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Extension Specialists

Gold Coast Home Extensions

Need more space? A home extension is often the smartest way to grow your living area without the cost and disruption of moving. We design and build seamless extensions that look and feel like they've always been part of your home.

  • Ground floor room additions
  • Second storey additions
  • Granny flat design & construction
  • Garage conversions
  • Council DA & BA approvals handled
  • Structural engineering coordination
  • Seamless integration with existing home
  • QBCC licensed & insured
Gold Coast home extension by Concept Design Construct

Extension Types

Ways To Extend Your Home

Every home and family is different. We offer a range of extension solutions to add the space you need, whether it's a single room or an entire new level.

Ground Floor Additions

Extend your home outward with additional bedrooms, living areas, or expanded open-plan spaces. We match existing rooflines and finishes for a seamless result that adds value and livability.

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Second Storey Additions

Double your living space without touching your yard. Second storey additions are ideal for growing families on the Gold Coast who want to keep their outdoor areas intact while gaining bedrooms, bathrooms, and living space above.

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Granny Flats & Ancillary Dwellings

Self-contained granny flats for extended family, rental income, or a home office. We handle design, council approvals, and construction of fully compliant secondary dwellings on your property.

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Garage Conversions

Transform an underused garage into functional living space such as a bedroom, home office, rumpus room, or studio. A cost-effective way to add usable area without building from the ground up.

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Our Approach

Seamless Integration With Your Existing Home

The hallmark of a quality extension is that it looks like it was always part of the original home. We achieve this by carefully matching architectural details, materials, and finishes throughout.

  • Matching rooflines, cladding, and window styles
  • Consistent interior finishes and flooring
  • Structural engineering for load-bearing connections
  • Integrated electrical and plumbing systems
  • Landscape restoration after construction
Seamless home extension on the Gold Coast
Extended living area on the Gold Coast

Investment Guide

Home Extension Costs

Home extensions are a significant investment, but typically cost less than buying a new, larger home when you factor in stamp duty, agent fees, and moving costs. Here's a guide to Gold Coast extension pricing.

  • Ground floor room addition: $80,000-$150,000
  • Second storey addition: $150,000-$300,000+
  • Granny flat (self-contained): $120,000-$200,000
  • Garage conversion: $40,000-$80,000
  • Council approvals & engineering: included
  • Typical construction timeline: 8-20 weeks
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Our Process

How We Deliver Your Home Extension

Home extensions involve more planning and approvals than standard renovations. Our structured process ensures nothing is missed, from initial feasibility through to final handover.

Home extension kitchen renovation Gold Coast
01

Site Assessment & Feasibility

We inspect your property, check council overlays, assess structural capacity, and determine what's possible on your block before any design work begins.

02

Design, Engineering & Approvals

Architectural plans, structural engineering, and council submissions handled by our team. We manage the approval process so you don't have to chase council.

03

Foundation & Build

Footings poured, frame erected, roof connected to existing structure, services extended. The new space takes shape while we protect your existing home from dust and disruption.

04

Integration & Handover

New and old are connected seamlessly — matching flooring, paint, and finishes. The extension should feel like it was always part of the house, not an addition.

Home renovation and extension portfolio Gold Coast

Related Services

Renovate While You Extend

Many of our extension clients take the opportunity to renovate existing rooms at the same time. Combining your extension with a kitchen, bathroom, or whole-home renovation can save time and ensure a cohesive result.

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FAQs

Common Home Extension Questions

How much does a home extension cost on the Gold Coast?

Home extension costs on the Gold Coast vary significantly based on size and complexity. Ground floor room additions typically start from $80,000-$150,000, second storey additions from $150,000-$300,000+, and granny flats from $120,000-$200,000. These ranges include council approvals, engineering, and construction. We provide detailed fixed-price quotes after a thorough site assessment.

How long does a home extension take to build?

Home extensions typically take 8-20 weeks of construction time, depending on size and complexity. Ground floor additions are usually 8-12 weeks, while second storey additions may take 14-20 weeks. Allow an additional 4-8 weeks prior to construction for design, engineering, and council approvals.

Do you handle council approvals for home extensions?

Yes, we manage the entire approval process from start to finish. This includes preparing architectural drawings, engaging structural engineers, submitting Development Applications (DA) and Building Applications (BA) to the City of Gold Coast, and coordinating with private building certifiers. We keep you informed at every stage.

Can you add a second storey to my existing home?

In most cases, yes. Second storey additions are one of our core services. We begin with a structural assessment of your existing home to determine what reinforcement may be needed. Our designs ensure the new level integrates seamlessly with the existing architecture, both structurally and aesthetically.

Will a home extension match my existing home?

Seamless integration is a priority in every extension we build. We carefully match rooflines, cladding, window styles, and interior finishes so the extension looks like it was always part of the home. Our designers work closely with you to ensure architectural consistency throughout.

Can I live in my home during a home extension?

For most ground floor extensions and granny flats, yes. We stage the work to minimise disruption and maintain safe access to your home. Second storey additions may require temporary relocation during certain phases, particularly when the existing roof is removed. We discuss this during the planning stage so you can prepare.

What Homeowners Say

Real Experiences, Real Results

Throughout the process they have been professional, communicative and supporting. We couldn't have asked for a better team for our first experience with renovating.

Trish

Gold Coast · Home Renovation

The finish is absolutely incredible and was finished within the timeframe provided. Mark is extremely detail conscious and this shines through in the trades he uses.

Erin & Sam

Gold Coast · Bathroom Renovation

Mark was an amazing project manager always one step ahead of the build, completing my project in 6 weeks. Transformed a tired '70s home into a modern beauty.

Susan

Gold Coast · Whole-Home Renovation

Ready to Extend Your Home?

Book a free consultation to discuss your home extension project. We'll assess your property, review council requirements, and provide a detailed scope and quote.