Extensions & Additions by SWBG in Sydney

Extensions & Additions

Ground-floor extensions and second-storey additions, designed around your home and the way you live.

What's involved

Ground-floor extensions and second-storey additions that create more space while making the most of the home and location you already have.

Outgrown your home but love where you live? An extension or addition can give you the extra space you need without the cost and upheaval of moving.

Every extension needs to work with the existing home. Before construction begins, we assess the existing structure, levels, roof form, services and site access to understand how the new works will connect and identify any potential challenges early.

Depending on where your project is up to, we can assist with design development, structural engineering, DA or CDC approvals and certifier coordination, or work from your existing approved plans and documentation.

Once construction begins, we coordinate the trades, suppliers and consultants, carefully managing the connection between the existing home and new works. Where practical, we can also stage the project around the household and plan temporary weatherproofing, access and service interruptions throughout construction.

You'll receive weekly progress updates throughout the build, keeping you informed on what's been completed, what's coming next and any decisions required along the way.

Completed brick alfresco extension opening into a renovated kitchen
Project types
Ground Floor · Second Storey
Project stage
Planning · Approved Plans · Construction
Coverage
Sydney & Surrounding Areas
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Scope

What's included

  • Ground-floor extensions
  • Second-storey additions
  • Structural alterations & tie-ins
  • Design & consultant coordination
  • Engineering & approval assistance
  • Existing structure & service assessment
  • Trade & supplier coordination
  • Site protection & weatherproof staging
  • Weekly progress updates

The SWBG approach

How we approach it

01

Understand the home & project

We review the existing property, proposed works, site conditions and your requirements to understand how the addition will integrate with the existing home.

02

Design, documentation & approvals

Depending on your project stage, we can assist with design, engineering and approvals or review your existing approved documentation and prepare the project for construction.

03

Construction & integration

We coordinate the construction through to completion, carefully managing structural tie-ins, weatherproofing and finishes, with weekly progress updates throughout the build.

Questions, answered

Extensions and Additoons FAQ's

Can you add a second storey to my existing home?

In many cases, yes. The existing structure and footings need to be assessed to determine whether they can support the proposed addition or whether strengthening is required. We can coordinate the necessary engineering as part of the planning process.

Do you handle design and council approvals?

Yes. If you're at the early stages, we can assist with design development and coordinate the engineers, certifier and other consultants required for a DA or CDC. If you already have approved plans, we're also happy to work from your existing documentation.

Is a ground-floor extension or second-storey addition better?

It depends on your property, available land, planning controls, existing structure, budget and how you'd like the additional space to connect with your home. These factors can be assessed early to help determine the most suitable option.

Can we live in the house during the extension?

Often, yes. Where practical, works can be staged and isolated to help keep parts of the home accessible. For extensive structural works or periods where essential services are affected, temporary relocation may be recommended.

How do you make the addition work with the existing house?

We carefully consider levels, roof lines, openings, materials and internal finishes where the new and existing areas meet. Depending on the design, the goal may be a seamless continuation of the existing home or a deliberate contemporary addition.

How much does a home extension or second-storey addition cost?

Costs vary considerably depending on the size, existing structure, site access, structural requirements, level of finish and complexity of the works. Once we understand your property and proposed scope, we can provide more accurate pricing and discuss the appropriate delivery approach.

How long does an extension or addition take?

The programme depends on the size and complexity of the project, approvals, structural work and level of finish. We'll establish a project programme and explain the expected stages before construction begins.

Start a project

Tell us about your extensions & additions project.

Free consultation and quote, with a personal response within 12-24 hours of your enquiry.