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Extensions & building Sydney

Home extensions & building, done properly. Guaranteed for 10 years.

Architectural plans, council approval guidance and structural building work for growing Sydney homes โ€” managed end to end by one licensed team.

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Get your free quote

Fixed price. No obligation. Replies within 1 business day.

Licensed & insured NSW builders ยท Licence 451522C

Our process

Your extension, start to finish

0

Design & Plans

We prepare 3D drawings and architectural plans, and advise whether your project needs DA or complying development approval.

1

Approvals & Insurance

We coordinate council approval where required and arrange HBCF insurance for contracts over $20,000.

2

Construction

Our team manages footings, framing, roofing and finishing, with regular progress updates.

3

Handover & 10 Year Warranty

Final inspection, handover documentation and a 10 year workmanship warranty.

HBCF insured on every eligible contract

NSW law requires Home Building Compensation Fund insurance on residential contracts over $20,000 โ€” we provide your certificate before work starts.

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What we build

Every extension type, every Sydney home

Rear extensions

Open-plan living and dining additions that connect seamlessly to the backyard.

Second storey additions

Add bedrooms and bathrooms upward when your block doesn't allow you to build out.

Granny flats & structural additions

Self-contained living spaces and structural additions, fully compliant and permitted.

Kitchen & living extensions

Extend your existing kitchen into a new open-plan family and dining space.

Alfresco & deck additions

Indoor-outdoor living spaces designed to suit Sydney's climate and your block.

Full home renovations

Combine an extension with a whole-home renovation, managed under one contract.

Transparent pricing

How much does a home extension cost in Sydney?

Extension costs vary widely with size, structural complexity and finishes. As a general guide, single-storey extensions typically start from $80,000, while second storey additions typically start from $180,000. Every project starts with a free in-home consultation and a detailed, itemised quote.

Single room

from $80k
  • Single-storey addition
  • Standard finishes
  • Complying development pathway where eligible
  • 10-year warranty

Second storey

$180k+
  • New bedrooms & bathroom upstairs
  • Structural engineering included
  • Full DA approval process
  • Premium finishes available

Every quote is itemised and fixed for the agreed scope โ€” the only variations are ones you request, or unforeseeable issues found once work is underway, which we document and price before proceeding.

Recent projects

Extension & building projects across Sydney

Before / after photo
Rear extension โ€” [Suburb]Open-plan living & dining, glass sliding doors
Before / after photo
Second storey addition โ€” [Suburb]Two new bedrooms & a bathroom
Before / after photo
Kitchen extension โ€” [Suburb]Wall removed, indoor-outdoor flow

Extension & building FAQs

Do I need council approval for a home extension?
Most extensions require either a Development Application (DA) or fall under complying development (CDC) pathways. We assess your project and guide you through the right approval process.
Do you carry Home Building Compensation Fund insurance?
Yes. Any contract over $20,000 is covered by HBCF insurance as required under NSW law, and we provide your certificate of insurance before work begins.
How long does a home extension take?
Timelines depend on scope and council approval times. We provide a realistic project timeline as part of your quote, with regular updates throughout construction.
Are you a licensed builder?
Yes, we hold a current NSW contractor licence (Licence No. [LICENCE NUMBER]), which you can verify via the Service NSW licence check tool.

Extension & building work across Greater Sydney

Ready to grow into your home?

Book your free consultation today โ€” fixed-price quote, free 3D design and architectural plans, with zero obligation.

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10-year warranty ยท HBCF insured ยท Free 3D design ยท Licensed & insured