Designed with intent. Built with care. Crafted to last.

House Extensions Melbourne

Seamless additions, thoughtful design, and quality that feels like it’s always been there.

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15+ years of experience across Melbourne

Architect-aligned building standards

Registered Builder & Master Builders Victoria member

Transparent quoting & realistic timelines

A reputation for precision & quality

15+ years of experience across Melbourne

Registered Builder & Master Builders Victoria member

Looking for house extensions Melbourne homeowners consistently recommend?

At DMI Build, we design and deliver house extensions Melbourne homeowners trust that feel like they’ve always been part of your home, not an afterthought. Whether it’s a second-storey addition or a ground-floor expansion, we combine structural expertise, architectural precision and transparent communication to make the process clear and the outcome seamless.

Our team has built home extensions across Melbourne for more than 15 years. Every project is guided by detail, communication, and long-term value so your extension not only looks right but lives beautifully for decades.

Start Your Extension

Detailed quoting, no surprises

Realistic timelines and proactive updates

One point of contact from planning to handover

15+ years of residential construction experience

Registered Building Practitioner & Master Builders Victoria member

House Extensions Melbourne: What We Build

Every extension is carefully planned in collaboration with you (and your architect, if applicable) to ensure the design not only looks right but lives well. We deliver tailored home extensions in Melbourne, aligned with your needs, lifestyle and architectural intent.

Ground-Floor Rear & Side House Extensions Melbourne

Add functional space — kitchens, living, dining, or a new suite — integrated with your current layout and services.

Additional Bedrooms & Bathrooms

Create comfort and privacy with functional, well-placed additions.

Flexible Rooms & Home Offices

Multi-purpose rooms that adapt as life changes — work now, retreat later — with acoustics, storage and light considered upfront.

Second-Storey Additions Melbourne

Go up to gain bedrooms, bathrooms or a parents’ retreat without losing yard space. Smart structural planning minimises disruption.

Kitchen & Living Area Expansions

Open, light-filled areas designed for daily living and entertaining. We focus on flow, durability and detail.

Alfresco & Outdoor Living Areas

Extend your lifestyle outdoors with decking, pergolas and indoor–outdoor transitions that actually work year-round.

Planning Your House Extension: Common Questions

We answer these questions every week, here’s what Melbourne homeowners usually want to know:

Still have a question?

 

If your question isn’t listed here, we’re happy to help.

Send us a message and we’ll get back to you with answers specific to your home.

Ask a question

Four Simple Steps to Get Your Extension Underway

Building or extending a home doesn’t have to be complicated. We guide you through every stage with clear communication, expert advice, and no surprises along the way.

If you’re ready to begin or still figuring things out, we’ll help you take the next step with confidence.

Tap on each step to see description.

dmi build preconstruction building services melbourne

Step 1

Design & Feasibility

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Design & Feasibility

Explore your vision, scope, and budget with a designer or architect and determine whether planning permits are needed for your location.

dmi build registered builder

Step 2

Site checks & permits

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Site checks & permits

A building surveyor investigates your site, soil and documents to prepare reports and submit your building permit application

dmi build quotation building services melbourne

Step 3

Quote & contract

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Quote & contract

We assess your plans, provide a detailed quote and prepare a contract once you're happy to proceed.

dmi build handover building services melbourne

Step 4

Build & handover

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Build & handover

We manage your build with precision, communication and care, until the moment you walk in.

We take a hands-on, collaborative approach to every build.
Learn more about our design and construction process →

Why Choose DMI Build for House Extensions Melbourne

We understand that extending your home is more than just adding square metres, it’s about enhancing how you live. Whether you’re creating space for a growing family or improving flow and functionality, we approach every extension with precision, care, and insight. Our team blends architectural intent with practical build knowledge to deliver seamless results that feel like they were always part of your home.

Learn more about Why Build With Us

Precision in Every Detail

We take a meticulous approach to ensure every new element feels like it was always part of your home. From structure to finishes, your extension will blend naturally and perform beautifully.

Clear, open communication

You’ll always know what’s happening and why. We prioritise transparency and proactive updates at every stage, so there are no surprises, just clarity and confidence.

On-time and on-budget delivery

We back every project with realistic, detailed quoting and clear scheduling. Our team delivers on promises, managing time and budget without compromise on quality.

Experienced, Hands-On Management

Your project is led by a registered builder with over 15 years of experience. You’ll have one point of contact from start to finish, ensuring every detail is handled with care and continuity.

Respect for Your Time and Space

We work efficiently and cleanly to minimise disruption to your daily life. From site management to communication, we’re mindful that your home is still your sanctuary during the build.

Built to Last, Designed for Living

We don’t just build for now, we build for the years to come. Our work is guided by long-term performance, practical design, and construction methods that stand the test of time.

Precision in Every Detail

We take a meticulous approach to ensure every new element feels like it was always part of your home. From structure to finishes, your extension will blend naturally and perform beautifully.

Open Communication

You’ll always know what’s happening and why. We prioritise transparency and proactive updates at every stage, so there are no surprises, just clarity and confidence.

On-time and On-budget Delivery

We back every project with realistic, detailed quoting and clear scheduling. Our team delivers on promises, managing time and budget without compromise on quality.

Experienced Management

Your project is led by a registered builder with over 15 years of experience. You’ll have one point of contact from start to finish, ensuring every detail is handled with care and continuity.

Respect for Your Time and Space

We work efficiently and cleanly to minimise disruption to your daily life. From site management to communication, we’re mindful that your home is still your sanctuary during the build.

Built to Last, Designed for Living

We don’t just build for now, we build for the years to come. Our work is guided by long-term performance, practical design, and construction methods that stand the test of time.

Recent House Extensions Melbourne Projects

Discover how the house extensions builder Melbourne, DMI Build, has brought thoughtful, high-quality house extensions to homes across Melbourne. Our completed projects reflect what matters most to our clients — more space, better flow and a home that grows with their lifestyle. Whether it’s a second-storey addition or a ground-floor expansion, each extension is designed to feel seamless and built to last. With open communication, careful craftsmanship and deep local knowledge, we help Melbourne homeowners create spaces they’ll love for years to come.

glen iris house extension modern exterior dmi build

Glen Iris House Extension

A second-storey extension designed for connection, comfort, and modern family living.

View Project
seamless side house extensions in melbourne completed by dmi build for a family home.

Kew House Extension

A seamless side extension designed to expand living space and enhance everyday family life.

View Project
custom house extension in north melbourne featuring exposed timber trusses and heritage design.

North Melbourne House Extension

A handcrafted extension blending heritage character with modern liveability.
View Project

Ready to start your house extension in Melbourne?

Plan with confidence – we’ll help you expand your home with precision, clarity and craftsmanship.

Request a quote
view our work

What Our Clients Say

★★★★★
High-end Residential Builder in Melbourne
attention to detail and quality
As an architect focused on high-end residential design, I value attention to detail and quality above all else. Dmitri Grayson demonstrated a...
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— Russell Casper, Grodski Architects
★★★★★
High-end Residential Builder in Melbourne
attention to detail and quality
As an architect focused on high-end residential design, I value attention to detail and quality above all else. Dmitri Grayson demonstrated a clear commitment to both while managing the construction of a two-storey home we designed. He was open, responsive, and easy to work with throughout the project. I’m pleased to recommend him and DMI Build.
high-end residential builder melbourne
— Russell Casper, Grodski Architects
★★★★★
House Extensions in Melbourne South and Kew East
very competent, solutions-focused approach
We’ve worked with Dmitri on several domestic projects over the years, including additions and...
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— George Stolfo, Odorisio & Stolfo Architects
★★★★★
House Extensions in Melbourne South and Kew East
very competent, solutions-focused approach
We’ve worked with Dmitri on several domestic projects over the years, including additions and alterations to a property in South Melbourne and a more recent extension in Kew East.On both projects, Dmitri acted as the construction manager and our main point of contact throughout. He attended site meetings, managed project documentation, followed through on architect instructions, and handled progress claims and variations professionally and efficiently.Across both builds, Dmitri demonstrated a deep understanding of construction processes, clear communication and a calm, solutions-focused approach to on-site coordination and technical queries. His ability to manage details without fuss made the process smoother and more reliable.I would confidently recommend him for future building and construction projects.
construction project management melbourne review
— George Stolfo, Odorisio & Stolfo Architects
★★★★★
29 Unit Apartment Building Refurbishment in South Yarra
attentive to detail, available and responsive and very easy to work with
Dmitri Grayson, of DMI Build,...
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— Pamela McGirr, Architect, Tripledot…
★★★★★
29 Unit Apartment Building Refurbishment in South Yarra
attentive to detail, available and responsive and very easy to work with
Dmitri Grayson, of DMI Build, is someone I am very happy to recommend to others seeking a builder.He completed refurbishment works for one of my Owners Corporation clients – an occupied 29 unit apartment building in South Yarra. Owners Corporations have their special challenges and I believe the Owners, Dmitri and myself walked away from a job that ended very well.Dmitri was professional at all times and his company lived up to its name with our project delivered both on time and budget. He is attentive to detail, available and responsive and very easy to work with. He also proposed more economical solutions that did not compromise the design and was very honest passing the savings along to the owners.I would be happy to work with him again.
apartment building refurbishment south yarra
— Pamela McGirr, Architect, Tripledot…
★★★★★
Extension and renovation in Glen Iris
completely transparent, honest and very helpful
DMI Build was the selected builder for our Glen Iris Project – an extensive renovation and addition, which presented a...
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— Drew Kitchen, Architect
★★★★★
Extension and renovation in Glen Iris
completely transparent, honest and very helpful
DMI Build was the selected builder for our Glen Iris Project – an extensive renovation and addition, which presented a number of complexities.During the tendering process, we found Dmitri to be completely transparent, honest and very helpful. Prior to signing contracts, he worked with us to meet the project budget and made a number of suggestions of areas we can look into alternatives to make necessary savings.The project was a complex and detailed addition, which required a high level attention to detail and experience. From the beginning, Dmitri exceeded our expectations with a willingness to go above and beyond to make sure of the best outcomes were achieved through all stages of the project. Dmitri displayed a thorough knowledge of construction techniques, building codes and Australian Standards.Above all else, the project was complete on time and on budget, despite a number of contract variations along the way.Dmitri will be a preferred builder in the future and I can comfortably recommend DMI Build for any project, irrespective of complexities.
complex home extension and renovation testimonial
— Drew Kitchen, Architect
★★★★★
Home renovation in St Kilda
managed everything smoothly from start to finish
We engaged DMI Build for home renovation services in St Kilda to prepare our property for sale. Dmitri coordinated various ...
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— Mark Duggan, St Kilda
★★★★★
Home renovation in St Kilda
managed everything smoothly from start to finish
We engaged DMI Build for home renovation services in St Kilda to prepare our property for sale. Dmitri coordinated various trades including painting, rendering, plumbing, and bathroom works and managed everything smoothly from start to finish. He provided multiple quotes, recommended the most suitable tradespeople, and ensured the work was completed professionally and efficiently. His attention to detail and clear communication made the whole process stress-free. Thank you for the excellent service.
home renovation services in st kilda
— Mark Duggan, St Kilda
★★★★★
Investment Property Renovation
wonderful work carried out to our investment property in Caulfield
We wish to thank you Dmitri Grayson of DMI Build for the wonderful work carried...
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— Alex Courtney, Caulfield
★★★★★
Investment Property Renovation
wonderful work carried out to our investment property in Caulfield
We wish to thank you Dmitri Grayson of DMI Build for the wonderful work carried out to our investment property in Caulfield prior to listing it for sale. The work included painting, bathroom renovation work, kitchen touch ups and exterior renovation work.We were very pleased with the quality of the work carried out and the manner in which you were able to liaise with and obtain the correct tradespeople to undertake the jobs required.Thank you for assisting us to achieve a wonderful result in the sale of our property.
investment property renovation
— Alex Courtney, Caulfield
★★★★★
Construction services
efficient, organised and good to deal with
I have known Dmitri Grayson for several years and he has organised both commercial and domestic jobs for me...
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— Barry Singer, Caulfield
★★★★★
Construction services
efficient, organised and good to deal with
I have known Dmitri Grayson for several years and he has organised both commercial and domestic jobs for me, large and small. He has always been efficient, organised and good to deal with. I will continue to use his construction services in the future.
construction services
— Barry Singer, Caulfield

Extension Builder Melbourne: Local Knowledge, Built-in

We bring more than construction expertise, we bring deep familiarity with your area’s regulations, architecture and council processes. From heritage overlays to sloping blocks, we understand the local challenges and know how to build with them in mind. That means fewer delays, smoother approvals and homes designed to truly belong.

seamless side house extensions in melbourne completed by dmi build for a family home.

Local expertise across Melbourne

With over 15 years of experience delivering house extensions Melbourne-wide, we’ve worked in many of the city’s most established and design-focused suburbs. These include Altona, Bentleigh, Blackburn, Box Hill, Brighton, Brighton East, Camberwell, Carnegie, Caulfield North, Cheltenham, Edithvale, Glen Iris, Hawthorn East, Kew, Malvern, Mont Albert, North Melbourne, Prahran, South Yarra, Surrey Hills and Templestowe.

Each area presents its own considerations. From heritage overlays to sloping blocks, we understand how to navigate local council requirements and build homes that belong. Our team is skilled at navigating these conditions with care, clarity and precision to keep your project running smoothly and professionally.

House extensions Melbourne built for the long term

We build second-storey and side house extensions Melbourne-wide, that are designed for real living and constructed to last. Our work is guided by proven methods, trusted materials and sustainable practices that perform well over time with low maintenance and lasting value.

Whether you’re planning for a growing family or simply want to improve the flow of your home, we deliver spaces that feel naturally connected to your existing house. Every extension is carefully considered, thoughtfully detailed and made to enhance how you live for years to come.

As a member of Master Builders Victoria, we follow best practice for residential construction across Melbourne.

Explore more

Considering more than
just an extension?

Explore our full-home renovation services.

Explore →

Starting from scratch?

See how we bring unique homes to life, from the ground up.

Explore →

Want to know exactly
how we work?

Here’s our step-by-step approach.

Explore →

Our recent projects

Take a look at some of our recent projects.

Explore →

Considering more than
just an extension?

Explore our full-home renovation services.

Explore →

Starting from scratch?

See how we bring unique homes to life, from the ground up.

Explore →

Want to know exactly
how we work?

Here’s our step-by-step approach.

Explore →

Our recent projects

Take a look at some of our recent projects.

Explore →