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Driveway extensions, widenings and crossovers

Extra width for the second car, a parking bay for the boat or the van, and the council crossover to reach it, matched to what is already there.

$110 to $160 per m2, supply and install Get a fixed quote (07) 5230 8717

Rates move with site conditions and variations; the number that holds is the written quote after a site measure.


The second most common driveway job on the coast is not a new driveway, it is more driveway: width for a second car, a bay for the boat or the caravan, or a crossover moved or widened so the block actually works. Small pours are unforgiving on price per metre, so this page is straight about how they are quoted.

Extensions and widenings

An extension is poured against the existing slab with its own compacted base and steel, isolated from the old concrete with a joint so the two slabs can move without cracking each other. Levels are matched at the join and the crossfall is carried through so water still leaves the driveway. Where the extension is part of a bigger job, a replacement or a new pour, it borrows the mobilisation and the rate comes down; that arithmetic is shown plainly in the quote.

Crossovers, and the rules that come with them

The crossover is the council’s strip, built to the council’s drawing. Sunshine Coast Council and Noosa Shire both run the same two tier system: a standard crossover is self assessed against the council’s checklist and needs no permit, while a non standard one, wrong width, wrong position, corner block, near a pole or a pit, needs the council’s written approval before any work starts, with an application fee the council sets each financial year. Noosa is the stricter of the two on materials and also requires substantial public liability cover for work outside the boundary, which the contractor carries.

None of this lands on you. The checklist assessment happens at the site measure, and whether your crossover is standard is stated in writing with the quote, along with the council fee if an application is needed.

Estates add a layer

In Aura, driveway and crossover positions are fixed on each lot’s approved plans, and the finish rules come from the release’s design guidelines rather than only the council. Harmony works the same way through its own covenant approvals. On covenant land the approvals path is identified before anything is priced as final.

Getting a number

The pricing page covers what moves small pour rates, and the calculator will give a working range for an extension in seconds. Rates move with site conditions and variations; the number that holds is the written quote after a site measure.

Long exposed aggregate concrete run freshly poured with forms still on
Long run poured, forms still on
Washed exposed aggregate concrete panel with formwork on
Washed back, ready to strip

Where we pour

Baringa, Beerwah, Bells Creek, Buderim, Caboolture, Caloundra, Coolum, Golden Beach, Kawana, Landsborough, Maleny, Maroochydore, Mooloolaba, Morayfield, Mountain Creek, Nambour, Nirimba, Noosa, Palmview, Palmwoods, Peregian Beach, Sippy Downs and the rest of the coast: all suburbs.

How a job runs

Six steps between enquiry and parking on it

  1. 01

    Site measure

    Levels, falls, access and the ground itself, measured at your place. If the block slopes to the garage, drainage is planned now, not discovered at the pour.

  2. 02

    Fixed written quote

    One price for the scope measured, with the base, steel and thickness stated in writing. Any crossover approval or estate covenant your job needs is identified here.

  3. 03

    Out with the old

    On replacements, the existing driveway is broken out and carted off, and the base is recompacted. New pours start with the ground, not on top of what failed.

  4. 04

    Base, forms and steel

    Compacted base to suit sand or clay, forms to the setout, mesh on chairs so it works inside the slab. This day decides how long the driveway lasts.

  5. 05

    Pour and finish

    Poured at 25 MPa and finished in one continuous run, timed for the weather. Broom, colour or the finish your covenant requires.

  6. 06

    Cut and cure

    Control joints cut on planned lines within a day, then the slab is kept curing. Cars stay off for seven days; the concrete keeps hardening for a month.

Questions

Driveway extensions and crossovers, answered

What does a driveway extension cost?

Extensions run $110 to $160 per m2 depending on size, finish and access, a little above full driveway rates because a truck, a crew and a day mobilise for a smaller pour. Pouring the extension alongside a replacement brings the rate down. Rates move with site conditions and variations; the number that holds is the written quote after a site measure.

Do I need council approval to widen my crossover?

Widening changes the crossover's dimensions, which both councils treat as construction. If the widened crossover still meets the council checklist it is self assessed with no permit; if not, written approval is needed before work starts. Which side yours falls on is stated in writing on your quote.

Will the new concrete match the old?

New concrete never perfectly matches weathered concrete on day one; the honest answer is that the tone difference softens over a year or two of sun and rain. Joint placement is used to make the join read as a deliberate line rather than a patch, and finishes are matched as closely as samples allow.

Can you pour a pad for a caravan or boat?

Yes, that is a standard extension job, poured thicker with heavier mesh where the load asks for it. Falls are set so the pad drains, and the approach is graded so nothing scrapes.

Next step

A fixed written price for your driveway, after a site measure.

Call (07) 5230 8717 Fixed quote