Exposed Aggregate Driveway Cost per m2 vs Plain Concrete

Exposed aggregate concrete typically costs $7,200 for a standard 50 m² driveway, against $4,450 for plain concrete, both including GST. That gap is the price of extra labour, sealing and a finish that hides wear far better than a flat grey slab.

Our full cost guide covers every driveway type: New driveway. This article answers a narrower question: is the exposed aggregate premium worth it for your driveway?

What you pay for each surface

Here is how the surfaces compare on a typical mid-range job:

Material	Typical	Usual range	Lifespan
Asphalt (blacktop)	$3,850	$3,000 – $5,000	15-30 years
Plain concrete	$4,450	$3,450 – $5,800	30-40 years
Stencilled or stamped concrete	$6,800	$5,300 – $8,850	–
Exposed aggregate concrete	$7,200	$5,600 – $9,350	–
Concrete or clay pavers	$8,150	$6,350 – $10,600	25-75 years

Per square metre, divide the typical figure by the 50 m² default size. Smaller drives cost more per m² because the fixed costs (concrete pump or truck call-out, setup, minimum labour) are spread over less area.

Why exposed aggregate costs more

The concrete itself is a small part of the difference. Most of the premium comes from the process:

• Aggregate mix. The concrete is ordered with selected stones, which cost more than a standard mix.
• Timing. The surface is washed or sprayed with a retarder and then washed back at exactly the right moment, usually within hours of the pour. Miss the window and the finish is patchy. That demands more skilled hands and often a bigger crew.
• Washing and disposal. Cement slurry has to be contained and removed, not left to run into the street or stormwater.
• Sealing. Most installers recommend a penetrating or film-forming sealer to lock the stones in and make the surface easier to clean. It adds materials and a second visit or extra time on site.

We build the figure from labour hours multiplied by local rates, plus materials, then check it against market prices and real quotes.

Where the premium pays back

Exposed aggregate earns its cost in a few situations:

• Grip. The textured surface is less slippery when wet than a trowelled or broom-finished slab. That matters on a sloping drive or in a shaded, damp yard.
• Hiding marks. Oil drips, tyre marks and small hairline cracks are far less visible in a mixed-stone surface than on plain grey concrete.
• Long-term look. A well-laid, well-sealed surface can stay attractive for many years with little more than occasional washing.
• Street appeal. If the drive is a prominent part of the front of the house, the finish can lift how the whole property looks.

Where it doesn't

Skip the premium, or choose another surface, when:

• Budget is tight. Plain concrete gives you the same structural strength. Texture and colour are the only difference.
• You need access soon. If the weather or a tight programme makes timing risky, a simpler finish is more forgiving.
• You'll be digging it up. If services, a future extension or a new crossover are likely, a repair patch on exposed aggregate will rarely match the original stone mix.
• You plan to sell soon and money is limited. A tidy broom-finished slab does the job.

If you want a patterned look without the aggregate process, compare it with stencilled concrete ($6,800) or pavers ($8,150), which are easier to repair in sections.

Hidden costs to ask about

These are the items that make two quotes for the "same" driveway look very different:

• Ground conditions. Soft or clay ground needs a deeper dig and more sub-base. Compare the quote with the base option in our driveway guide: $8,400 is the figure for the deeper dig.
• Demolition. Breaking out an old slab or removing asphalt is often a separate line item.
• Drainage. A channel drain across the entrance is commonly needed where water would otherwise run toward the house or garage.
• Sealer and resealing. Ask what product is used, whether it is included, and how often it should be reapplied. Resealing is a recurring cost many owners forget.
• Control joints and reinforcement. Cutting joints and using mesh or bar helps control cracking. Ask what is included.

For a job that involves moving the garage door or opening, see our garage door guide: Garage door. If you are fencing at the same time, fence costs are covered here: Fencing.

Durability trade-offs

Concrete strength is the same under either finish; the slab's performance depends on base preparation, thickness, reinforcement and curing. The difference is at the surface. Exposed aggregate can lose stones over time if it is poorly washed back or left unsealed, and pressure washing too hard can speed that up. Sealing and gentle cleaning keep it in good condition.

Plain concrete is simpler to patch, but cracks and stains show up more. Neither finish compensates for a thin slab or a poor sub-base, so put money there first.

How to compare quotes

Before you accept a price, check that every quote states:

• the surface type and the aggregate mix
• slab thickness and reinforcement
• the sub-base depth and what is assumed about the ground
• whether sealing, control joints and drainage are included
• what happens to the old surface

If a number looks out of line, use our quote checker ("is my quote fair") to test it against what we would expect for your size and options. Because the premium is mostly labour, a very low exposed aggregate quote is a warning sign about rushed finishing, not a bargain.

Bottom line

Choose exposed aggregate if grip, hidden wear and appearance matter and you can afford the premium over plain concrete. Choose plain concrete if you want a strong, simple, lower-cost surface and are happy with a plainer look. Either way, spend on the base first and get the sealing and drainage written into the quote.