When Do You Need Council Approval for Double Glazing in Australia?
Renovating your home can be exciting, but it can also feel overwhelming if you are unsure about council approvals. One of the most common questions we hear is whether you need council approval to upgrade to double glazing.
The answer depends on the type of renovation you are planning.
Do You Need Council Approval?
Start by asking yourself: Will this project involve a structural change to my windows?
• Yes, approval may be needed if you are creating a brand new window opening, enlarging an existing one, or making a significant alteration such as converting an awning window into a bay window.
• No, approval is usually not required if you are simply replacing your existing single glazed windows with double-glazed units of the same size and style.
Because rules differ between councils, it is always best to confirm with your local authority before you begin.
What About Heritage Overlays?
If your property is covered by a heritage overlay, approvals are almost always required.
A heritage overlay is a planning control applied by councils to protect areas, streetscapes, or individual properties with cultural or historical significance. This means your property is in a designated heritage area, and changes such as replacing windows, altering façades, or updating roofing must be carefully assessed.
The goal is to ensure that upgrades do not negatively affect the character of your home or the wider neighbourhood. This is especially common in Melbourne’s inner suburbs, including St Kilda.
Why It Matters for Ecostar Double Glazing
Windows are one of the most visible features of heritage homes, so councils focus heavily on them. They want to ensure that any new installation:
• Matches the existing style, proportions, and sightlines
• Uses materials and finishes that complement the original design
• Maintains the home’s contribution to the overall streetscape
The Good News
If your home does fall under a heritage overlay, that does not mean you cannot upgrade to double glazing. At Ecostar, we regularly work with homeowners in heritage areas. While our frames are uPVC, we offer a range of customisations that are designed to meet council requirements and preserve the character of your home.
