Home Extensions & Second Storeys
More Space, Without Moving
Ground-floor home extensions, second storey additions and house raises across the Gold Coast. We design and build extensions that blend seamlessly with your existing home — adding the space your family needs without the cost and upheaval of moving.
Overview
Ground-floor home extensions, second storey additions and house raises across the Gold Coast. We design and build extensions that blend seamlessly with your existing home — adding the space your family needs without the cost and upheaval of moving.
Every project starts with a conversation about what you want to achieve, an honest assessment of what is possible, and clear advice on the way forward. From there we prepare a detailed preliminary tender: a properly scoped, fully itemised construction price built on current trade and supplier costs, so there are no surprises once work begins.
Price Range
$4,000 – $6,000+ per m²
Typical Timeline
4 – 8 months
Warranty
6-year structural (QBCC)
What Our Clients Say
Sam and Matt recently completed our house extension and renovation and we couldn't be happier with the results. From our first meeting through to the final touches, the team was professional, reliable, and a pleasure to work with.
Donna Gallaher
Home Extension & Renovation · Gold Coast
Couldn't rate the boys at JL Coastal any higher, incredibly well priced, great service and the end results for multiple projects completed has well and truly exceeded our expectations.
Timmy Mac
Multiple Projects · Main Beach
What's Included
Project Gallery
Transparent Pricing
Typical price range
$4,000 – $6,000+ per m²
Fixed-price quoting — no hidden costs, no surprises
Factors Affecting Your Quote
- Ground-floor vs second storey
- Size of the extension (sqm)
- Structural complexity of the existing home
- Matching existing materials and finishes
- Site access and slope
Our Process
Feasibility & Design
We assess your block, existing structure and council overlays, then design an extension that fits the home, the site and the budget.
Approvals & Engineering
Full management of building approval, engineering and any town-planning requirements before a tool is lifted.
Structural Works
Footings, framing and roofing — staged carefully so as much of your home as possible stays liveable during the build.
Lock-up & Fit-out
Windows, cladding, electrical, plumbing and finishes — matched to your existing home so the extension reads as original.
Completion & Warranty
Final walkthrough, 3-month check-up, and your full QBCC warranty coverage begins.
Ready to Start?
QBCC licensed. Fixed-price contracts. Talk directly to the builder.
QBCC Licensed #15371883 · 6 Year Structural Warranty · Gold Coast & Brisbane