Home Extension Cost in Gold Coast (2026)
On the Gold Coast an extension answers to salt air and, for apartments, the body corporate before anything else.
Your home extension details
Approximate added floor area in square metres.
Your estimate sits within the typical range.
Site access, slope and connecting to existing services can add tens of thousands, get a site assessment early.
Where the money goes
Estimated breakdown for your configuration
💰 Ways to save
- Single-storey on a flat, accessible block is the cheapest way to add space.
- A simpler roofline and standard ceiling heights keep costs down.
or from $543/week over 5 years , indicative finance
How we estimate this
Home extensions in Australia are typically priced per square metre, about $2,400/m² for a basic single-storey addition to $4,500/m²+ for premium or double-storey work in 2026.
Pricing reviewed: June 2026.
What a home extension costs in Gold Coast
A high share of Gold Coast dwellings are high-rise apartments and canal homes, so an extension or major alteration frequently means body-corporate approval, lift or crane access and strict building logistics that a suburban backyard job avoids. On the canal estates, sandy soils and reclaimed fill can mean footings reach deeper for stable bearing, adding to the groundwork.
Pervasive salt air drives corrosion, so an extension here specs marine-grade fixings, corrosion-resistant hardware and durable external finishes as a matter of course, not an upgrade. Labour tracks close to Brisbane's off the shared south-east Queensland trade pool, keeping rates reasonable, while the subtropical UV and storm season push roofing, glazing and weather detailing up the spec for a build that is meant to last.
Compare against the national picture: Home Extension Cost in Australia →
Home Extension Cost in other cities
Frequently asked questions
How much does a home extension cost per square metre in Australia?
In 2026, single-storey extensions typically cost $2,400–$3,500/m² and double-storey $3,500–$4,500/m²+, depending on finish and site conditions.
Is it cheaper to extend or move house?
Extending avoids stamp duty, agent fees and moving costs. For many families a well-planned extension adds value above its cost, though this varies by suburb.
Do I need council approval for a home extension?
Most extensions need development approval or a complying development certificate. Requirements vary by state and council, your builder or a private certifier can advise.