Since May 2024, every new home in Victoria has needed to meet a minimum 7-star energy standard, and that single number quietly shapes a surprising amount of your Dromana build. Understanding it early helps you plan the design, the budget and the permits without nasty surprises later.
Where the 7-star rule comes from
The requirement sits inside the National Construction Code and is measured using NatHERS, the Nationwide House Energy Rating Scheme. NatHERS models how much energy your home needs to stay comfortable across the year, then awards a star rating out of ten. A higher rating means less heating and cooling is required to keep the living spaces at a pleasant temperature.
For new builds, seven stars is the floor, not a stretch goal. Victoria also layers on a separate “Whole of Home” assessment, which looks at the efficiency of fixed appliances such as hot water, heating, cooling and any solar. So a compliant Dromana home is judged on both its building fabric and the equipment inside it.
Why the rating matters more on the Peninsula
Dromana’s climate is milder than inland Victoria, but it is far from gentle. Homes here contend with strong coastal winds off Port Phillip Bay, salt-laden air, warm summer afternoons and the shading and slope effects that come with blocks near Arthurs Seat. All of these feed into how a design performs.
A well-rated home responds to that setting rather than fighting it. Getting orientation and glazing right means your living areas stay cosy in winter and manageable in summer, which is exactly what the star rating is trying to reward. The same principles apply whether you are building in central Dromana, up the hill in McCrae, or across in Safety Beach and Mount Martha.
What actually drives the star rating
The rating is not about a single expensive gadget. It comes from dozens of design choices working together, and the most influential ones are often the least glamorous.
- Orientation: Positioning main living spaces to capture northern sun while limiting harsh western exposure.
- Glazing: The size, placement and performance of windows, including double glazing where it earns its keep.
- Insulation: Walls, ceiling and floor insulation levels, plus attention to draught sealing.
- Thermal mass and shading: Eaves, pergolas and materials that even out temperature swings.
- Building fabric detailing: Reducing the gaps and thermal bridges that let comfort leak away.
On a sloping or coastal block, these levers interact with wind exposure and views, so the design usually involves a few trade-offs. A skilled draftsperson and energy assessor will test options before anything is locked in.
How it affects cost and the build process
Meeting seven stars can add to upfront costs compared with older minimum standards, though the figure varies widely depending on the design, block and inclusions. As a rough guide, the biggest line items tend to be upgraded glazing and additional insulation rather than exotic technology. The upside is lower running costs and a home that simply feels better to live in year-round.
The energy assessment happens during the design and documentation stage, well before construction. That timing matters, because changing a window schedule on paper is easy, while changing it on site is expensive. A local builder who understands the sequence will fold the assessment into the normal design workflow, and you can see how that fits together on our process page.
Compliance is also tied to the paperwork behind your build. Your registered building practitioner and the domestic building contract should reflect the specified glazing, insulation and appliances, so the home that gets certified matches the one that was rated. This is one reason working with a Victorian Building Authority registered builder who is across current code requirements is worth the effort.
Permits, planning and the Dromana context
The energy rating sits alongside, not instead of, the usual Mornington Peninsula Shire Council planning and building permit process. Depending on your block you may also be dealing with bushfire attack level (BAL) assessments, coastal overlays, or vegetation controls, all of which can influence materials and window choices.
Sometimes these requirements pull in different directions. A BAL rating might steer you toward particular glazing and screening, while the energy assessment has its own preferences, and a coastal setting adds durability concerns around salt and wind. Coordinating these so they complement each other is part of good design, and it is where experience across nearby suburbs like Rosebud, Rye and McCrae genuinely helps. You can read more about how the design and construction work is handled on our services page.
Comfort you can feel, not just a certificate
It is easy to treat the star rating as a box to tick, but the real payoff shows up in daily living. A 7-star home holds its temperature longer, relies less on the air conditioner during a Peninsula heatwave, and stays warmer on a windy winter evening. Lower energy bills are a welcome bonus rather than the whole point.
As a Dromana builder, DARC Building Group approaches the rating as a design opportunity rather than a hurdle, using orientation, shading and sensible material choices to lift comfort without over-capitalising. Done well, a compliant home should feel like a natural fit for its site.
If you are planning a new home in Dromana and want the energy rating handled properly from the first sketch, get in touch to talk through your block and ideas.
Frequently Asked Questions
Is 7 stars compulsory for a new home in Dromana?
Yes. Since May 2024, new homes across Victoria must achieve a minimum 7-star NatHERS rating under the National Construction Code, and this applies to Dromana and the wider Mornington Peninsula. New builds must also pass a separate Whole of Home assessment covering fixed appliances such as hot water, heating and cooling.
How much does meeting the 7-star standard add to build costs?
It varies widely depending on your design, block and inclusions, so any single figure would be misleading. As a rough guide, the main additional costs are usually upgraded glazing and extra insulation rather than expensive technology. These are offset over time by lower heating and cooling bills and a more comfortable home.
When in the build is the energy rating assessed?
The NatHERS assessment is done during the design and documentation stage, before construction starts. This lets you adjust window sizes, glazing performance and insulation on paper, where changes are cheap, rather than on site. The specified items should then be reflected in your building contract and certified plans.
Can a 7-star home still cope with coastal conditions in Dromana?
Yes, and a good design uses the coastal setting to its advantage. Orientation, shading and glazing choices can manage summer heat and coastal winds while keeping living areas warm in winter. Durable, salt-resistant materials and correct detailing help the home perform well and last in the Peninsula environment.