Ground Floor House Extensions

Rear House Extensions | Front House Extensions | Side House Extensions |

A ground floor extension is a fantastic option to add an extra level of comfort. There are so many ways to “build out” your house, with house extensions possible to the rear, the front, or any side where there is land to spare 

Our specialist design and construction experts are happy to help you maximise the use of space and plan the perfect home extension project for your needs. Your vision is our priority. For a stress-free and transparent design and building consultation, call us on
1300 721 150.

Outdoor entertaining deck and lawn of a contemporary new Australian home

Ground Floor House Extension Plans

Rear House Extensions | 36m2 | Second Living Space

Work at home in a large room with desk and sideboard against blue wall - 3d rendering
Note: the room does not exist in reality, Property model is not necessary

For when kids become teens, and teens become adults, this ground floor house extension provides two additional bedrooms and converts existing space into a private sitting and exclusive study area ensuring everyone in the family can have their space and peace without getting in each others way.

Front House Extensions | 61m2 | A Space for Guests

Wooden patio connected to a private building, with seating area and cozy lounge zone, open window with entrance to the house.

Today's lifestyles call for multiple living - and even work areas within the home. This exceptional 61m2 house extension adds additional living space, a guest room, and a work from home area. It calls for a delicate and personal balance of open plan and enclosed areas.

Rear House Extensions | 25m2 | Parents Retreat

Ground Floor Parents Retreat Home Extension

The master suite in this house extension adds 25m2 of paradise with a large room with built in robe covering an entire wall, a large bathroom that comfortably fits a four piece bathroom suite, with floor to ceiling stacking doors and a full width porch so you can enjoy peace - inside and out.

Front House Extensions | 86m2 | Spacious Single Level

Stunning contemporary open plan spacious living and dining room

If you're thinking of adding a garage, it could be worthwhile to look at the whole footprint of the house and see what's needed.  In this case a large master suite with ensuite and built in robes, a grand hallway entry and an open plan office space modernised to create utility for the whole family.

Rear House Extensions | 60m2 | Entertainers Dream

Happy young family spending time together. Family are happy. Free time together. Family are playing outside.

Open plan living with outdoor alfresco extensions are some of our most popular requirements. This house addition floor plan extends the entire rear of the existing home to add two new bedrooms, a new bathroom, and cleverly extend the existing living space with sliding stacking doors and an alfresco area.

Front House Extensions | 21m2 | Room for Living

Shot of a content senior couple standing in their back yard

When you're just looking for that little bit extra. This neat little front extension takes some unused frontage next to the driveway and expands the home creating a substantial master bedroom with large ensuite and walk in robe, creating a private haven out of previously underutilised space.


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Have It All – The Home You Want, With a Mortgage You Can Afford

Modifying existing homes is the foundation upon which Cubitt’s was built. Our team have completed more than 300 home extensions and additions across Sydney, Newcastle, Wollongong and surrounding areas. We build home extensions in the ACT and NSW, specialising in the Southern Highlands and South Coast, Newcastle, Central Coast and the Hunter. We have the design experience and the expert tradies who will make it happen for you available in-house for a smooth and stress-free home extension experience. This is real! The home you want can be yours.

At Cubitt’s, we handle every aspect of home extensions in-house – that means we’re your one-stop-shop for a stress-free renovation. Call us on 1300 721 150 to begin your dream Home Extension.

Build your dream home extension with Cubitt’s - the home additions experts

At Cubitt’s, we’ve spent nearly three decades helping Australians build their forever homes. When you’ve found a place you love and are ready to put down roots, we’re here to make your home exactly right for you and your family. Whether you need an extra floor with rooms for your growing family or want to expand your living and entertaining area with a luxurious ground floor extension, we’re here to help. Let us make your vision a reality.

As an Australian family-owned business we pride ourselves on exceptional quality, attention to detail and top-shelf customer care. Get in touch today to learn more about home extensions with Cubitt’s – we’d love to hear about your project!


Trusted in-house designers and builders


All DA and council approvals


28+ years of experience


Full-service home extensions


Dedicated design consultants


Proudly Australian, owned and operated


Our Easy 8 Step Home Extension Process


We love the house we brought our babies home to, now we love it more because we have space for them as teenagers!

- Kim, Spring Hill NSW



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Interested in finding out how to make a positive investment from a Cubitt's Home Extension? Get in touch for a no-obligation site inspection today.

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