Rear House Extensions Melbourne – Custom Rear Extension Builders
Design with us, or supply your own plans
Benefit from our expertise when you work alongside our team to design and build your dream rear home addition. Our personalised approach means you can bring your own design ideas or provide architectural plans and enjoy the ease of our end-to-end building service.
Guaranteed craftsmanship
With over 20 years in the housing industry, we’re established rear home extension builders in Melbourne that you can rely on. Our passion for building tailored high quality home addition’s and our 10-year structural guarantee gives you piece of mind allowing you to enjoy your brand new custom home for years to come.
Personalised approach
Our low-volume custom-designed building approach is streamlined, simplified and stress free. You’ll work directly with a boutique builder to plan and build a quality rear house extension without any of the restrictions or set layouts that volume builders can impose.
Transform Your Home with a Rear Extension
Rear home extensions are one of the most effective ways to transform your Melbourne home, creating open-plan living spaces that improve functionality, natural light, and connection to outdoor areas. Whether you’re extending for more space or a better layout, a well-designed rear extension can significantly enhance both lifestyle and property value.
Often referred to simply as rear extensions, these projects are ideal for opening up the back of your home into a spacious, light-filled living area that connects seamlessly with your outdoor space.
Across suburbs like Hawthorn, Templestowe, Northcote, Clifton Hill, Kew, Ivanhoe and Thornbury, homeowners are investing in rear extensions to create open-plan living, increase natural light and enhance property value.
A well-designed rear extension allows you to completely reimagine your layout while maintaining the character and street appeal of your existing home.
Book a consultation
Book a consultation to discuss your rear extension ideas, budget and timeline.
Why Rear Extensions Are Ideal for Melbourne Homes
Many Melbourne homes—especially Victorian, Edwardian and terrace properties—have underutilised backyard space. A rear extension unlocks that potential while preserving the original façade.
Key Benefits of Rear House Extensions
- Create open-plan kitchen, dining and living areas
- Improve indoor-outdoor flow with alfresco integration
- Maximise natural light with large windows and skylights
- Retain heritage street appeal while modernising the rear
- Add significant long-term resale value
Rear extensions are particularly suited to inner Melbourne suburbs where space is limited but backyard depth allows for expansion.
How much does a Rear Extension Costs in Melbourne?
Understanding the cost of a rear extension is an important first step when planning your project.
Typical Cost Guide
Standard rear extensions: $2,000 – $3,000 per m²
Architectural or high-end builds: $3,000 – $3,500+ per m²
What Affects the Cost?
- Size and scale of the extension
- Structural modifications to the existing home
- Site access (common challenge in inner suburbs)
- Material quality and finishes
- Custom features such as skylights, glazing and joinery
We provide clear, itemised quotes so you understand exactly what you’re investing in before construction begins.
Popular Rear Extension Ideas & Designs
Open-Plan Living Extensions
Removing internal walls and extending outward creates a modern, spacious environment ideal for family living and entertaining.
Indoor-Outdoor Alfresco Integration
Large sliding or bi-fold doors connect your indoor living area to a deck, courtyard or alfresco zone—perfect for Melbourne’s lifestyle.
Glass & Architectural Rear Extensions
Modern rear extensions often feature:
- Floor-to-ceiling windows
- Skylights and roof glazing
- Feature ceilings and architectural details
These elements maximise natural light and create a contemporary finish.
Rear Extensions for Period Homes
We specialise in blending modern rear extensions with heritage homes across Hawthorn, Carlton and Collingwood—preserving character while delivering a striking, functional contrast.
Custom Designed for Your Home and Block
Every rear house extension we build is tailored to your specific property, lifestyle and long-term goals.
Our Design Approach
- Analyse site orientation for natural light optimisation
- Improve layout flow and functionality
- Select materials that complement the existing home
- Ensure full compliance with Melbourne council regulations
The result is a cohesive extension that feels like a natural part of your home.
Rear Extension vs Second Storey Extension
Not sure whether to extend out or build up? Here’s how they compare:
Rear Extensions
- More cost-effective in most cases
- Strong connection to outdoor spaces
- Ideal for open-plan living
- Simpler construction process
Second Storey Extensions
- Suitable for smaller blocks
- Adds significant floor space
- Higher construction and engineering costs
- More complex approvals
For many Melbourne homeowners, a rear extension offers the best balance of cost, lifestyle and return on investment.
Our Rear Extension Process in Melbourne
We follow a clear, structured process to make your rear extension a simple and stress-free.
Consultation
We discuss your goals, ideas, budget and timeline.
Custom Design
Custom plans are created to suit your home, block and vision.
Approvals
We manage planning permits and building approvals across all Melbourne councils.
Construction
Our experienced builders deliver high-quality workmanship with clear timelines.
Completion
Your new rear extension is finished to a high standard—ready to enjoy.
Designed for Melbourne Living
We design rear extensions specifically for Melbourne’s climate and lifestyle.
- Passive solar design for energy efficiency
- Cross ventilation for comfort
- Durable, climate-appropriate materials
- Layouts that maximise natural light year-round
From inner-city suburbs like Northcote, Eaglemont, and Ivanhoe to family areas like Doncaster and Montmorency, each project is tailored to its environment.
Why Choose Us as Your Rear Extension Builders in Melbourne?
What Sets Us Apart
- Experienced rear extension builders in Melbourne
- Proven track record across inner and eastern suburbs
- Custom, architecturally driven designs
- High-quality finishes and attention to detail
- Transparent communication from start to finish
We don’t deliver standard extensions—we create tailored spaces designed to enhance how you live.
What our Clients have to say
Glenn & Arianne Kralik
Cream clinker brick home extension in Heidleberg Heights.
Mastercraft Construction has recently completed our dream extension in Heidelberg Heights. We purchased our property 10 years ago with the grand plan to extend. After finally deciding to proceed we approached several builders in our area. To appoint Mastercraft Construction was an easy one for us.
Frequently Asked Questions About Rear Extensions
Can I extend the rear of my house in Melbourne?
Yes, rear extensions are the most common type of home extension in Melbourne. They are generally easier to design and approve compared to front extensions, as they have less impact on the streetscape. Most properties can accommodate a rear extension, subject to council requirements and site conditions.
Do I need council approval for a rear home extension?
In many cases, yes. Depending on the size and design, a planning permit may be required, along with a building permit. Some smaller extensions may fall under complying development, but it’s important to confirm this early. An experienced builder can guide you through approvals and ensure everything is compliant.
How far can I extend the back of my house?
The allowable extension depends on your block size, zoning, and private open space requirements. Councils typically require a minimum amount of backyard space to be retained. A site assessment will determine how far you can extend while meeting regulations.
What is the best layout for a rear extension?
Most homeowners opt for an open-plan layout that combines the kitchen, dining, and living areas. This creates a more functional and modern space with better natural light and flow. The best layout will depend on your home’s existing structure and your lifestyle needs.
Can I open up the back of my house for an open-plan extension?
Yes, many rear extensions involve removing walls to create large open-plan spaces. This often requires structural support such as beams, but it is a common and effective way to transform older homes into modern living spaces.
Do rear extensions work well for period homes?
Yes, rear extensions are ideal for period homes as they allow you to preserve the original façade while creating a modern living space at the back. This approach is very common across Melbourne’s Victorian and Edwardian and Californian Bungalow homes.
Will a rear extension add value to my home?
Yes, rear extensions are one of the most effective ways to increase property value. Expanding living areas and improving layout can significantly enhance both functionality and resale appeal, particularly in Melbourne’s inner suburbs.
How much does a rear home extension cost in Melbourne?
Costs vary depending on the size, design, and finishes. Rear extensions can range significantly, especially if structural work, kitchens, or large open-plan areas are involved. The best way to understand costs is with a tailored quote based on your home and goals.
How long does a rear home extension take to build?
Most rear extensions take between 10–32 weeks, depending on complexity. Larger or more detailed projects may take longer. A clear construction timeline will be provided before work begins.
Can I live in my home during a rear extension?
In many cases, yes. Rear extensions allow you to remain in the front part of the house while construction takes place at the back. However, there may be stages where temporary relocation is recommended.
What type of rear extensions are most popular?
Open-plan kitchen and living extensions, indoor-outdoor living spaces, and extensions with large sliding or bi-fold doors are among the most popular. These designs maximise natural light and create a strong connection to outdoor areas.
What’s the first step to planning a rear home extension?
The first step is to assess your home, block, and goals. Speaking with experienced Melbourne rear home extension builders early in the process helps you understand what’s possible and ensures a smooth path from design to construction.
Get a Quote for Your Rear House Extension in Melbourne
If you’re planning a rear house extension or rear extension in Melbourne, our team can help you design and build a solution tailored to your home and lifestyle.
From initial ideas through to construction, we manage the entire process—delivering high-quality results with clear timelines and expert guidance.
We work across Melbourne including Hawthorn, Balwyn, Thornbury, Heidleberg, Eltham, Warrandyte and surrounding suburbs.
Learn more about our full range of home extension services in Melbourne here.
Ready to start your rear extension?
Book your consultation today and take the first step toward transforming your home.