GC Civil are specialists in the Noise Wall & Retaining Wall industry, with an experienced team of designers, engineers, project managers and tradesman, coupled with modern plant & equipment resources, to efficiently complete your project.

Located in Wollongong, we service the Illawarra, Sydney and Western Sydney, the South Coast, Southern Highlands and the ACT. GC Civil also service Brisbane, South East Queensland and Victoria. 

We specialise in the construction of:

  • Noise walls / Sound Barriers / Acoustic Fencing (all types – concrete, AAC Hebel, lightweight concrete, plywood, transparent acrylic), 
  • Retaining Walls (all types – block, concrete sleeper, stone, timber), 
  • Civil Works / Subdivisions, 
  • Stormwater Drainage / On Site Detention (OSD) Structures, 
  • Bridges – vehicular & pedestrian, 
  • Structural Concrete Works – box culvert base slabs, headwalls, access ways, footpaths, etc, 
  • Hand Railing / Balustrading, 
  • Fencing  (all types), 
  • Brick Paving/Landscaping/Turfing/ Streetscaping, 
  • Landscape Structures / Boardwalks. 
Noise Walls

Our specialty is noise mitigation. We design and build Noise Walls, Acoustic Fences, Sound Barriers and Estate Fencing.                                                                                                                              

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Retaining Walls

Common types of retaining walls that we offer are block, coppers log, precast concrete panel (typically at the base of a noise wall), crib, rock/boulder, sandstone log.

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Civil Projects

Our projects go beyond noise barrier walls and retaining walls. GC Civil has expertise in structural concrete, drainage, bridges, land/streetscaping, fencing and design work. 

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About Us

For over 40 years, one family has worked hard to contribute to the improvement of australia's urban landscape environment...

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From the Blog

Current News

Did you know Noise Barrier Walls are one of the most widely recognised form of noise mitigation? They are particularly useful in urban a...


  • Noise Walls
  • Retaining Walls
  • Civil Projects

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