Across Melbourne, more homeowners are recognising the value and versatility of a single storey extension. Whether you’re dreaming of an expansive open-plan kitchen, an extra bedroom, or a luxurious master suite, a well-considered home extension allows you to reimagine your current space, without the complexities of building upward.

With over 15 years of experience as a custom home builder, Karja Builders brings a deep understanding of how to deliver single-storey extensions that enhance everyday living while respecting the architectural integrity of the original home. Let’s explore how a thoughtfully designed storey home extension can breathe new life into your home.

Why Choose a Single Storey Extension?

When space permits, opting for a ground floor extension is often the most seamless way to expand your living area. Unlike a double storey extension, a single-storey build typically involves a shorter building process, fewer building permits, and more flexibility with design and material choices. It’s an ideal solution for homeowners looking to avoid stairs, maintain visual harmony, and still add significant value to their property.

A single storey house extension is also perfect for creating a flowing, integrated feel between indoor and outdoor areas, an essential feature of contemporary Melbourne homes. Think expansive rear extensions with bi-fold doors, skylights that flood the space with natural light, and open-plan configurations that elevate everyday comfort.

Common Motivations for a Ground Floor Home Extension

Every homeowner has their own unique reason for expanding. At Karja Builders, we tailor each extension project to individual goals, lifestyle needs, and site constraints. Some of the most popular single storey extension ideas include:

1. Expanding the Kitchen and Dining Area

Modern families crave larger kitchens that double as social hubs. A single storey extension can create room for a butler’s pantry, generous island bench, or a dining space that connects seamlessly to the outdoor entertaining area.

2. Adding a Master Suite or Extra Bedroom

A home extension is a great way to add an elegant master retreat or guest accommodation, perfect for multi-generational households or growing families.

3. Creating a Home Office or Study

As remote work becomes more permanent, a home office built into a rear extension offers a peaceful, productive environment without compromising existing living zones.

4. Improving Layout and Functionality

Many older Melbourne homes lack the flow and flexibility today’s homeowners expect. A single-storey extension allows you to reconfigure the living area, improve circulation, and maximise every square metre.

What to Consider Before You Build a Single Storey Extension

Planning a home expansion project is about more than just adding extra space, it’s about ensuring the new addition complements the existing home in form, function, and finish. Here are key considerations:

Site Constraints and Orientation

The layout of your block, sun exposure, and access points will all influence your extension ideas. A ground floor extension to your home should maximise natural light, airflow, and connection to the garden.

Planning Permission and Council Approval

All types of home extensions must comply with building regulations and local planning processes. Karja Builders will guide you through planning permission, council approval, and all relevant building permits, so you can feel confident at every stage.

Design Cohesion

A successful storey extension respects the architectural character of the existing home. From rooflines and material choices to cladding and glazing, every detail should be thoughtfully considered. When done well, a single storey extension feels like a seamless continuation of the original structure, balanced in proportion, style, and finish.

Budget and Additional Costs

The cost of a single storey house extension in Melbourne varies depending on factors like size, finishes, and complexity. It’s important to consider material costs, site preparation, professional fees, and potential additional costs such as kitchen or bathroom fit-outs. At Karja Builders, we can help you understand the costs involved and provide guidance throughout the budgeting process to keep your home extension project clear and well-planned.

Why Work with a Custom Home Builder?

Choosing the right builder can make or break your extension. As a seasoned home builder specialising in extensions and renovations, Karja Builders brings meticulous attention to detail, proactive communication, and decades of local experience. We pride ourselves on delivering extensions that honour your vision while standing the test of time.

Unlike generic builders, we approach each single storey home with a fresh eye, never imposing cookie-cutter solutions. Whether you’re undertaking a heritage-sensitive renovation, a modern rear extension, or a large-scale house extension project, our team is equipped to guide you from initial sketches to final walk-through.

Inspiration: Single Storey Extension Ideas for Melbourne Homes

Looking for fresh inspiration? Here are a few house extension ideas in Australia that continue to resonate with our clients:

• The Indoor-Outdoor Entertainer: A single storey extension with large stacker doors, timber decking, and an alfresco kitchen for year-round enjoyment.
• The Light-Filled Living Zone: A north-facing ground floor extension featuring clerestory windows and polished concrete floors for a sleek, contemporary look.
• The Elegant Parent’s Retreat: A spacious master suite with walk-in robe, ensuite, and private courtyard, tucked away from the main living areas.
• The Flexible Family Wing: A new addition with two extra bedrooms and a rumpus room, tailored for a growing family’s evolving needs.

Each example demonstrates how a well-designed extension can significantly increase the value of your home while enriching your daily lifestyle.

Thinking of a Double Storey Extension Instead?

While this article focuses on single-storey extensions, some properties are better suited to building up. If you’re short on land or want to preserve your backyard, a double storey extension may be the ideal solution. We compare both options in our dedicated article:
Single vs Two Storey Extension – Which is Right for You?

Begin Your Home Transformation Today

At Karja Builders, we believe a single storey extension should do more than add square metres—it should enhance the way you live. From planning to design and construction, our team is here to make your dream home improvement a reality.

Explore our extensions and renovations expertise here:
Home Extensions – Karja Builders Melbourne

Build with Confidence. Build with Karja.

Whether you’re ready to build single storey, explore types of home extensions, or simply need expert guidance, Karja Builders is your trusted partner in transforming your single storey home into a space that reflects your lifestyle, values, and future.

Contact us today to discuss your extension project, and take the first step toward the home of your dreams.