Newcastle & Lake Macquarie · Licensed Builder
Home Extensions
Newcastle & Lake Macquarie
Built right. Every time.
Ground floor extensions, second storey additions, granny flats and room additions across Newcastle and Lake Macquarie — designed and built by JALBAR Constructions.
Newcastle & Lake Macquarie
Extension Builders Newcastle Trusts
An extension is one of the best investments you can make in your Newcastle or Lake Macquarie home — adding space, functionality and value without the cost and disruption of moving. JALBAR has delivered extensions across the region for over 30 years.
From a simple ground-floor room addition to a full second storey, we manage every aspect of the project — design coordination, engineering, council approvals, structural work, and all the internal finishes that make a new space feel like it was always there.
How it works
Our Process
Site Assessment
We visit your property, assess the structure, site constraints and your council's requirements before providing a realistic budget.
Design & Approvals
We coordinate with designers and structural engineers, prepare DA or CDC documentation, and manage the approvals process with your local council.
Structural & Fitout
Our team handles excavation, concrete, framing, roofing, windows, all internal trades and finishes — fully coordinated and managed by JALBAR.
Handover
Final inspection, sign-off by certifier, and a thorough defect walkthrough before handover. Full warranty on all work.
Common questions
Frequently Asked Questions
How much does a home extension cost in Newcastle?
A ground floor extension in Newcastle typically starts from $3,000–$4,500 per square metre depending on inclusions, site access and finishes. A second storey addition generally runs higher due to structural requirements. We provide a detailed fixed-price quote after a site visit.
Do I need council approval to extend my home in Newcastle?
Most extensions require either a DA (Development Application) or CDC (Complying Development Certificate). Some minor works may qualify as exempt development. We'll assess your specific property and advise the fastest, most cost-effective approval pathway.
How long does a home extension take in Newcastle?
A straightforward ground floor extension typically takes 10–16 weeks on site, depending on scope and weather. Second storey additions can take 4–6 months. Council approval timelines run separately before work commences.
Can you add a granny flat to my Newcastle property?
Yes. We design and build granny flats and secondary dwellings on Newcastle and Lake Macquarie properties, subject to zoning and lot size requirements. We'll confirm eligibility and the best approval pathway at the initial consultation.
Get a Free Quote
Tell us about your extension. We respond within 1 business day and can usually arrange a site visit within 1–2 weeks.
Also see: Renovations Newcastle · Knock Down Rebuild Newcastle