

Core-filled besser block and masonry retaining walls in Gordon — engineered, steel reinforced and rendered to finish.
Fencing and Landscaping Experts provide block retaining walls throughout Gordon, NSW 2072, in Ku-ring-gai Council's area on the Upper North Shore. The ground here is reactive clay that moves seasonally, so footings are sized for clay that swells and shrinks through the seasons, which is what pushes undersized posts out of plumb. For block retaining walls in Gordon, walls are core-filled reinforced masonry on a reinforced footing. Per square metre of wall face, after a free site inspection. Licensed in NSW, insured to $20 million. Phone 0492 879 796.
Our block retaining walls service means core-filled reinforced masonry — besser block laid on a reinforced footing, vertical steel through the cores and the cores filled solid, built right across Gordon 2072. Gordon's mix of freestanding homes and strata townhouses means a lot of fencing here is shared-boundary work needing sign-off from an owners corporation as well as the neighbour.
A block wall is a reinforced concrete structure with a masonry formwork. Starter bars are cast into the footing, vertical reinforcement runs up through the cores, and the cores are filled in lifts — skip any of that and you have a stack of blocks, not a retaining wall. Block walls handle the sustained lateral pressure of wet Upper North Shore clay better than timber, which is why they are the usual recommendation once a wall goes past about a metre here. Most Gordon properties have good vehicle access, though long side runs past mature trees still mean a fair amount of hand-carrying.
Gordon sits in Ku-ring-gai Council's area, and the ground here is clay ridge soils near the highway grading into sandstone on the eastern slopes. With established homes on level to gently sloping blocks, with unit and townhouse stock near the station, that shapes what works and what does not — which is why every Gordon quote follows a free on-site measure rather than a price off a screen.
Call 0492 879 796 for a free on-site measure and a fixed written quote.
| Service | Block Retaining Walls |
|---|---|
| Suburb | Gordon, NSW 2072 |
| Local government area | Ku-ring-gai Council |
| Region | Upper North Shore |
| Ground conditions | Reactive clay that moves seasonally |
| Recommended specification | Core-filled reinforced besser block, rendered or clad |
| Construction | Core-filled reinforced masonry on a reinforced footing |
| Council approval | Engineering and consent generally required over 600mm |
| Quoting basis | Per square metre of wall face, after a free site inspection |
| Licensing | NSW contractor licence, $20 million public liability |

Block wall with a fence or balustrade above, designed and built as one structure.
Higher structural walls where a Gordon block has been cut into the slope.
Core-filled 190mm besser block on a reinforced footing, the workhorse structural wall.
Certified design for walls over 900mm, near boundaries, or carrying a driveway.
Sand and cement render, bagged or trowelled, painted in your chosen colour.
A structural block core faced in sandstone, brick or stack stone.
We work across Gordon and the surrounding Upper North Shore suburbs, and the local conditions genuinely change the job. The Upper North Shore is Sydney's leafiest fencing environment. Large blocks, mature canopy and Ku-ring-gai and Hornsby's tree-protection controls mean post holes frequently land inside a tree protection zone, and heritage conservation areas set the tone for what a front fence is allowed to look like.
For block retaining walls specifically, the constraints that come up most often in Gordon are tree protection zones, heritage conservation area controls and sloping sandstone-over-shale blocks. Ku-ring-gai Council is the consent authority for Gordon, so where approval is needed that is the path we work through with you — and we identify that before quoting rather than halfway through the job.
Yes, substantially. A core-filled reinforced block wall is a reinforced concrete structure and can be engineered for heights and loads that timber and standard concrete sleeper systems cannot reach. In Gordon that matters most where the wall is carrying a driveway, a structure or a steep bank above it.
Anything over the 600mm exempt threshold, close to a boundary, or supporting a surcharge such as a driveway or building will generally need engineering and approval from Ku-ring-gai Council, and that is effectively always the case above 900mm. We arrange the design and certification as part of the job so you are not chasing an engineer separately. Low garden walls under 600mm generally need neither.
Most Gordon block walls are rendered and painted, which is durable and cost effective. Bagging gives a more textured, informal finish. Where the wall is prominent, cladding in sandstone or stack stone over the structural block gives a stone appearance with reinforced concrete strength behind it.
40 years and well beyond with correct drainage and adequate cover to the reinforcement. The failures we see on Gordon block walls are drainage failures, not concrete failures — water building up behind a wall that had no working ag line. Weep holes and a subsoil drain behind the wall are as important as the steel in it.
Yes, and that is often why it is chosen. Blocks can be carried in by hand and laid in spaces that a sleeper or stone wall could never be built in — a real advantage on tight Gordon sites where machinery cannot reach the wall line.
All of Gordon 2072, plus the surrounding streets in Pymble, Killara, East Killara and St Ives. Gordon is characterised by established homes on level to gently sloping blocks, with unit and townhouse stock near the station, and we schedule around what that means on the ground rather than booking a standard slot. We give you a firm start date with the quote rather than an open-ended window.
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Wentworthville NSW 2145
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