The Gold Coast is the most expensive place in Queensland to renovate, and the reasons have very little to do with the glamour. They are technical. This is a Region B wind zone under AS 1170.2 with almost no topography to slow the coastal wind systems, the corrosion environment within a few hundred metres of the water is classified C4 or C5, canal-front properties carry structural obligations that do not exist anywhere else in the country, and the flood, storm tide and coastal erosion overlays touch a very large share of the residential land.
All of that is manageable. None of it is cheap, and almost none of it appears in national renovation price guides. This guide sets out what renovation work actually costs on the Gold Coast in 2026, where the local premiums come from, and how to build a budget that survives the first site inspection.
For more detail on this part of the project, see Kitchen Renovation Costs on the Gold Coast: What You Actually Pay in 2026.
The Short Answer: Gold Coast Renovation Costs by Scope
All-in figures including labour, materials, waste removal and a builder’s margin. Excludes design fees, council fees and furniture.
- Cosmetic refresh — $35,000 to $80,000. Paint, flooring, lighting, kitchen facelift, bathroom refit, landscaping. Nothing structural, no plumbing relocated.
- Standard full renovation — $140,000 to $320,000. New kitchen, one or two bathrooms, laundry, rewire, replumb, flooring throughout, some wall removal, external work and a deck.
- Renovation plus extension — $350,000 to $750,000. The above plus a 40 to 70 square metre addition, usually opening the house to the water or the north.
- High-end whole-house renovation — $800,000 to $3 million plus. Canal-front and beachfront work, architect-designed, marine-grade specification throughout.
Per square metre rates
- $1,800 to $2,600 per square metre for cosmetic and light renovation in existing rooms
- $2,800 to $4,200 per square metre for a standard renovation with new wet areas, some structural change and services replacement
- $4,200 to $6,200 per square metre for a ground-floor extension on a straightforward site
- $6,000 to $10,000 per square metre for second storeys, canal-front work, beachfront sites and anything requiring marine specification throughout
The top band is where the Gold Coast diverges most from the rest of Queensland. A well-built extension in Robina and the same extension in Mermaid Beach are not the same job, because one of them is being built in a C5 corrosion environment on a site with a coastal erosion setback.
Kitchen Renovation Costs on the Gold Coast
- $20,000 to $30,000. Same-footprint refresh. Flat-pack or entry custom cabinetry, laminate or entry stone benchtop, tiled splashback, mid-range Australian appliances, no plumbing relocated.
- $32,000 to $60,000. The Gold Coast median. Custom cabinetry, porcelain or sintered stone benchtop with a mitred edge, integrated dishwasher, induction cooktop, quality hardware, some layout change, new circuits and a switchboard upgrade.
- $65,000 to $120,000. Full custom joinery including a butler’s pantry, thick stone with waterfall ends, imported appliances, integrated fridge, structural work to open the space to the water or the alfresco.
- $130,000 and above. Designer involvement, stone slab splashbacks, European appliance suite, bespoke metalwork in marine-grade finishes.
The local factors
- Engineered stone containing crystalline silica is prohibited nationally, which has pushed the market to porcelain, sintered stone and natural stone. Expect 15 to 30 per cent more than the equivalent product three years ago, and four to eight week lead times on specific slabs.
- Salt affects kitchen hardware in beachfront and canal-front homes far more than people expect. Standard hinges and runners in an open-plan kitchen twenty metres from salt water degrade in a few years. Specify marine-grade or at minimum a quality European product.
- Ducted rangehoods are essential in this climate. Subtropical humidity plus recirculating extraction produces mould on the ceiling within a season.
- Apartment kitchens cost 20 to 40 per cent more than the equivalent house kitchen because of lift access, waste removal, restricted hours and body corporate conditions. A large share of Gold Coast dwellings are apartments.
Bathroom Renovation Costs on the Gold Coast
- $12,000 to $17,000. Cosmetic — vanity, tapware, toilet, mirror, screen, with existing tiles and waterproofing retained. One to two weeks.
- $18,000 to $24,000. Partial rebuild, wet zones stripped and re-waterproofed, stock fixtures. Three to four weeks.
- $25,000 to $36,000. Full strip and rebuild, re-waterproofed to AS 3740, floor-to-ceiling tiling, mid-tier vanity with stone top, quality tapware, ducted exhaust. Four to six weeks.
- $40,000 to $70,000. Large-format porcelain, freestanding bath, frameless walk-in shower, designer tapware, heated towel rail, niches and shadow-line detailing.
- $75,000 and above. Stone slab linings, imported European fixtures, joinery-grade vanities.
What moves the number
- Relocating the soil stack: $2,500 to $5,000. On a slab it means cutting and re-pouring.
- Asbestos in a pre-1990 bathroom: $2,500 to $7,000 for testing and licensed removal. Gold Coast built heavily in asbestos sheet through the 1960s, 1970s and into the 1980s.
- Ventilation. In this humidity a ducted exhaust to outside with a run-on timer is not optional. Venting into the roof space grows mould in the ceiling insulation within a wet season.
- Small rooms cost more per square metre — roughly $3,000 to $4,000 for a compact bathroom against $2,400 to $3,000 for a large one, because the fixed costs do not shrink.
- Apartment bathrooms carry the body corporate approval process, because the waterproofing membrane is usually common property.
Extension Costs on the Gold Coast
Budget $4,200 to $6,200 per square metre for a ground-floor extension built to a good standard. A 45 square metre open-plan addition runs $190,000 to $280,000 before kitchen joinery, bathroom fit-out or landscaping.
Second-storey additions run $6,500 to $10,000 per square metre. The premium comes from footing upgrades, structural steel, removing and rebuilding the roof, a staircase consuming ground-floor area, and — on the Gold Coast specifically — the wind loading. A two-storey house in Region B with low terrain category carries substantially more bracing and tie-down than the equivalent in an inland suburb.
The overlays that change the cost
- Flood and storm tide inundation. Large parts of the Gold Coast carry a minimum habitable floor level requirement. If your extension has to sit 600 millimetres above the existing floor, that is a design problem and a cost problem.
- Coastal erosion hazard. Beachfront sites carry setbacks from the seaward vegetation line, with habitable structures potentially set back substantially from active dunes. Excavation for basements and pools must demonstrate no adverse erosion impact on neighbouring properties.
- Acid sulfate soils. Widespread across the low-lying coastal plain. Excavation below specified levels triggers management requirements, and that is a real cost on any project involving a pool or a basement.
- Bushfire. The hinterland — Tallebudgera Valley, Currumbin Valley, Mudgeeraba, Bonogin, Tamborine — carries BAL assessment. BAL 12.5 adds roughly $5,000 to $8,000; BAL 29 and above adds five figures for non-combustible cladding and screening.
- Steep land and landslide hazard in the hinterland, driving retaining, engineered footings and access costs.
The Gold Coast Premiums Nobody Quotes For
Corrosion
Properties within about 100 metres of open water are typically classified C5 (extreme marine); the broader coastal strip sits at C4 (severe marine). That reclassifies almost every metal component in the building.
- Grade 316 stainless for structural connectors, fixings, balustrade hardware and anything exposed. A joist hanger that costs around three dollars in a suburban inland job is closer to twenty dollars in 316.
- Marine-grade coating classes on Colorbond, aluminium window systems and powder-coated finishes, with the manufacturer’s warranty confirmed for the actual location
- Epoxy and polyurethane coating systems on structural steel rather than standard paint
- Galvanised anything is a false economy in this zone — it fails within a few years
- Budget 10 to 25 per cent more on all external work in the coastal strip, and closer to 25 to 40 per cent on a beachfront site
Canal-front obligations
If the property fronts a canal, you own and maintain the revetment wall. This is the single largest unbudgeted cost on the Gold Coast.
For more detail on this part of the project, see Renovating a Canal-Front Home on the Gold Coast: A Practical Guide.
- Revetment wall replacement commonly runs $2,500 to $5,000 per linear metre, so a 20 metre frontage is $50,000 to $100,000
- Pontoons, jetties, boat ramps, rock armouring and revetment walls are tidal works requiring a permit. The Gold Coast Waterways Authority reviews the application and the City of Gold Coast is the assessment manager.
- A failing wall affects the house behind it, because canal-side settlement undermines footings and paving
- Get a marine engineer’s assessment of the wall before you buy. It is the canal-front equivalent of a building inspection and it is skipped constantly.
Termites
South-east Queensland has among the highest termite pressure in Australia. Any renovation involving structural timber needs a management system installed and certified, and any pre-purchase inspection should include a specific timber pest report. Remediation of existing damage in a 1970s or 1980s timber-framed Gold Coast house is routinely $15,000 to $60,000.
Body corporate
A very large share of Gold Coast dwellings are apartments governed by the Body Corporate and Community Management Act. Renovation there means committee approval, restricted hours, lift bookings, bonds and acoustic requirements — and 20 to 40 per cent above the equivalent house cost for the same scope.
Professional Fees, Approvals and the Rest
- Building designer: $5,000 to $18,000 for a renovation and extension package
- Architect: 8 to 15 per cent of construction cost
- Structural engineer: $2,000 to $6,000, more where wind loading or coastal conditions drive the design
- Soil test and site classification: $800 to $1,500
- Private building certifier: $2,000 to $5,000 for a domestic renovation
- Development application fees where the work is code or impact assessable: $1,500 to $8,000
- Infrastructure charges where you add a dwelling — approximately $24,000 in sewered areas for a secondary dwelling over 80 square metres
- Coastal, flood or geotechnical reports where an overlay applies: $2,000 to $5,000 each
- QBCC Home Warranty Scheme premium, passed through by the builder on work above the threshold
- Contingency: 10 per cent for newer stock, 15 to 20 per cent for anything pre-1990 or on the water
Building a Budget That Holds
The sequence that works
- Pull the property up on the City of Gold Coast mapping tool and list every overlay — flood, storm tide, coastal erosion, acid sulfate soils, bushfire, landslide, heritage, airport height, light rail corridor.
- Get a building and timber pest inspection. Termites, corrosion of structural fixings, concrete spalling on any balcony, and the condition of the roof.
- On a canal-front property, get the revetment wall assessed by a marine engineer before anything else.
- Get the soil test and site classification, and confirm whether acid sulfate soil management will be triggered by any excavation.
- Confirm the minimum habitable floor level if a flood or storm tide overlay applies, because it governs the extension design.
- Have a designer produce a scheme, then get an outline price before spending on full documentation.
- Get three quotes from builders who work in your specific conditions — canal, beachfront, hinterland or inland are four different skill sets — and compare inclusions line by line.
- Set the contingency and leave it alone.
The Gold Coast rewards preparation more than most markets because the site conditions are more variable. Two houses in the same suburb, one canal-front and one three streets back, can differ by $150,000 on the same scope of work. Knowing which one you have bought is the difference between a project that lands on budget and one that does not.
For the detail on individual parts of a project, see kitchen renovation costs, bathroom renovation costs, home extensions, renovating a canal-front home and whether your project needs council approval.
What Drives the Difference Between Two Houses in the Same Suburb
The Gold Coast has more cost variation within a single suburb than any other Australian market, and it catches people who benchmark against a neighbour’s project. Two houses three streets apart can differ by $150,000 on identical scope. These are the variables that do it.
- Distance from open water. Inside about 100 metres the corrosion category is C5 and every metal component in the building is reclassified. The broader coastal strip is C4. Three streets back it may be neither. This alone moves external work by 15 to 30 per cent.
- Canal frontage. Adds the revetment wall liability — $2,500 to $5,000 per linear metre if it needs replacing — plus tidal works approval timeframes for anything at the water’s edge.
- Minimum habitable floor level. A property where the flood or storm tide level sits above the existing slab needs a suspended floor for any extension, plus a resolved level transition through the house.
- Ground conditions. Fill over soft compressible soils means piled footings. On a 45 square metre extension the difference between a conventional slab and an engineered piled system is $20,000 to $45,000.
- Acid sulfate soils, triggered by excavation depth, adding $5,000 to $30,000 on any pool, basement or deep footing work.
- Construction type. Timber-framed stock in the highest termite-pressure zone in Australia carries a remediation risk that masonry does not.
- House or apartment. Identical scope in a tower runs 25 to 45 per cent higher for access, waste, restricted hours and approvals.
- Hinterland versus coastal. BAL requirements, steep land, geotechnical assessment and trade access add 15 to 30 per cent in the valleys.
Before you benchmark against anyone else’s project, establish which of these apply to your property. The cost guide figures above assume a straightforward site; the premiums are additive and they are the whole reason Gold Coast budgets miss.
A Worked Budget
A 1980s low-set brick house of 170 square metres on a canal block at Mermaid Waters. Full internal renovation plus a 50 square metre extension opening to the water, no pool.
- Design, engineering, energy assessment and certifier: $52,000
- Overlay reports — flood, geotechnical, acid sulfate, marine engineer: $14,000
- Development and building approval fees: $6,500
- Demolition, asbestos removal and waste: $28,000
- Piled footings and site works: $58,000
- Extension, 50m² at $5,400/m² including suspended floor to the required level: $270,000
- Renovation of the existing 170m² at $3,600/m²: $612,000
- Structural opening to the water frontage, engineered: $24,000
- Marine-grade glazing system to the water elevation: $95,000
- Covered outdoor area, 35m²: $48,000
- Termite management and certification: $4,500
- Revetment wall, 20 metre frontage, replacement: $80,000
- Landscaping and external works: $75,000
- Contingency at 15 per cent: $206,000
- Total: approximately $1,573,000
Note what the visible finishes are as a share of that: less than half. The footings, the wall, the reports, the corrosion specification and the contingency account for the rest, and they are the items most often left out of an early estimate.