Why Small Asphalt Jobs Cost More Per Metre: Call-Out Maths
You measured the damaged patch outside your gate. Four square metres, give or take. Then you found a big resurfacing company's website quoting per-square-metre rates for asphalt, multiplied it out, and got a number around a third of the quote sitting in your inbox.
So either someone is trying it on, or the maths works differently at small sizes. It is the second one, and the reason is worth two minutes of your time, because once you see it you can use it to buy better.
The fixed stack: what every visit costs before any asphalt goes down
A small asphalt repair is not a scaled-down resurfacing job. It is a full mobilisation pointed at a small target. Before the first shovel of mix hits your driveway, the contractor has already committed to a stack of costs that barely change whether the job is 4m2 or 40m2:
Crew time for the day. Two or three people are travelling to you, working, and travelling back. A 4m2 patch does not take a tenth of the labour of a 40m2 one, because most of the day is setup, travel and pack-down.
The truck and plant. Compactor, saw, tools, and the vehicle that carries them all cost the same to send across Auckland whatever the job size.
A minimum load of material. More on this below, because hot mix is the real culprit.
Site setup. Cones, signage, and keeping cars and pedestrians clear takes the same effort for a small patch as a big one.
Cut-out and disposal. Sawcutting the failed area, digging it out, and paying to dump the spoil is a per-visit cost with a high floor.
Divide that stack by 4m2 and the per-metre number looks steep. Divide it by 400m2 and it almost disappears. That is the whole story.
The curve: from painful to cheap in fifty square metres
Plot per-m2 cost against job size and you get a curve that falls steeply, then flattens.
At 1-2m2, almost everything you pay is the fixed stack. That is why a standard patch is quoted as a job price, not a rate; ours start from $450, quoted fixed from your photos. At 10m2, the fixed stack is spread thinner and the rate drops fast. Somewhere around 50m2 the curve goes quiet: material and laying labour now dominate, and adding more area adds cost at close to the true marginal rate. On larger carpark areas that lands around $160-180 per m2, which is the kind of number the resurfacing sites advertise.
Both numbers are honest. They just sit at opposite ends of the same curve. Comparing a 4m2 quote against a 400m2 rate is comparing the first taxi kilometre, flagfall included, against the hundredth.
Hot mix has a minimum load, and it will not wait
The other constraint people miss is the material itself. Hot mix asphalt leaves the plant at roughly 150 degrees and has a working window measured in hours, not days. It cannot sit in the yard for next week's small jobs.
That means every visit carries a minimum practical load from the plant, whether the hole needs all of it or not. A 4m2 patch might use a fraction of that load; the rest is a cost of doing the job properly rather than waste on your invoice line. It is one reason hot-mix patching starts from $700 while smaller cold-applied patches can be done for less. Cold mix suits some repairs, but where the defect needs hot mix, the plant's minimums are part of the price.
How to buy better: make the fixed stack work harder
You cannot argue the fixed stack away, but you can spread it. Three practical moves:
Batch with a neighbour. If the house two doors down also has a broken driveway edge, one visit covering both jobs splits the mobilisation. Both of you pay less than you would alone.
Bundle your defects. Walk your whole property before you ask for a price. The pothole by the gate, the cracked edge by the garage, the sunken patch near the letterbox: fixing them in one visit is far cheaper than three separate call-outs.
Join a maintenance round. For carparks and multi-site portfolios, a scheduled round that sweeps up defects across sites is how property managers get closer to the flat end of the curve. The crew is already mobilised; your site just becomes a stop.
What a fixed price does with all this
Here is the part that matters if you are staring at that quote. When a contractor quotes per-m2 and the job runs long, the surprise is yours. When we quote a fixed price from your photos, the mobilisation maths becomes our problem. We have to size the load, the crew time and the disposal correctly before we commit, and the number you accept is the number you pay: deposit up front, balance by bank transfer or card, and a dated before-and-after photo report when the job is done.
So do not compare your small-job quote to a resurfacing rate; compare it to the cost of the visit it actually is. Then make the visit count. Photograph every defect on the property, one wide shot and one close-up each with something for scale, and send us the photos for a fixed price. You will have a quote within 24 hours, covering everything worth fixing in one trip.
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