving every quarter on your energy bill.
Consider an apartment with single-glazed windows and minimal wall insulation. In a city like Melbourne or Sydney, that means running the heater for more months of the year and still feeling a draught. The AHURI report highlights that well-insulated homes designed for natural light and ventilation reduce power bills significantly. That’s not a small saving — it’s hundreds of dollars a year that add up over a decade.
Then there’s the cost of repairs. Materials that don’t handle moisture well lead to mould, rotting frames, and peeling paint. Fixing these issues isn’t cheap, and in a strata building, you might be sharing those costs with other owners through special levies. The research notes that high-quality construction prevents expensive repairs and protects your home’s value long-term. That’s worth weighing against a slightly lower purchase price for a unit built with cheaper materials.
If you’re looking at an older apartment, check what materials were used in the original build. Some older buildings used solid brick construction with good thermal mass, which can outperform modern lightweight builds that cut corners on insulation. A set of thermal curtains can help with temperature control, but it won’t fix a fundamentally poorly insulated building.
Common mistakes buyers make about apartment materials
Ignoring the building’s orientation
An apartment can have the best materials in the world, but if it faces the wrong direction for your climate, you’ll struggle to keep it comfortable. The AHURI research specifically calls out bad orientation as a cause of discomfort in summer and winter. A north-facing apartment in Brisbane might bake in the afternoon sun, while a south-facing unit in Melbourne might never warm up. Look at where the sun hits the windows at different times of day before you commit.
Assuming all insulation is the same
Not all insulation performs equally. Some apartments use minimum-grade insulation that meets the building code but doesn’t do much for comfort. The research shows that well-insulated homes reduce power bills and carbon footprint, but that only applies if the insulation is thick enough and properly installed. Ask the seller or agent for details on the insulation type and R-value (a measure of thermal resistance). If they can’t provide it, that’s a red flag.
Overlooking ventilation systems
Mould is a serious problem in Australian apartments, especially in bathrooms and kitchens. The AHURI report links proper ventilation to reduced dampness and better physical and mental health. Many modern apartments have mechanical ventilation systems, but they need to be maintained. Check if the exhaust fans work, if there are windows that open, and if the building has any history of moisture issues. A small dehumidifier can help in a pinch, but it’s no substitute for a building designed to breathe properly.
Focusing on finishes instead of structure
It’s easy to be impressed by stone benchtops and glossy floorboards, but those are cosmetic. The materials that matter are the ones you can’t see: the wall insulation, the window glazing, the roof and wall cladding, and the waterproofing in wet areas. The AHURI research emphasises that houses not designed for longevity lead to expensive renovations later. That applies to apartments too. A beautiful kitchen won’t help you if the building has a leaky roof or poor thermal performance.
How to assess apartment materials and design before you buy
Check the building’s energy rating
In Australia, new apartments must have an energy rating under the Nationwide House Energy Rating Scheme (NatHERS) or a similar compliance pathway. This rating tells you how well the building performs in terms of heating and cooling. A higher rating means better insulation, smarter window placement, and more efficient design. Ask for the energy rating certificate before you make an offer. If the rating is low, you’ll be paying for that inefficiency every month.
Look at the window and glazing quality
Windows are one of the biggest sources of heat loss and gain in an apartment. Single-glazed windows are common in older buildings but perform poorly. Double or triple glazing makes a massive difference to comfort and energy bills. The frame material matters too — aluminium frames conduct heat, while timber or uPVC frames are better insulators. If the apartment has large windows, check whether they’re shaded by eaves, trees, or external blinds to reduce solar gain in summer.
Examine the wall and floor construction
Solid brick or concrete walls offer good thermal mass, which helps regulate temperature. Lightweight construction (timber frame with cladding) is cheaper but doesn’t store heat as well. For floors, concrete slabs on ground level can feel cold in winter, while suspended timber floors might be noisier. The AHURI research notes that materials and designs must consider climate, comfort, and future adaptability. Think about how the apartment will feel in both summer and winter, not just on the day you inspect it.
Understand the strata report on building materials
The strata report will tell you about any major repairs or maintenance issues in the building. Look for mentions of waterproofing failures, roof leaks, or cladding problems. These are direct indicators of material quality. If the building has had repeated issues with moisture or structural defects, the materials used were likely inadequate. A property lawyer or conveyancer can help you interpret the strata documents and flag any material-related risks before you sign.
Consider future regulatory changes
Building standards in Australia are evolving. The AHURI report is part of a national push to improve housing quality, and future regulations may require higher energy performance or better material standards. Buying an apartment built to current minimum standards might leave you with a property that’s harder to sell or rent out in a decade. Look for buildings that go beyond the bare minimum — they’re more likely to hold their value and cost less to maintain.
| Material or Design Feature | What It Does | Why It Matters for Longevity |
|---|---|---|
| High-quality insulation (high R-value) | Reduces heat transfer through walls and roof | Lowers energy bills and keeps indoor temperatures stable year-round |
| Double or triple glazing | Minimises heat loss through windows | Prevents draughts and reduces heating/cooling costs significantly |
| Solid brick or concrete walls | Provides thermal mass | Absorbs heat during the day and releases it at night, stabilising temperature |
| Proper ventilation system | Removes moist air and pollutants | Prevents mould growth and improves indoor air quality and health |
| Climate-appropriate orientation | Maximises natural light and passive heating/cooling | Reduces reliance on artificial heating and cooling, saving money |
Frequently asked questions about apartment materials and longevity
What is the most important material for apartment longevity? ▾
Can I improve an apartment’s thermal performance after purchase? ▾
How do I find out what materials were used in an existing apartment? ▾
Are newer apartments built with better materials than older ones? ▾
Does apartment orientation really affect material performance? ▾
What should I look for in a strata report regarding materials? ▾
Why material quality will matter more in the years ahead
The AHURI report signals a shift in how Australia thinks about housing quality. Inconsistent regulations and design shortcomings are being addressed at a national level, which means future building standards will likely be stricter. Apartments built with high-quality materials and climate-ready design today will be easier to sell, rent, and insure tomorrow. Those built to the bare minimum may face higher costs and lower demand as expectations rise.
Remember: this article is general information only. For advice on your specific situation, speak to a qualified professional.
If this was useful, you might also want to read Understanding Maintenance Costs for Apartments in Australia.
Sources and Further Reading
10 Tips for Choosing an Energy-Efficient Condo in Australia — Practical advice on what to look for when assessing an apartment’s energy performance.
Hidden Costs of Apartment Ownership: Prepare Your Budget Now — A breakdown of the ongoing expenses that come with apartment living, including those tied to building quality.
Australian Housing and Urban Research Institute (2024). A National Roadmap for Improving the Building Quality of Australian Housing Stock. 🔗
