Accolade Estate - Ultimate Retarding Basin Contact Us

Rockbank, VIC

Accolade Estate located 35km’s from CBD, in close proximity to Rockbank Train Station is a thriving community housing over 1000 residents. The ultimate retarding basin was awarded to BildGroup to construct simultaneously with the adjoining subdivision civil and landscaping works.

The scope of works included significant excavation and cartage off site of approximate 70,000 cubic metres of clay and rock. In addition to this, we constructed over 400 metres of drainage works including box culverts, along with rock beaching and footpath.

We have worked closely with Melbourne Water and all neighbouring developments to ensure all works are carried out in a manner that eliminates any impact to the surrounding environment.


January 2020


June 2020





  • Bulk Earthworks
  • Drainage Works
  • Culvert Works
  • Rock Beaching
  • Clay Liner
  • Footpath
  • Topsoil
  • Jute Matting


Challenges such as stormwater from large rain events, limited space, heavy rock and a tight timeframe were overcome through strategic planning and resourcing with a combination of BildGroup owned equipment and subcontractors working together.

Upon mobilising, there was significant volumes of over-wet material to be managed before loading offsite. With   adjoining infrastructure works in close proximity, a collaborative approach was critical to the successful delivery of all works ahead of program.

In line with our value of Safety 24/7, BildGroup was able to safely complete the project. Our initiative of minimising people and plant interaction in a confined site using a full crew of GPS machinery had  the added benefit of ensuring all works were finished accurately and efficiently.



  • The challenging area required significant environmental controls. BildGroup worked closely with Melbourne Water to ensure a positive impact on the environment.


  • Rigorous and continual management of stormwater and inlets allowed works to progress through the wettest comparable period in 90 years.


  • Earthworks >70,000m2
  • Drainage & Culverts
  • Rock Beaching >300m2
  • Shared Paths
  • Cart & Dispose >70,000m3
  • New Wetlands
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