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Guaranteed Home Extension Melbourne

We provide fixed-price home extensions in Melbourne, handling design, permits, and construction in 3-6 months for families needing more space, guaranteed on time and on budget. Our building solutions offer peace of mind.

A Fixed-Price Contract

The price we quote in your HIA building contract is the price you pay. This gives you complete financial certainty for your project and there are no hidden costs.

A 10-Year Structural Warranty

Your extension is protected by our 10 year building guarantee. We build high quality extensions that are made to last.

A Single Point of Contact Builder

You deal directly with our owner, providing clear communication from the first meeting to project completion.

Free & Friendly Consultation

Get A Free No Obligation Quote

Who We Help with House Extensions

We specialise in expanding your living space to perfectly match your family lifestyle upgrade with our expert home extensions. Our process delivers certainty and a stress free renovation from a trusted builder.

Growing Families

Add new bedrooms and living areas to create the space your family needs to grow.

Home-Based Professionals

Build a dedicated home office for a quiet and productive work environment.

Lifestyle Upgraders

Create an open-plan living and alfresco area for modern family entertaining.

Owners of Period Homes

Seamlessly blend a new extension with your home’s original character and charm.

This service is not suitable for renters or non-residential properties.

Our 3-Step Home Extension Process in Melbourne

Our streamlined process ensures your house extension is delivered on time and on budget. This is how we manage every home renovation project.

Consultation & Quote

We meet at your home to discuss your goals and assess the site. You then receive a detailed, all inclusive fixed-price quote within 48 hours for total clarity from the start.

Design & Building Approvals

We collaborate to finalize the architectural plans for your approval. Our team then manages the entire council permit process, securing all necessary building approvals on your behalf.

Construction & Handover

Our owner, a registered builder, personally supervises the build to guarantee quality. Upon completion, we conduct a final walkthrough with you and hand over the keys to your new space.

Ready to Plan Your Perfect Home Extension?

You’ve seen our process and our promises. Take the next step towards creating the home your family needs. Your on-site consultation and detailed, fixed price home extension quote are completely free and carry no obligation.

Our Home Extension Portfolio

Browse our gallery of recent work and imagine the possibilities for your own home, backed by our 10-year structural warranty.

Melbourne Home Transformation Case Studies

Beyond the images, here are the stories of the specific problems we solve for our clients.

"We design for your family's real life, not just for the plans. Our focus is on solving your daily frustrations to create a lifestyle matching extension that genuinely improves how you live."
Wafa Ismael, Founder & Licensed Builder

Kew Home Extension for a Growing Family

Problem: A cramped, disconnected living area that made family life feel chaotic.

Solution: A ground floor extension creating a vast, central living hub and open plan kitchen. This design created more space.

Outcome: Completed in 4 months, on budget, delivering a significant family lifestyle upgrade. The renovations were a huge success.

Kew Home Extension for a Growing Family

Problem: A cramped, disconnected living area that made family life feel chaotic.

Solution: A ground floor extension creating a vast, central living hub and open plan kitchen. This design created more space.

Outcome: Completed in 4 months, on budget, delivering a significant family lifestyle upgrade. The renovations were a huge success.

“Mardo Building Co. made it seamless. Our home feels twice as big and functions perfectly for our family now.”

Jane S.

Homeowner

Bentleigh Renovation for a Professional

Problem: No dedicated space for a quiet home office setup to work from home effectively.

Solution: A second storey home addition with a quiet, sun lit home office and master suite. A clever extension design.

Outcome: A perfect work-life balance in a productive work environment without sacrificing valuable garden space.

Bentleigh Renovation for a Professional

Problem: No dedicated space for a quiet home office setup to work from home effectively.

Solution: A second storey home addition with a quiet, sun lit home office and master suite. A clever extension design.

Outcome: A perfect work-life balance in a productive work environment without sacrificing valuable garden space.

“The new office is a game changer for my productivity. The entire process was professional and stress free.”

Mark R.

Homeowner

More Reviews from Melbourne Homeowners

Our guarantees are more than just words. Here is the proof, directly from the homeowners who have experienced our process.

Your Benchtop, Engineered by Builders

Your home extension is personally supervised by our founder. This direct to builder approach is our promise of quality and your assurance of a stress free process.

You’ve seen the possibilities. The next step is a simple conversation to transform your ideas into a fixed price plan, managed by Melbourne’s expert building team.

Frequently Asked Questions

With a clear understanding of the process, let’s address some final common questions about renovations and home extensions.

What is the typical timeline for an extension?

3-6 months. This is the standard construction timeframe for most home extensions, and your specific timeline will be locked into your HIA building contract for your renovation.

We assess this for you. In our initial free consultation, our house extension builders evaluate your property’s structure, land, and council zoning to confirm viability before any work begins on your home.

It’s a guarantee. An ‘estimate’ can change. Our fixed-price contract is a legally binding document that locks in the cost, protecting you from budget blowouts during the build.

Our owner. He provides daily site management, so you always have a direct line to the owner-supervised build for ultimate clarity and accountability for your house extension.

We provide a transparent variation. When it comes to asbestos handling in extensions, safety is key. We stop work and provide a clear project variation document detailing the cost and time to rectify it. We never proceed without your full, informed approval.

We document it clearly. If you request a change, we prepare a variation document outlining the cost and timeline impact. We only proceed once you have reviewed and approved it for your home extension.

Start Your Home Transformation with Confidence

We have shown you the clear, guaranteed way to extend your home. 

Partner with Mardo Building Co. for a fixed-price contract, a 10-year structural warranty, and a seamless process that delivers the space your family deserves. Let’s build your future, together.

Call Us

0416 049 533

Email Us

admin@mardobuildingco.com.au

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