House Extension Permits in Victoria – What You Need to Know

house extension is one of the best ways to create more space and increase the value of your property. Whether you want an extra bedroom, larger living area, or a new home office, an extension can transform your lifestyle. But in Victoria, you cannot start building without the correct permits and professionally prepared drafting plans.

At Building Permit Victoria, we provide expert drafting services for house extensions and manage the entire permit process so your project runs smoothly.

Do You Need a Permit for a House Extension in Victoria?

Yes. In almost every case, a building permit is required for a house extension in Victoria. This is because extensions affect the structural integrity of the home and must comply with the Building Code of Australia (BCA) and Victorian building regulations.

You may also need a planning permit if your property is subject to:

• Heritage overlays

• Bushfire Management overlays

• Flood zones or other council restrictions

It is important to check both permit types before starting your project.

What’s the Difference Between Planning and Building Permits?

• Building Permit: Confirms your extension complies with building regulations and structural safety.

• Planning Permit: Issued by your local council, often required for properties with overlays or zoning restrictions.

In many cases, you will need both. Our team at Building Permit Victoria can determine exactly what is required for your property.

Documents Required for a House Extension Permit

To apply for a house extension building permit, you will usually need:

• Professional drafting plans (site plan, floor plans, elevations, sections)

• Property title and ownership details

• Engineering details (if structural changes are significant)

• Energy rating report

• Completed permit application forms

Common Mistakes Homeowners Make With Extensions

• Starting construction without a permit

• Assuming a builder will handle all paperwork

• Submitting incomplete or incorrect drafting plans

• Not checking for overlays or council restrictions

These mistakes can lead to fines, delays, and even demolition orders.

How Long Does It Take to Get a House Extension Permit?

• Standard extensions: 2–4 weeks

• Complex projects with overlays: 4–8 weeks

Delays usually occur when drafting plans are not prepared correctly, which is why professional documentation is essential.

How Much Does a House Extension Permit Cost?

Permit costs vary depending on the size and complexity of the extension:

• Small extensions: $1,000–$2,500

• Large or multi-level extensions: $2,500–$5,000+

These costs are small compared to the value a compliant extension adds to your home.

Professional Drafting Services for Extensions

At Building Permit Victoria, we offer complete drafting and permit services for all types of house extensions, including:

• Rear extensions

• Second-storey additions

• Living room and kitchen extensions

• Bedroom and bathroom additions

• Home office and studio extensions

Why Choose Building Permit Victoria?

• Specialists in house extension permits

• Fast and accurate drafting services

• Local knowledge of Victorian building codes and council requirements

• Affordable and transparent pricing

Start Your House Extension Project Today

Don’t risk fines, delays, or compliance issues. Our expert team will prepare the right drafting plans and manage your house extension permit application from start to finish.

Contact Building Permit Victoria today to discuss your house extension project and get your permits approved faster.