Concrete Extensions
More room, seamlessly joined.
Need an extra car space, a wider path or a bigger patio? We extend existing concrete with dowelled joints for strength, matching the level and finish so the new section reads as part of the original.
Often chosen with concrete driveways, patios & alfresco areas, concrete cutting & saw cutting.
Typical job: 2–4 days · Site measure: free
What’s included
- Assessment of existing concrete
- Saw-cut clean edge to existing slab
- Dowel bars for a strong joint
- Level and fall matching
- Join line, levels and finish blended into your existing slab
Finish options
- Driveway widening — Add space for a second car, boat or trailer.
- Patio extensions — Grow your outdoor living area.
- Path additions — Link paths, gates and garden areas.
Specification
| Joint | Dowelled to existing slab |
|---|---|
| Edge | Saw-cut clean before pour |
| Thickness | Matched to existing |
| Finish | Matched as closely as possible |
What affects the price
Every job is priced after a free site measure. Your fixed, itemised written quote shows each of these:
- Size of the extension
- Dowelling into existing concrete
- Matching the existing finish or colour
- Removing turf, gardens or edging
Guide: Driveway crossovers on the Gold Coast
Concrete Extensions questions, answered
Will the extension match my existing concrete?
We get as close as possible, but new concrete will look slightly different from aged concrete at first. Sealing both sections helps them blend.
Will the join crack?
Dowel bars and a proper joint keep both slabs moving together and prevent a step forming between them.
How is a new section joined to old concrete?
We drill steel dowels into the edge of the existing slab and epoxy them in, so the extension can’t drop or lift independently. A formed joint keeps the junction straight.
Can I extend a driveway to the side boundary?
Usually, provided drainage works and any easements are respected. We check for stormwater, sewer and boundary setbacks before we form up.
Is it better to extend or replace the whole slab?
If the existing concrete is level and sound, an extension saves money. If it’s cracked, stained or a very different colour, replacing it or resurfacing everything together gives a better result.
Get a fixed written quote
Call 0404 859 045 or request a free site measure.
