A fella at Albion Park showed me his car bonnet a while back, paint gone chalky and dull from years of sitting out in the drive baking. He'd found a flat-pack carport kit online for about two grand and wanted to know why I'd charge more than that to put a roof over the same spot. Fair question, and worth answering properly, because the kit price and the built price are measuring two different things.
The kit is a box of steel on a pallet. The built price is that steel, or timber, actually standing up straight, bolted to footings that won't budge, on a slab or ground that isn't dead level, signed off if it needs to be. One's a product. The other's a finished job in your yard. Here's how the real number comes together.
Kit on the ground, or built on site
A basic single steel carport kit, assembled onto an existing slab with easy access, might land around $3,000 to $6,000 all up once someone's actually put it together and anchored it properly. A double, or a timber-framed one built to match the house, runs more like $6,000 to $15,000. Go to a full gable roof in Colorbond to tie in with the roofline, or you've got no slab yet and need concrete poured first, and you're looking at $15,000 to $30,000 by the time it's done.
Where people come unstuck is assuming the kit price is the finished price. It rarely is. You've still got the slab if there isn't one, the footings, the labour to stand it and square it, and often council paperwork on top. None of that's in the box.
What actually drives the figure
The stuff that moves a carport price around, roughly in order:
- Slab or no slab. If you've already got a sound concrete or paved area to build on, beautiful. If it's grass or gravel, you're up for a slab or at least proper footings before anything goes vertical, and concrete isn't cheap.
- Single or double, and the span. Covering two cars with no post in the middle means bigger beams and stronger footings. The wider you go with nothing to hold up the roof, the more the frame costs.
- Flat roof or gable. A skillion or flat roof is the cheaper build. A pitched gable that matches your house looks a hundred times better and costs accordingly, because there's more framing and more roof in it.
- Timber or steel. Steel kits are cheap and quick. A timber-framed carport built and clad to sit with an older weatherboard or brick home costs more but looks like it belongs there, not bolted on.
- Access and slope. Down the side of a narrow block, or cut into a fall like you get all over the escarpment side of the Gong, and there's more digging, more setting out, more hours.
Size, again, isn't the whole story. There's a fixed amount of setup and footing work in any carport, so a small one can feel dear per square metre while a bigger one spreads that cost out.
Do you even need approval
Sometimes yes, sometimes no, and it's worth checking before you buy anything. Plenty of modest carports slip through as exempt work, meaning you can build without an application, provided the structure keeps within the height, floor-area and boundary-distance rules and doesn't poke out past the front of the house where councils get fussier. Break one of those, or sit on heritage or bushfire-prone land, and you're up for either a fast-tracked CDC or the full council route. Carports fall under the same set of rules as pergolas and patios, which I've walked through in council approval for a pergola, patio or carport, and the current figures are on the NSW Planning Portal.
And the money rule again: anything over $5,000 all up needs a licensed builder and a written contract under NSW Fair Trading. Most built carports clear that. Ask whoever you use to show you their licence.
Where the roof earns its keep
The whole point of a carport is keeping the weather off, and out here that means salt, sun and the odd branch off a spotted gum in a southerly. So the roof and the fixings are worth spending on. Standard cheap brackets rust and streak near the coast within a year or two, so we run coated or stainless gear on anything close to the water. If it's a pitched roof tying into your existing one, the flashing has to be right or you'll have leaks down the wall, which is where roofing crosses over into the job.
A carport built once and built properly outlasts three cheap kits and looks like part of the house instead of an afterthought. If you've got a spot that needs covering anywhere from Helensburgh to Nowra, whether it's supply-and-build or you've bought a kit and just need it stood up and certified, that's squarely the sheds and carports work we do day in day out. Give Dave a ring on 0414 007 351 or send through the details and I'll come measure up and give you a straight number.
Want a hand with this at your place? Get a free quote or call 0414 007 351.
