Transform Your Home with Trusted Melbourne Extension Builders
Custom rear extensions, second storey additions, and home transformations designed to suit your lifestyle.
Design with us, or supply your own plans
Benefit from our expertise when you work alongside our team to design and build your dream house 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 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 house extension without any of the restrictions or set layouts that volume builders can impose.
Home Extension Builders Melbourne – Custom Extensions & Additions
Looking for experienced home extension builders in Melbourne? At Mastercraft Construction, we specialise in custom home extensions and additions designed to improve space, functionality, and lifestyle without the need to move.
Whether you’re planning a rear extension, second storey addition, or a complete home transformation, our team delivers tailored solutions that suit your home, block, and long-term needs.
We proudly work across Melbourne’s inner eastern and inner-city suburbs including Kew, Hawthorn, Camberwell, Balwyn, Ivanhoe, Surrey Hills, Eltham, and Warrandyte delivering high-quality results built to last.
Book a consultation
Transform Your Home – Speak with an Experienced Melbourne Home Extension Builder Today
Experienced Home Extension Builders You Can Trust
Choosing the right builder is one of the most important decisions when planning a home extension or addition. With over 20 years of experience, Mastercraft Construction has built a reputation as trusted home extension builders in Melbourne, known for quality workmanship and attention to detail.
We understand that every home is different. That’s why we take the time to understand your goals, whether you’re looking to create more living space, add bedrooms, improve natural light, or modernise your layout.
Our team provides a complete, end-to-end service, ensuring your extension is delivered smoothly, on time, and to the highest standard.
Custom Home Extensions & Additions in Melbourne
Every project we deliver is tailored to suit your home and lifestyle. As experienced home addition builders in Melbourne, we design and construct extensions that feel like a natural part of your existing home.
We specialise in:
Rear Home Extensions
Rear extensions are one of the most popular ways to transform your home. By opening up the back of the house, we create modern kitchen, dining, and living spaces that maximise natural light and improve flow.
Second Storey Additions
A second storey addition is ideal if you need more space but want to retain your outdoor area. We design and build upper-level additions that integrate seamlessly with your home while adding bedrooms, bathrooms, or a parents retreat.
Ground Floor Extensions
Ground floor extensions allow you to expand your existing footprint, creating additional living zones, home offices, or functional family spaces.
Custom Home Additions
Whether you need an extra bedroom, study, or multi-purpose space, our custom home additions are designed specifically for your needs and future lifestyle.
Explore all extension types on our Home Extensions Melbourne Page
Extensions vs Moving – Why More Melbourne Homeowners Are Extending
With rising property prices in Melbourne, many homeowners are choosing to extend or add to their existing home instead of moving.
A well-designed extension or addition allows you to:
Stay in the location you love
Avoid stamp duty and moving costs
Increase property value
Customise your home to suit your lifestyle
For many families in suburbs like Hawthorn, Kew, Camberwell, and Balwyn, extending offers a smarter long-term investment than buying a new home.
Why Choose Mastercraft Construction
When selecting a builder, experience and quality matter. Our team is committed to delivering high-end home extensions and additions in Melbourne with a focus on craftsmanship and detail.
We offer:
- Over 20 years of building experience
- Specialisation in extensions and additions
- Strong knowledge of Melbourne council requirements
- High-quality materials and finishes
- Clear communication throughout your project
- Reliable timelines and project management
We don’t just build extensions — we create spaces that enhance how you live.
Our Home Extension Process
We follow a structured process to ensure your home extension project runs smoothly from start to finish.
Consultation
We discuss your goals, ideas, budget, and site conditions.
Custom Design
We create a custom design tailored to your home and lifestyle.
Approvals
We manage all permits and approvals required for your extension or addition.
Construction
Our experienced builders deliver your project with attention to detail and quality craftsmanship.
Completion
Your new space is ready to enjoy, finished to a high standard.
Servicing Melbourne’s Inner Suburbs
We provide home extension and addition services across Melbourne, including:
Kew, Hawthorn, Camberwell, Balwyn, Ivanhoe, Surrey Hills, Eltham, Warrandyte and surrounding suburbs.
Our local experience allows us to navigate council requirements and deliver extensions suited to Melbourne homes.
What our Clients have to say
Lun & Eileen Sui
Victorian period home renovation and extension in Hawthorn East.
We would like to extend our gratitude to Mark and the Mastercraft team following the completion of our family home extension and renovation.
FAQs – Home Extension Builders Melbourne
How much does a home extension cost in Melbourne?
The cost of a home extension or addition depends on size, design, materials, and site conditions. As experienced home extension builders in Melbourne, we provide tailored quotes based on your home and goals, ensuring clarity from the start with no surprises.
Do you handle design and council approvals?
Yes — we manage the entire process, including design, planning, permits, and council approvals. Our experience working across Melbourne ensures everything is handled efficiently and in line with local requirements.
Can I live in my home during the extension?
In many cases, yes — particularly for smaller projects. For larger extensions or structural work, there may be stages where temporary relocation is recommended. We guide you through this during planning.
Will a home extension add value to my property?
Yes — a well-designed extension or addition can significantly improve functionality, lifestyle, and resale value, particularly in Melbourne’s inner suburbs where space and modern layouts are in high demand.
How do I choose the right Melbourne home extension builder?
Choosing the right builder is essential. Look for proven experience, completed projects, and clear communication. Working with established home extension builders in Melbourne ensures your project is managed professionally from design through to construction.
How long does a home extension take?
Most home extensions take between 10–52 weeks, depending on size and complexity. We provide clear timelines upfront so Melbourne homeowners know exactly what to expect throughout the build.
What types of home extensions do you specialise in?
We build rear extensions, second storey additions, and custom home additions, all tailored to suit your home and lifestyle.
Explore all options on our Home Extensions Melbourne page.
What’s the first step to getting started?
The first step is a consultation where we discuss your ideas, budget, and goals. You’ll receive expert advice from experienced Melbourne home extension builders, along with clear guidance on the next steps.
Book your consultation and start your home extension today
Start Your Home Extension in Melbourne
Planning a home extension or addition in Melbourne is a big decision — and choosing the right builder makes all the difference.
At Mastercraft Construction, we deliver custom-designed extensions and additions that improve your home’s space, functionality, and long-term value.
Whether you’re planning a rear extension, second storey addition, or a complete home transformation, our team is here to guide you every step of the way.
Explore our full range of home extension services in Melbourne here.
Ready to Transform Your Melbourne Home?
Speak with our trusted home extension builders today and receive a no-obligation consultation with personalised advice and a clear project plan.
Book Your Consultation Now