Custom Builders in Sydney

Home Extensions And Additions

We can increase your home’s size with an extension or second story addition that reflects your lifestyle, values, and vision.

1

Quality Workmanship

We treat every home like it’s our own, using trusted trades, quality materials, and thorough internal quality control checks at each stage. Your home will meet all codes, match the approved plans, and be built to last.

2

Transparent Process, No Surprises

There are no hidden costs or unexpected surprises. We provide clear pricing, detailed proposals, and a step-by-step process, you’ll always know what to expect.

3

Post-Construction Guarantee

Our support doesn’t end at handover. We follow up at 3, 6, and 12 months to make sure everything is performing as it should. If it’s not, we’ll take care of it. That’s our commitment to long-term quality and peace of mind.

Rocdale Renovation Builders
Sans Souci Loungeroom Renovation
Hurstville Custom Home Builder6

Extend Your Home With An Addition Or Second Storey

Build More Space Without Leaving the Home You Love
When your family has outgrown your home but you don’t want to move, a well-designed extension can transform the way you live.
At Phase Projects, we create bespoke home extensions across Sydney that feel seamless, adding the space you need while enhancing your property’s value and character.

Why Choose a Home Extension?

A custom extension is more than extra square metres, it’s an opportunity to reimagine how your home works for you.
Whether it’s adding more bedrooms, opening up living areas, or creating a multi-level lifestyle retreat, we design and build extensions that reflect your vision and your block.

Second Storey Additions: The Smarter Way to Extend

One of the most popular ways to extend in Sydney is by building up.
A second storey addition lets you:

  • Create new bedrooms, bathrooms, or a parents’ retreat upstairs
  • Free up the ground floor for open-plan living and entertaining
  • Preserves outdoor space for a pool, garden, or alfresco area
  • Unlock elevated views and natural light
  • Future-proof your home while adding significant value

Unlike cosmetic upgrades, a second storey is a structural investment that requires engineering expertise.
Our team works closely with structural engineers and certifiers to ensure your foundation can support the new level, delivering a result that feels like it’s always belonged.

Ready to explore your Homes’s potential?

Bring your ideas or existing plans. We’ll map the approvals pathway, timeline, and budget drivers and show you how to get the most from your land, without leaving your neighbourhood.

Designed for Real Life

Add The Extras That Your Home Needs Levels

We can extend your home with additional rooms or a second story addition

Other Types of Home Extensions We Deliver

Not every extension needs to be a second storey. Depending on your block and lifestyle, Phase Projects can also design:

  • Ground floor rear extensions to expand kitchens, dining, or living areas
  • Outdoor areas to extend patios, swimming pools and pool houses
  • Side extensions to make use of unused land
  • Basement extensions for gyms, theatres, or underground parking
  • Attic Conversions to add extra rooms without a second story

Every project is tailored to your land, your budget, and your goals.

Why Build with Phase Projects?

  • Basement & complex build specialists: we excel on sloping, narrow, and challenging blocks
  • Lifestyle driven design: extensions that feel natural, not tacked-on
  • Luxury finishes: we deliver the same craftsmanship in extensions as we do in custom homes
  • Hands on leadership: our director is involved in every stage for quality and communication

A Builder Who Shares Your Vision

Extending your home isn’t just about space, it’s about creating a lifestyle. At Phase Projects, we listen to your goals, respect your budget, and apply our expertise to bring your ideas to life.
The result is a home extension that feels like it was always meant to be there, tailored to your family and your future.

Sans Souci Pool House Renovation

What Sets Us Apart

It’s not fast-tracked. It’s not left to chance. It’s designed to remove doubt, elevate quality, and deliver an experience as considered as the home itself.

No Surprises, No Stress

Far too often, homeowners are surprised and disappointed when their finished home is missing the features they discussed with their builder. With Phase Projects, we ensure that every detail is captured and included.

Deal Directly with the Us

At Phase Projects, you deal directly with Mohamed, the business owner. You’ll have his personal mobile number, receive immediate responses to your questions, and always be kept informed about your Project.

Highly Qualified tradespeople

Mohamed and his team bring hands-on expertise to every project. This hands-on background means that every aspect of your build is overseen by someone who understands the craft and pays attention to every detail.

Experience You Can Trust

With over 20 years of experience, Phase Projects has earned a reputation for reliability and quality. Our proven process, combined with a team of skilled tradespeople, ensures that you receive a first-class custom home.

Get Answers You Need—100% Free

Navigating the world of custom homes can be overwhelming. The quickest way to get answers and clarity on your custom home journey is to contact us.

No-Obligation Session

This session will be with Mohamed, the owner of Phase Projects, who will share over 20 years of experience in building custom homes across Sydney.

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Home Extensions & Second Storey Additions FAQ’s

Got another question? Please reach out to us!
After 20 years of building homes in Sydney, we have built all sorts of homes and dealt with all planning, design and approval scenarios!

A renovation updates or reconfigures what’s already there, while an extension adds new space to your home, whether that’s building out, up, or below ground.

Yes. Extensions typically increase both liveability and market value, especially in Sydney where land is at a premium. A second storey addition can make your property stand out in competitive suburbs.

Costs vary widely depending on size, finishes, and complexity. Ground-floor extensions are generally less expensive than second storey additions, but every site and design is unique. We provide tailored proposals after assessing your property.

Yes. Depending on your site, you may need a Development Application (DA) or a Complying Development Certificate (CDC). We manage all approvals and compliance on your behalf.

It depends on your existing foundation, design requirements, and level of finishes. As a guide, it’s a significant structural investment, but it usually adds considerable value to your home.

We deliver second storey additions, rear extensions, side extensions, basement extensions, and custom indoor–outdoor living spaces. We’re especially experienced on sloping and narrow blocks.

Often yes, but it requires a structural assessment. We work with engineers to evaluate your foundation and ensure the new level can be safely and seamlessly integrated. Read more here about second storey considerations.

Most extensions take several months, depending on scope, approvals, and weather conditions. A second storey addition typically takes longer than a single-level extension.

In some cases, yes, particularly with rear or side extensions. For larger structural works like a second storey, temporary relocation may be more practical. We’ll advise based on your project.

Because we’re more than builders, we’re partners who combine structural expertise with design vision. We specialise in complex builds, luxury finishes, and creating extensions that feel like they’ve always been part of your home.

Ready For A Quote & Consultation?

Begin your project with a complimentary quote and consultation that gives you clarity, confidence, and expert guidance. Whether you build with us or not, you’ll get a clear plan for your project. We will:

  • Answer your questions, including the ones you may not know to ask, so you can avoid costly mistakes.
  • Help refine your vision for your custom home or renovation and outline the best options to bring it to life.
  • Provide a realistic overview of building and renovation costs, showing where to prioritise investment for maximum value.
  • Explain how Phase Projects delivers custom homes and high-end renovations on time, on budget, and to the highest standard.

Your consult is with Mohamed, owner of Phase Projects, who brings over 20 years of experience delivering architecturally designed homes and renovations across Sydney’s Inner West, Eastern Suburbs and Southern Suburbs.

Get A Complimentary Quote

Receive a tailored, no-obligation quote from Mohamed within 24 hours. Prefer email? Contact us at info@phaseprojects.com.au.

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Ready to Build Your Custom Home?

0423 652 812