Local team
Melbourne based, family run and operated
Local teamHigh quality fleetCompany established 2012Free on-site quotesFamily run and operated5 star serviceLocal teamHigh quality fleetCompany established 2012Free on-site quotesFamily run and operated5 star service
Local teamHigh quality fleetCompany established 2012Free on-site quotesFamily run and operated5 star service
Retaining walls Wollert
Wollert sits on notably stony ground, on undulating land that produces exactly the kind of level differences retaining walls exist to hold. It is also growing fast: about 24,400 residents at the 2021 Census, and roughly 37,000 by the ABS estimate for 2025. Kosta & Sons build retaining walls across Wollert, out of our yard in Tullamarine.
Retaining Wall Builders on the Wollert Stony Rises
Wollert's bedrock is Newer Volcanics basalt, olivine basalt with minor scoria and thin interbedded sand, clay and tuff, sitting over Silurian shales and mudstones. What makes Wollert different from the flatter parts of the corridor is the stony rises: they are named features in the area's own structure plan, as stony rises and stony knolls, and they are exactly what they sound like.
The heritage study of the district describes the stony rises as angular, sometimes blocky, volcanic rock scattered across the ground, over outcrops that are horizontally fractured and platey. That is why the old dry stone walls around Bindts Road, O'Herns Road, Craigieburn Road and Lehmanns Road are built from stone that came straight off the surface, and why some of them use unusually massive stone.
For a wall footing it means loose rock in the clay and fractured rock underneath. Neither stops the job. Both change how long the trench takes, which is why we come and look before putting a number on it.
The Fall That Creates the Wall
Wollert is not flat. The council-approved development plan for a site on Bindts Road records half the land falling five to ten per cent from south west to north east, and another forty per cent falling nought to five per cent. A five to ten per cent fall is roughly one in twenty to one in ten.
That is the range that reliably produces a step at the boundary once lots are cut level for a slab. The same approved plan says the intent is to minimise cut and fill, retaining walls and batter slopes as far as possible, and then shows retaining walls and split level house designs in its own cross sections. That is the honest picture: the design tries to avoid walls and the ground puts them back.
That is enough fall to change how a block is built on, which is why retaining shows up so early in the design here.
Estates, and What to Watch For
Most of our Wollert work sits in the estates: Aurora, which started in 2005 across 630 hectares spanning Epping and Wollert, plus Lyndarum North, Wollert Rise and the approved plan off Bindts Road. On the approved Bindts Road plan, conventional lots run about 300 to 566 square metres and medium density lots 160 to 300, so a lot of these walls are being built in tight spaces.
Two things here are genuinely specific to Wollert and worth knowing before anybody puts a machine in the ground.
The first is recycled water. Every home in Aurora is plumbed with Class A recycled water through a third pipe from a local treatment plant. That is an extra service line in the ground that does not exist in most suburbs, and it needs locating before you dig.
The second is dry stone walls. Whittlesea's planning scheme protects them. The council says a permit may be needed to remove stones or alter these walls, including on private property, so check with the council before anything is touched. If there is an old stone wall on or near your boundary, it is not just a pile of rock and it should not be treated as one.
Drainage on Wollert Clay
Edgars Creek rises in Wollert and runs seventeen kilometres south to meet the Merri at Coburg North. Curly Sedge Creek, another Merri tributary, runs through the suburb near the Aurora treatment plant. The wider area is described as flat to undulating with a regional slope to the south, and groundwater sits ten to twenty metres down in the basalt aquifer.
None of that helps water get off your block. This clay holds water rather than passing it through, and saturated soil pushes harder on a wall than dry soil does. Water is the part most often left out, and it is the part that does the damage.
So the drainage detail behind a Wollert wall is not optional, and where the fall across a block makes an outlet difficult we raise it before we start.
A Wollert wall usually comes with the rest of the ground work: a site cut to get the lot level, rock removal for the stone, and drainage behind the wall. Our yard is in Tullamarine. See retaining walls across Melbourne.
On ground this stony, footing depth is the part of a quote that varies most. Here is what actually decides how deep the posts go.
Why us
Built to Last in Wollert
We also specialise in rock breaking and retaining walls, ensuring stability for your building construction projects.
- Commercial-grade materials and proper engineering on every wall
- Sleeper, besser block, rock and timber, matched to the ground
- Drainage handled properly behind the wall, not as an afterthought
- Free on-site quote, with a straight answer on what the block needs
High quality fleet
Tipper trucks, mini excavators and specialised earthmoving equipment
Established 2012
Over 13+ years of site preparation and bulk excavation
100% satisfaction
Free quotes across the Melbourne metropolitan area
What else we do
Other Services in Wollert
Rock Removal Melbourne
Kosta & Sons offer expert rock removal Melbourne and rock breaking Melbourne services, delivering safe, efficient results for any project…
Read about rock removal melbournePlumbing Services Melbourne
Kosta & Sons plumbing services Melbourne ensure quick and dependable fixes for all your plumbing needs. Our licensed plumbers provide…
Read about plumbing services melbourneConcrete Removal Melbourne
Kosta & Sons Melbourne concrete removal specialists understand that improper procedures can lead to unnecessary delays, safety risks, and additional…
Read about concrete removal melbourneNearby
Other Suburbs We Cover
Retaining Walls Melbourne
Postcode 3000. Retaining walls built for Melbourne blocks and ground.
Retaining walls in MelbourneRetaining Walls Reservoir
Postcode 3073. Retaining walls built for Reservoir blocks and ground.
Retaining walls in ReservoirRetaining Walls Sunbury
Postcode 3429. Retaining walls built for Sunbury blocks and ground.
Retaining walls in SunburyRetaining walls BroadmeadowsRetaining walls CampbellfieldRetaining walls CoburgRetaining walls CraigieburnRetaining walls EssendonRetaining walls WollertRetaining walls MelbourneRetaining walls ReservoirRetaining walls SunburyRetaining walls TullamarineRetaining walls BroadmeadowsRetaining walls CampbellfieldRetaining walls CoburgRetaining walls CraigieburnRetaining walls EssendonRetaining walls WollertRetaining walls MelbourneRetaining walls ReservoirRetaining walls SunburyRetaining walls Tullamarine
The quality you deserve, and dependability you can count on.
Questions
Retaining Walls Wollert, Answered
Is there much rock in Wollert?
Yes, and it is one of the stonier parts of the northern corridor. The soils on Wollert's stony rises are described as full of rounded and angular stone, over fractured platey basalt. There is a working hard rock basalt quarry inside the suburb, which tells you what the ground is made of. We carry our own breakers and rippers.
There is an old stone wall on my boundary. Can it be moved?
Not without checking first. Whittlesea's planning scheme protects dry stone walls, and the council states that permits are needed to remove stones or alter them in any way, even on private property. Talk to the council before anything is touched. We can build around a protected wall.
Do you work in Aurora and Lyndarum North?
Yes, and in Wollert Rise and the smaller estates off Bindts Road. One thing specific to Aurora: every home there has Class A recycled water plumbed through a third pipe, so there is an extra service in the ground to locate before digging.
Why do so many Wollert blocks need a retaining wall?
Because of the fall. A council-approved plan for a Wollert site recorded half the land falling five to ten per cent, which is roughly one in ten to one in twenty. Once a lot that steep is cut flat for a slab, there is a step at the boundary, and something has to hold it.
Building a retaining wall in Wollert?
Send through the details and Rick will come out, look at the ground, and quote it properly.
Prefer to talk? Call 0456 614 439