How Much Does a Carport Cost in Australia 2026

Last updated: October 2026

A carport costs roughly $450–$640 per square metre installed in Australia in 2026, which puts a single carport at about $8,600–$10,300 and a double at about $16,200–$22,900 including GST for a custom build. Kit carports land well under that — more on why the two numbers differ so much further down, because that gap is where most of the confusion in carport quotes lives.

Those figures come from a rate card, not a guess. Leadkit doesn't have a carport-specific calculator in its library yet, so we've priced carports on the next closest thing we do have real rates for: Leadkit's pergola and patio calculators, which price exactly the same build — posts, beams, a Colorbond roof and footings over an open footprint. We'll show you every input we used so you can check our working.

If you're in Sydney, Melbourne, Brisbane or Perth and getting carport quotes right now, the useful thing to know up front is that the frame material and whether the structure bolts to your house move the price far more than the roof sheets do.

Estimate disclaimer: All prices in this article are indications only. Your tradie will confirm the final price after assessing the job site, access, soil conditions and wind rating.

Key takeaways

• A custom-built carport costs roughly $450–$640/m² installed inc. GST in 2026 on Leadkit's pergola and patio rate card — the same build method a carport uses.
• A single carport (3 × 6 m, 18 m²) costs about $8,600 inc. GST with a timber frame and a Colorbond roof, attached to the house.
• A double carport (6 × 6 m, 36 m²) costs about $16,200–$22,900 inc. GST, depending on frame material and whether council approval is needed.
• Kit carports are materially cheaper — published 2026 Australian cost guides put an installed double at roughly $6,000–$15,000, because a bolt-together kit uses standard spans and far less site labour than a custom build.
• A new concrete slab adds $2,750–$4,800 inc. GST for a carport-sized pour on Leadkit's slab rate card, and small slabs almost always hit a minimum job fee.
• A double carport is too big to be exempt development in NSW — the exempt cap is 20 m² (25 m² on lots over 300 m²), and a double is 36 m².
• Upgrading the frame from timber to aluminium adds 60% to the structure line — the single biggest lever in a carport quote.

In this guide

• How much does a carport cost in Australia?
• What does a carport quote actually include?
• How much does a double carport cost?
• How much does a Colorbond carport cost?
• What does the concrete slab under a carport cost?
• Carport vs garage cost — what's the real difference?
• Do you need council approval for a carport?
• Why do custom carport quotes come in above kit prices?
• What makes your carport quote move up or down?
• Frequently asked questions about carport costs
• Where to get an instant carport price estimate

How much does a carport cost in Australia?

A custom-built carport costs roughly $450–$640 per square metre installed including GST in Australia in 2026. Run that across the sizes Australians actually build and you get the table below.

This is a price indication only. Your tradie will confirm the final price after assessing the job.

How we calculated these numbers

Methodology, plainly: Leadkit's calculator library holds 202 active calculators across 112 trade categories, and none of them is a carport calculator. What we do have is the Pergola Quote Calculator — a quote-type tool with a full rate card — and a carport is built the same way a roofed patio is: footings, posts, beams, battens and roof sheets over an open footprint.

So every figure above is computed from that calculator's default Australian rates: $250/m² for a timber frame, $160/m² for Colorbond roofing, a 10% premium when the structure attaches to the house, $1,200 for council and engineering and a $3,000 minimum job fee, with GST added at 10% on the subtotal. Frame material scales that base rate — timber ×1.0, Colorbond steel ×1.2, structural steel ×1.4, aluminium ×1.6 — and roof type scales the roof rate: Colorbond ×1.0, polycarbonate ×0.75, open frame ×0.

The "quoted range" column is the ±15% band the calculator itself shows customers rather than a single hard number, because no tradie can price footings they haven't dug yet. Leadkit owns and publishes that calculator, so treat this as our own rate data rather than independent third-party survey data — and note the rate card is a pergola card, which is the honest caveat on all of it.

What does a carport quote actually include?

A carport quote has four or five real line items, and on a standard job the frame is roughly 55–65% of the total. Here's the breakdown for the most common build we price — a 36 m² double with a Colorbond frame and Colorbond roof, attached to the house.

This is a price indication only. Your tradie will confirm the final price after assessing the job.

That attached premium is small in dollars and large in consequence. It covers the ledger — the structural beam bolted through your wall into the house framing — plus the flashing that stops water tracking back down behind it. Get the flashing detail wrong and you've built a very expensive way to rot your eaves.

Two more terms worth knowing before you read a quote. Footings are the concrete pads your posts sit on, usually with galvanised post stirrups so the timber or steel never touches soil. And fall is the slope built into the roof so water actually drains; a flat-looking skillion carport roof isn't flat at all, it's pitched a few degrees to one side.

Our pergola and patio cost guide walks the same line items in more detail if you're weighing a roofed patio at the same time.

How much does a double carport cost?

A double carport price lands between about $16,200 and $22,900 inc. GST for a custom build on our rate card, or roughly $6,000–$15,000 installed if you go the kit route according to published 2026 Australian cost guides. A double is normally 6 × 6 m, which is 36 m² — exactly double a standard single.

The honest surprise in the maths is that doubling the footprint doubles the price almost exactly. There's no volume discount hiding in a carport, because the cost is per square metre of frame and roof, and a double needs twice the beams, twice the sheets and usually one extra line of posts.

This is a price indication only. Your tradie will confirm the final price after assessing the job.

Not ready to ring around? Send your measurements and job details through the pergola and patio quote form — it's a details-only form rather than an instant estimate, so a tradie reads the brief and comes back to you with a price.

One sizing note from the tool itself: its area input accepts 1–120 m² in 0.5 m increments, with a 4 × 5 m default. Every carport size in this guide sits comfortably inside that band, which matters — rate-card formulas are only reliable within the bounds they were built for, and a 200 m² machinery shelter is a different trade with different rates.

How much does a Colorbond carport cost?

A Colorbond carport cost sits about 20% above the timber-framed equivalent: around $9,110 inc. GST for a single and $18,220 inc. GST for a freestanding double on default rates. The Colorbond frame multiplier on our rate card is ×1.2, so the structure line moves from $250/m² to $300/m², while the roof rate stays at $160/m².

Worth separating two different Colorbond prices, because they get conflated constantly:

• Colorbond roof sheeting on a carport or pergola: $160/m². That rate covers the sheets plus the battens, fixings, flashings and the labour of setting a fall over an open structure.
• Colorbond roof sheeting on a house reroof: $70/m². That's the supply-and-install rate in Leadkit's roofing quote calculator, where the sheets land on existing battens and existing structure.

Same product, less than half the rate — because on a reroof you're paying for sheets and screws, and on a carport you're paying for sheets, screws and the entire structure that holds them up. If a carport quote prices roofing at house-reroof rates, something's been left out.

For comparison, the roofing calculator prices concrete tile at $60/m² and terracotta tile at $120/m². Tiles need a steeper pitch and a heavier frame, which is why you almost never see a tiled carport — the frame cost swamps the material saving.

Colorbond's practical appeal in Australian conditions is that it comes pre-finished, doesn't need painting, and the colour range matches what's already on most roofs and fences. If you're matching a boundary fence at the same time, our Colorbond fence cost per metre guide covers that side of it.

What does the concrete slab under a carport cost?

A new concrete slab for a carport costs $2,750–$4,800 inc. GST on Leadkit's slab rate card, depending on size, thickness and how much site prep is needed. If you're parking on an existing driveway or an existing slab, this cost disappears entirely — which is why some quotes look thousands cheaper than others for the same structure.

This is a price indication only. Your tradie will confirm the final price after assessing the job.

Those come from the concrete slab cost calculator defaults: $300/m³ for concrete supply and placement, $35 per lineal metre of formwork, $6/m² for standard SL72/SL82 steel mesh, $15/m² for fill and levelling, $45/m³ for excavation, a $600 flat pump fee when trucks can't reach the formwork, and a $2,500 minimum job fee.

Here's the single most useful thing in that rate card for a carport buyer. A 3 × 6 m single carport slab computes to about $1,750 of actual work — and then hits the $2,500 minimum. A concreter still has to mobilise a truck, a crew and a vibrating screed for a 2.25 m³ pour, and that doesn't get cheaper just because your slab is small. If you're already planning a slab, pouring it slightly larger costs much less per square metre than pouring a second one later.

Thickness matters for a vehicle. The calculator's own guidance maps 100 mm to paths and shed floors, 125 mm to garages and light vehicles, and 150 mm to house slabs and driveways. A carport slab that will carry a dual-cab ute wants 125 mm as a floor, not 100 mm. The finish is where the money leaks: broom finish is free, trowelled smooth adds $8/m², coloured adds $20/m² and exposed aggregate adds $35/m² — which on 36 m² is $1,260 of pure appearance.

Our concrete slab cost per square metre guide goes deeper on reinforcement and site prep if you want the long version.

Carport vs garage cost — what's the real difference?

A carport is substantially cheaper than a garage of the same footprint, because the carport stops at posts, beams and a roof while the garage adds walls, cladding, a door, a structural slab and a building approval in every state. We're not going to put a dollar figure on a garage build in this guide — Leadkit has no garage-build calculator and no garage rate data, and a number we can't source isn't worth printing.

What we can do is show you exactly what the extra money buys, because that's the decision you're actually making.

Cost comparison is structural, not a price quote. Your tradie will confirm the final price after assessing the job.

The slab is the one line we can price for both, and it's close to identical — a vehicle-bearing 6 × 6 m pour is about $3,390 inc. GST either way on our rate card, though a garage slab usually steps up to a 150 mm engineered design with edge beams, which the calculator prices at $25/m² for reinforcement instead of $6/m².

On value: an enclosed garage is generally treated as the more permanent improvement by the property market, while a carport tends to return more per dollar spent because it costs so much less to build. We don't hold resale data, so take that as the general view rather than a statistic — a local agent will give you a far better read on what buyers in your suburb expect.

The practical split most Australian homeowners land on: carport if you want the car out of the sun and hail and you park daily, garage if you want secure storage, a workshop or a lockable space.

Do you need council approval for a carport?

Sometimes — and a double carport almost never qualifies for the exemption. In NSW, a carport can be built as exempt development under the State Environmental Planning Policy (Exempt and Complying Development Codes) if it meets every criterion: floor area no more than 20 m² (25 m² on lots over 300 m²), behind the front building line, under 3 m in height, and at least 900 mm from the boundary. Check the current criteria with NSW Planning before you rely on them.

Do the arithmetic on that cap and the pattern is obvious. A single carport at 18 m² can fit under 20 m². A double at 36 m² can't come close, so it needs a Complying Development Certificate or a full Development Application.

The rules change at every border:

• Victoria — a building permit is required for a carport in almost all cases regardless of size, and a planning permit may apply on top if your property carries an overlay such as heritage. The Victorian Building Authority is the body to check.
• Queensland — building approval is generally required, with only narrow exemptions for very small freestanding structures in some council areas. Licensing and approval questions go to the QBCC.
• Everywhere — the structure still has to comply with the National Construction Code, including wind loading under AS/NZS 1170.2. The Australian Building Codes Board publishes the NCC.

That wind rating is the hidden cost driver in coastal and cyclonic areas. Your wind region and terrain category determine post sizes, footing depths and fixing specs — which is a large part of why an identical carport costs more in Cairns than in Ballarat.

Our rate card puts council and engineering at $1,200 by default, with a stated Australian band of $500–$2,500 covering the development application submission plus structural engineering certification. Budget for it on any double, and don't be surprised if a heritage overlay or a corner block pushes you toward the top of that band.

Why do custom carport quotes come in above kit prices?

Because a kit carport sells you standard spans and a custom carport sells you a structure engineered for your site. Published 2026 Australian cost guides put installed doubles at roughly $6,000–$15,000 and quote Colorbond materials alone for a 6 × 6 m skillion-roof double at around $6,100–$8,400. Our rate card produces $16,240–$22,900 for the same footprint. Both numbers are real; they're pricing different products.

Here's what the custom price carries that a kit price doesn't:

• Engineered footings sized for your soil rather than a generic footing schedule in a kit manual.
• Site labour on a site that isn't flat — cut, fill, levelling and the odd retaining detail.
• Custom spans so posts miss your driveway, your sewer line and your neighbour's boundary.
• Proper attachment to the house with a ledger, flashing and weatherproofing, instead of a freestanding frame set clear of the wall.
• A builder carrying the structural certification and the insurance behind it.

A kit genuinely is the right answer for a lot of people — flat block, standard span, freestanding, no approval drama. If that's you, the kit price is the price. If your block has a fall across it, or the carport has to attach to the house and clear an existing window, the custom number is what you'll actually be quoted.

Across the quotes generated through Leadkit's outdoor structure calculators, the inputs that homeowners most often leave on default are the two that matter most — whether the structure attaches to the house, and whether a new slab is needed. Both are toggles, both change the total by thousands, and both are set to the cheaper option by default.

What makes your carport quote move up or down?

Frame material, attachment, approval and site access, roughly in that order. Here's each lever with the real multiplier behind it.

1. Frame material — up to 60%. Timber is the base at $250/m². Colorbond steel is ×1.2, structural steel ×1.4 and aluminium ×1.6. On a 36 m² double, that's the difference between $9,000 and $14,400 on the structure line alone.

2. Roof type — minus 25% to plus 350%. Colorbond is the baseline at $160/m². Polycarbonate drops to ×0.75 ($120/m²) and lets light through. An open frame is $0 but gives you shade, not shelter. An adjustable louvre system is ×4.5 ($720/m²) — fine on an alfresco, rarely sensible over a car.

3. Attached or freestanding — 10% of the structure cost. Attaching adds the ledger, flashing and weatherproofing. The rate card's stated Australian band is 5–15%.

4. Council and engineering — $500–$2,500. Mostly unavoidable on anything bigger than a single.

5. New flooring — $120/m² and up. Concrete is the base. Pavers are ×1.4 ($168/m²), timber decking ×2.1 ($252/m²) and composite ×2.6 ($312/m²). Decking under a carport is unusual; under an adjoining patio it's common.

6. Site access — up to 20% on the concrete. The slab calculator applies ×1.1 for tight access and ×1.2 for difficult access: rear yards, steep blocks and long pump lines. Access is also why a $600 pump fee appears on some slab quotes and not others.

7. Minimum job fees — $2,500 to $3,000. Small carports and small slabs both bottom out at a minimum. It's why a tiny job rarely feels like good value per square metre.

Our calculator library reflects how much of this is site-specific: of 202 active calculators, 108 ask for a suburb or postcode and 76 accept photo uploads, because for structural outdoor work the photos often carry more information than the measurements do. Send photos with your enquiry — of the wall you want to attach to, the ground you want to build on, and the access a concrete truck would use.

Frequently asked questions about carport costs

Q: How much does a carport cost in Australia in 2026?

A: A custom-built carport costs roughly $450–$640 per square metre installed including GST, which works out to about $8,600 for a single 18 m² carport and $16,200–$22,900 for a 36 m² double. Kit carports are cheaper — published Australian cost guides put installed doubles at roughly $6,000–$15,000 — because they use standard spans and far less site labour. The figures in this guide are computed from the default rates in the pergola and patio quote calculator in Leadkit's calculator library, which prices the same posts-beams-and-Colorbond-roof build a carport uses. All of it is a price indication only; your tradie confirms the final price after seeing the site.

Q: How much does a double carport cost?

A: A double carport price is about $16,240 inc. GST for a freestanding timber frame with a Colorbond roof, rising to about $19,400 with a Colorbond steel frame attached to the house and about $22,900 for a structural steel frame that also needs council approval. A standard double is 6 × 6 m (36 m²). There's no bulk discount in going double — the cost is per square metre of frame and roof, so twice the footprint is close to twice the price.

Q: Is a carport cheaper than a garage?

A: Yes, substantially — a carport stops at footings, posts, beams and a roof, while a garage adds wall framing, cladding on three or four sides, a garage door and motor, a thicker structural slab, usually power and lighting, and a building approval in every Australian state. We don't publish a garage figure because Leadkit holds no garage rate data. The one line we can price for both is the slab, and it's nearly identical: a vehicle-bearing 6 × 6 m pour is about $3,390 inc. GST either way, though garage slabs usually step up to an engineered design.

Q: Do I need council approval for a carport?

A: It depends on your state, your size and your block. In NSW a carport can be exempt development if it's 20 m² or less (25 m² on lots over 300 m²), sits behind the front building line, stays under 3 m high and keeps 900 mm off the boundary — which means a single might qualify and a 36 m² double won't. Victoria requires a building permit for carports in almost all cases, and Queensland generally requires building approval. Budget $500–$2,500 for the development application and structural engineering certification, and confirm the rules with your own council before ordering anything.

Q: How much does a Colorbond carport cost?

A: A Colorbond carport costs about 20% more than the timber-framed equivalent — roughly $9,110 inc. GST for a freestanding single and $18,220 inc. GST for a freestanding double on default rates, because the Colorbond frame multiplier is ×1.2 on a $250/m² timber base. Colorbond roof sheeting over a carport is priced at $160/m² in our rate card, which is more than double the $70/m² house-reroof rate — on a carport you're paying for the structure holding the sheets up, not just the sheets.

Q: Does a carport add value to a house?

A: Covered parking is generally viewed as a positive by Australian buyers, particularly in hot or hail-prone areas, but an enclosed garage is usually treated as the more permanent improvement. A carport tends to return more per dollar spent simply because it costs so much less to build. Leadkit doesn't hold property resale data, so treat that as the general market view rather than a statistic — a local agent will tell you what buyers in your suburb actually expect, and in some inner-city suburbs off-street parking of any kind is the valuable part.

Q: How much does the concrete slab under a carport cost?

A: A carport slab costs $2,750–$4,800 inc. GST on our slab rate card. A 3 × 6 m single slab and a flat 6 × 6 m double slab both land on the $2,500 minimum job fee before GST, because mobilising a truck and crew costs the same whether the pour is 2.25 m³ or 4.5 m³. A 6 × 7 m, 150 mm slab with mesh and rebar, excavation and tight access comes in around $4,720. Go 125 mm thick rather than 100 mm if a ute or 4WD will park on it.

Q: How long does a carport take to build?

A: A straightforward kit carport on an existing slab is typically a one to two day install once materials arrive. A custom build with new footings runs longer, because concrete footings need curing time before the frame goes up, and a new slab needs several days before vehicles drive on it. The approval timeline is usually the long pole — a development application can take weeks, which is why the approval question is worth answering before you start getting quotes.

Where to get an instant carport price estimate

A carport cost in Australia comes down to four numbers: your footprint in square metres, your frame material, whether it attaches to the house, and whether you need a new slab. Settle those four and you can sanity-check any quote you're handed.

Before you call a builder, do two things. Measure the footprint properly — length times width, in metres, including the bit of roof that overhangs. And decide whether you're attaching to the house, because that single toggle changes the structure, the approval pathway and the weatherproofing detail.

Want an instant price indication? Use the free pergola and patio quote calculator — it's the closest match in the library to a carport build, it takes about 30 seconds, and it emails you a full breakdown. Results are an indication only; your tradie confirms the final price after assessing the job.

Run a tradie business and sick of quoting carports by phone? Embed a free Leadkit calculator on your own site in 60 seconds, set it to your own rates, and every enquiry arrives with the measurements, the material choice and the contact details already filled in. No credit card needed.