Engineering sustainable outcomes through empowering our people and building enduring relationships.


Be easy to deal with, be responsive


In everything we do


Be friendly and make time for others


Be true to our word


One team, one company


Enjoying what we do drives great outcomes

Employee Value



  • Flexibility
  • Collaborative workstations with sit to stand desks
  • Annual flu shots
  • Friendly and comfortable environment
  • Inclusive workmates from diverse backgrounds
  • Social functions (with partners & employee only)
  • Annual family fun day
  • Working from home
  • Access to mental healthcare professionals
  • Multiple breakout areas
  • Modern kitchen & bathrooms
  • End of trip facilities
  • Fruit & biscuits
  • Recreational games & sports


  • Projects with Tier 1 land developers
  • Innovative & creative projects
  • Hardworking, high achieving environment
  • Sustainability & environmental initiatives
  • Collaborative, supportive and sharing culture
  • Well regarded brand
  • Bespoke project management software


  • Competitive salaries
  • Acknowledgement of staff achievements
  • Shareholder opportunities
  • Morning teas to celebrate milestones
  • Company apparel
  • Paid study leave
  • Paid professional membership
  • Support for professional accreditation
  • Novated vehicle leasing


  • Comprehensive graduate program
  • Mentoring from Directors & Associates
  • Advancement within the Firm
  • Industry committee representation
  • Rotation through different project teams
  • Cultural Awareness Training
  • Presenting and attending
  • Hosted industry events

Our History

Established in 1989, Cossill & Webley are one of the most well-respected civil engineering firms in Australia.

With the first office in Perth, Cossill & Webley has established itself as the go-to civil engineering firm for urban, infrastructure, and energy developments across Western Australia.

Cossill & Webley has led a number of landmark, award-winning projects across the state, including Ellenbrook, Alkimos, and Brighton.

In 2016, Cossill & Webley expanded its operations by opening an office in Melbourne, Victoria, which has since become a cornerstone of the organisation.

Cossill & Webley’s newest office is in Geelong, Victoria. The strategic growth of the Victorian sector supports the expanding land development opportunities in order to deliver exceptional results for clients in this dynamic region.

Led by directors Ray Todd, Troy Boekeman, Mark Wallis, Avril Thomson, Nathan Butson, and Brock Jeffery-Monck the Cossill & Webley team remains dedicated to delivering innovative, sustainable, and award-winning projects to their clients in multi-disciplinary projects.

Cossill & Webley History Timeline


Cossill & Webley Founded

Our Perth office was established in 1989 and has grown to become one of the most well-respected civil engineering firms in Australia

Ray Todd joins the team

Our most experienced director, Ray Todd, joins the Cossill & Webley team.

Avril Thomson joins the team

Director Avril Thompson, who specialises in infrastructure and urban development, joins the team.

Troy Boekeman joins the team

Director Troy Boekeman joins Cossill & Webley specialising in geotechnical engineering and land development.

Mark Wallis joins the team

Director Mark Wallis who specialises in managing projects from design through construction, joins the team.

Landmark awards for Ellenbrook

One of our most substantial projects, Ellenbrook, wins the inaugural UDIA ‘Sustainability Urban Development Award’.

Brighton wins Water Sensitive Urban Development award

The Brighton development in Butler wins UDIA award ‘Water Sensitive Urban Development’ attributed to C&W’s key part in the development and procurement of the ‘third pipe’. This third pipe scheme supplies properties in Brighton with non-drinking water to irrigate their lawn and garden. Third pipe schemes save drinking water supplies by using other water sources for irrigation.

Nathan Butson joins the team

Director Nathan Butson joins the Cossill & Webley team, specialising in urban development and project management.

Melbourne office opens

Identifying substantial opportunity to expand, the Melbourne office of Cossill & Webley was opened in 2016 on St Kilda Road.

Platinum Worksafe achievement

Cossill & Webley prioritise safety first and foremost so were honoured to be recognised with a Platinum Worksafe Plan Certificate of Achievement. Platinum Certificates are for those organisations that achieve highest standards across safety and health management.

ETS division established

Recognising the growth and demand in the area, Cossill & Webley established their Energy Transformation Services (ETS) division in order to better service the requirements of their clients.

Geelong branch opens

Cossill & Webley expands its Victorian division to Geelong in the vibrant Pakington Street office.

Our people

Although it can be a cliche, our team at Cossill & Webley truly are our greatest asset.

With more than 60 staff in our Perth office and over 30 in Melbourne working on urban development and infrastructure projects, we offer large and diverse teams in both locations. This provides a level of depth in project experience and technical capability that is rarely seen in other civil engineering firms.

Having three locations also facilitates collaboration across projects and support of other teams as required for projects.

With all of our clients, our directors take a hands-on approach in leading the projects to ensure that they are delivered to the highest quality.

Our team has vast experience in all types of development projects both large and small and includes residential, commercial, resort and waterway developments, shopping centres, car parks, boating facilities, beach access, sporting and recreational facilities.

Through this experience, our team have developed an in-depth understanding of development procedures and the responsibilities of project team members particularly town planners, landscape architects, architects, surveyors and environmental scientists. This ensures effective integration of CW’s inputs to the collaborative approach to the implementation of projects.

Our Track Record

We take a great deal of pride in delivering exceptionally well planned and executed projects, on time and on budget, to our clients.

Our experience in leading a diverse range of urban development projects has resulted in Cossill & Webley receiving dozens of state and national awards. But awards are not what we measure success by – the happiness of our clients is.

Projects inevitably hit hurdles, delays and budget deviations along the way, but with the guiding hand of our leadership team and relationships developed in the industry we successfully navigate these challenges.

View our projects