Second Storey Additions

ALL NSW and ACT council approvals for a adding a second story to your house

As your family grows up, you may find yourself needing more and more usable space. A well-planned home extension lets you stay in the family home you know and love, where your most treasured memories have been made, all while achieving the added space you need and increasing the value of your property.

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.

"Front of a new modern two story family suburban home with clear blue sky, green grass and landscaped gardens."

Second Storey Additions | 60m2 | Second Level Living

Two family brother and sister holding remote control and watching TV show

How does three bedrooms with built in robes, a full size bathroom and a small balcony suit you for a new lease on second level living? There's a reason two story newbuilds are built with the bedrooms upstairs. Away from road traffic noise and light, your lifestyle is elevated along with the peace and quiet when its time to rest.

Second Storey Additions | Teenagers Retreat | 61m2

Horizontal, photography,blue hair,multi colored,white color,bright lit,library,colors,20-29 years

Demand for Teenage Retreats is at an all time high. Committing to staying connected through adolescent years might mean a practical investment in some additional space . Our 61m2 Teenage Retreat second storey addition plans include two extra bedrooms, a bathroom and a large sitting area.

Second Storey Additions |58m2 | Multi Generation

Multi Generation Family Relaxing On Sofa At Home Together

If it's time for elderly parents to consider moving out of their own home - a house addition could keep them close, and safe. This 58m2 second story addition goes beyond the concept of a 'parents retreat'. The apartment consists  of a large sitting room and study space, with enough open space for flexibility in use.

Second Storey Additions | 59m2 | Growing Family

Children running on backyard. Happy young family spending time together. Free time together.

The sky is the limit with this 59m2 second storey house extension.  You could move a whole other family in with the space adding a large master bedroom with multipurpose study space, another large bedroom, a bathroom that fits a bath, a sitting area plus a wet bar perfect for prepping snacks upstairs.

Second Storey Additions | 30m2 | Air BnB Addition

Young people at home in Sydney Australia relaxing and partying.

Some of our clients have built a house extension or addition with the short term holiday rental market in mind and for many, the financial rewards make it a serious consideration.This clever, compact and practical Home Extension, incorporates a new garage with a Granny Flat style accommodation over the top.

Second Storey Additions | 82m2 | Room to Grow

A family of four watching television while sitting together on the sofahttp://

As the kids grow up, your house that once seemed to have plenty of space feels suddenly quite full. Featuring two generous bedrooms with exceptional walk in robe space, as well as a full sized bathroom, sitting room and storage, a second story house extension like our 'Room to Grow' may be the solution


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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.

We’re committed to providing a seamless, streamlined experience throughout the design, planning and building process. Our experienced council planning and drafting teams understand the complexities of building with councils throughout NSW and the ACT and can handle all approvals and planning for you, plus you’ll have your own dedicated site supervisor, to keep you informed and updated every step of the way.

Call us on 1300 721 150 to begin your dream Home Extension.


Completed Projects

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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