Secondary dwelling slabs · Sydney
Granny Flat Slabs Sydney
A granny flat slab is a house slab on a smaller footprint, usually in a rear yard with restricted access. The two things that decide how it goes are access for the concrete and getting the plumbing penetrations in the right place before the pour.
Both get resolved at quoting stage rather than on the day.
32MPa
20mm aggregate
S72
Mesh, on chairs
AS
Australian Standard
What a quote covers
Granny Flat Slabs — what's included
Every quote is itemised, so you can see what the concrete, the reinforcement and the labour each cost rather than a single figure.
Request a Quote- Site levelling and base preparation
- Formwork and set out
- Plumbing penetrations positioned before the pour
- Steel fixing on chairs, abelflex to the perimeter
- Concrete pump for rear yard access
- 32MPa concrete at 20mm aggregate
- Finishing and saw cutting
- Spoil carted away
Worth knowing
How we approach granny flat slabs
Penetrations set, not cut in later
Waste and water penetrations are positioned and boxed before the concrete goes down. Coring them afterwards means cutting through the reinforcement.
Rear yard access is priced in
Most granny flat slabs sit behind an existing house. The pump, and getting the spoil back out through a side gate, are in the quote from the start.
How a project runs
Seven stages
The sequence is the same on every project we quote, granny flat slabs included.
- 01
Demolition and excavation
Existing slab removed, ground opened up and a skip brought on site. Spoil is carted away rather than left at the frontage.
- 02
Levelling and base
Base graded and compacted. No quantity of concrete corrects a poorly prepared subgrade.
- 03
Formwork
Boxed and pegged to finished levels, with falls set so water drains away from the building.
- 04
Steel fixing
S72 reinforcing mesh raised on plastic chairs so it sits within the slab, with abelflex to the perimeter.
- 05
The pour
32MPa at 20mm aggregate, pumped where access requires it. Driveways are poured at 130mm.
- 06
Finishing
Screeded, floated and hand finished while the concrete is still green.
- 07
Saw cutting
Cut early to control where the slab relieves. Every slab moves; the cuts determine where.
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Request a quote
Granny Flat Slabs across Sydney
Based in Seven Hills and working across all of Sydney. Quotes are itemised and hold for 60 days. Viliami will contact you directly.
Prefer to speak with someone?
Call 0448 035 058