You might want to open up the back of the house, add a second storey, or rework a floor plan that no longer suits your family. Before you start, answer one question: do you need a building permit?
In Victoria, the short answer is usually yes. Building work generally requires a permit unless a specific exemption applies. Knowing this early helps you avoid delays and makes sure your project is properly documented before construction starts.
What Is a Building Permit?
A building permit is written approval to proceed with building work. A building surveyor issues it and confirms the proposed work complies with Victoria’s building legislation.
The permit documentation may include architectural drawings, engineering, specifications and other supporting information. It can also set out mandatory inspections that must happen during construction.
Work requiring a permit must not start until the permit is issued.
When Is a Building Permit Required?
Building work includes constructing, altering, repairing, enlarging, extending or demolishing a building. For homeowners, a permit is usually needed when a project changes the home’s structure or footprint. Common examples include:
- Home extensions and second-storey additions
- Removing or altering load-bearing walls
- Major structural renovations
- Certain changes to windows and external openings
- Some decks and verandahs
- Demolition or partial demolition as part of a renovation
Exemptions do exist, so confirm the requirements for your specific project rather than assuming either way.
Do You Need a Permit for a Home Renovation?
Not always. It depends on the type and extent of the work.
Some minor, non-structural work may be exempt if it doesn’t affect the building’s structural soundness or the safety of occupants or the public. A substantial renovation is different. Reconfiguring the floor plan, creating new openings, modifying structural walls or rebuilding parts of the home will very likely need a permit.
If your renovation is heading in that direction, look into permit requirements during design, not when you’re ready to build.
Do You Need a Permit to Remove a Wall?
It depends on the wall. Removing or altering a load-bearing wall is structural work. It needs proper design and assessment, often with new beams, lintels, or posts to carry the loads the wall once supported.
This is why a simple request to “open up the kitchen and living room” can become a significant structural project. A building professional should confirm whether the wall is structural, and what engineering and approvals are needed, before any work begins.
Do Home Extensions Need a Building Permit?
Yes, almost always. An extension enlarges the building and adds floor area, whether it’s a rear extension, extra bedrooms, a new kitchen and living zone, or a connection to outdoor living.
Extensions typically need detailed plans and structural engineering before a permit can be issued. Depending on the property, other approvals may also apply.
What About Second-Storey Extensions?
A second storey will generally require a building permit. Adding a level means assessing the existing home as much as the new work, including:
- Existing foundations, walls and framing
- New structural loads
- Floor, roof and staircase design
- Energy-efficiency and fire safety requirements
The condition of your existing home can strongly influence how a second storey is designed and built.
Building Permit vs Planning Permit
These are two different approvals.
A building permit covers construction and compliance with building requirements. A planning permit covers land use and development under the local planning scheme.
Your project might need a building permit, a planning permit, both, or occasionally neither. Planning requirements depend on factors such as your zone, overlays and heritage controls.
If a planning permit is required, you must obtain it before the building permit is issued, and the building permit must be consistent with it. This is one of the main reasons to investigate planning early.
Heritage Homes
If a Heritage Overlay covers your property, some alterations, additions or demolition may need planning approval.
That doesn’t mean a heritage home can’t be renovated or extended. It means the design needs to respond to the property’s heritage significance. Early investigation helps clarify what to retain and how a contemporary addition can sit comfortably alongside it.
Who Organises the Building Permit?
The property owner appoints the building surveyor, though an authorised person may act on their behalf. For domestic building work, the builder cannot appoint a private building surveyor for the owner.
Your building contract should clearly state who is responsible for obtaining the building and planning permits.
A typical project team for a substantial renovation or extension may include a builder, architect or building designer, building surveyor, structural engineer, energy assessor and land surveyor.
What Happens After the Permit Is Issued?
The permit allows approved work to begin, but the approval process continues. The building surveyor may require mandatory inspections at set stages, and construction must follow the approved documentation.
That’s why on-site changes need careful consideration. Any change that affects the approved documentation may need to go back through the surveyor.
Can You Start Before the Permit Is Approved?
No. If the work requires a permit, don’t start construction until it’s issued. Starting early and sorting out approvals later can create serious complications—secure approvals during pre-construction.
Official Victorian Building and Planning Resources
Building and planning requirements can vary depending on the property, proposed work and applicable planning controls. If you’re researching the approvals that may apply to your renovation or extension, the following Victorian Government resources provide further information:
Building and Plumbing Commission – When Is a Building Permit Required?
Guidance on when a building permit is required in Victoria, including examples of building work and permit exemptions.Planning Victoria – Applying for a Planning Permit
Information about Victoria’s planning permit process, including when a planning permit may be required and the steps involved in applying.
For substantial renovations and extensions, it is important to establish the relevant building and planning requirements early in the project. A building surveyor, relevant council and other appropriately qualified professionals can provide advice specific to your property and proposed works.
When Should You Speak to a Renovation or Extension Builder?
For a substantial renovation or extension, involving an experienced builder early can be valuable.
Early builder input can help identify practical construction considerations, understand the existing building, discuss the likely scope of work and ensure the proposed design is realistic to construct.
This can be particularly important for projects involving:
- Structural alterations
- Older and period homes
- Significant floorplan changes
- Whole-home renovations
- Ground-floor extensions
- Second-storey additions
- Renovations combined with extensions
At Elevate Building Group, we work with homeowners, architects, designers and other project professionals to deliver substantial renovations and extensions across Melbourne.
When Should You Talk to a Builder?
For substantial projects, the earlier the better. Early builder input helps you understand your existing home, test the scope of work, and make sure the design is practical to build. This matters most for structural alterations, period homes, whole-home renovations, and projects combining renovation with an extension.
At Elevate Building Group, we work alongside homeowners, architects and designers to deliver substantial renovations and extensions across Melbourne. If you’re thinking about transforming or extending your home, get in touch to talk through your project and next steps.
This article provides general information about building permits in Victoria and is not legal, planning or building surveying advice. Permit requirements depend on your property and the proposed work. Confirm requirements with your council, a registered building surveyor or another qualified professional before starting building work.
