CivilCommercialDefenceResidential

Retaining walls that get certified.

Crib block, Keystone, Keymass, gabion and precast systems, designed, supplied and built by our own crews across Sydney and NSW since 1977.

Keymass precast block retaining wall built by UCBC
Keymass wallMachine-placed precast
Head contractors and developers we have built forJohn HollandRichard Crookes ConstructionsStocklandHansen YunckenADCO ConstructionsGoodmanFDC Construction & FitoutAustralandARTCWatpac

Ten wall systems. One contractor.

We do not sell one system. We recommend the wall the ground, the height and the finish call for, then design, supply, build and certify it.

Concrete crib block retaining wall with planted face

Crib block

Cut and fill batters on civil and subdivision work

Keystone segmental block retaining wall

Keystone

Residential subdivisions and estates

Keymass precast block being placed with an excavator grab

Keymass

Industrial hardstands and yards

Rock-filled gabion basket retaining wall

Gabions

Creek and channel banks

Concrete sleeper retaining wall with galvanised steel posts

Concrete sleeper

Property boundaries and side setbacks

Allan Block segmental retaining wall

Allan Block

Residential and landscape walls

RSS precast concrete retaining wall units

RSS precast

Civil and infrastructure retaining

1977Founded by Nick Bouhoutsos. Second generation today.
4,800Largest single wall on the project list, Erskine Park.
2Defence establishments carrying our walls.
10Wall systems designed, supplied and built.

Built for the sector, not just the site.

Precast retaining wall units being placed on a civil site

Civil and infrastructure

3 documented projects

The sector the company grew up in.

Precast retaining wall at a commercial site

Commercial and industrial

7 documented projects

Distribution centres at Eastern Creek and Erskine Park, a rehabilitation hospital at Ryde, a fit-out contractor's own facility at Warriewood, a grammar school at Dee Why.

Retaining wall construction on a Defence establishment

Defence estate

2 documented projects

Two of our larger walls stand on Defence estates: 1,600 square metres at HMAS Harman in Canberra for John Holland, and 1,600 square metres at Blamey Barracks, the Army Recruit Training Centre at Kapooka, for Richard Crookes Constructions.

Keystone retaining wall on a residential estate

Residential estates and homes

4 documented projects

Staged estate walls for Stockland at Glenmore Ridge and Lakewood, low walls around social housing at Macquarie Fields, Narwee and Blackett for Watpac, and a charcoal Keystone wall at Prestons for Burton Contractors.

4,000 square metres beside a live freight line.

Outside Sefton station on the Southern Sydney Freight Line, we combined Keystone and crib block walls along the corridor for ARTC, programmed to rail possessions and certified stage by stage.

Concrete crib block retaining wall
Large precast retaining wall on an industrial site

CSR facility, Erskine Park

TRN Group · 4,800 m²

Erskine Park is one of western Sydney's major industrial estates.

Crib block retaining wall on a Defence establishment

HMAS Harman, Canberra

John Holland · 1,600 m²

HMAS Harman is a Royal Australian Navy establishment on the outskirts of Canberra.

Keystone estate wall on a residential subdivision

Stockland Glenmore Ridge

Burton Contractors · 2,200 m²

Glenmore Ridge is a Stockland residential estate at Glenmore Park, below the Blue Mountains.

Keystone retaining wall at a health campus

Royal Rehabilitation Centre, Ryde

ADCO Constructions · 1,200 m²

The Royal Rehabilitation Centre at Ryde is a specialist health campus.

How a wall gets from drawing to certificate.

Design

From the ground up

We price from the drawings and the geotechnical report, recommend a system, and design the section, drainage and reinforcement for the site and the surcharge.

Build

Our own crews and plant

Supply, base preparation, placement and backfill by the people who do it every day, with an excavator and block grab where the site allows machine placement.

Certify

Inspected as it rises

Hold points recorded, materials certified, and the engineer's certificate handed over with the wall, so nothing is chased afterwards.

Send the drawings.
We will price the wall.

Height, length, what sits above it and the ground if you know it. We recommend a system, price it and programme it in one pass.

(02) 9344 9168
UCBC retaining wall site