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. 

Led by directors  Ray Todd, Troy Boekeman, Mark Wallis, Avril Thomson and Nathan Butson, the Cossill & Webley team are rapidly expanding their footprint in the Melbourne market in the same way they did in Perth: by delivering innovative, sustainable and award-winning projects to their clients 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.

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 two 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

Our Company Values

Across our team and all of the projects that we work on there are a number of core values that guide what we do:

  1. Relationships-first

    Both internally and externally, we take the time to prioritise building relationships with everyone involved in the project. This isn’t lip-service, rather we see it as foundational to understanding the perspective and value of each and every stakeholder. When challenges arise, strong relationships both with a project and in the industry at-large enable Cossill & Webley to ride the wave.

  2. Long-term thinking

    Civil engineering at its core is about long-term planning, whether the application is urban development, infrastructure or energy transformation. With each and every one of our projects we take the time to look at the bigger picture in terms of the social, environmental and economic impact for the client and community more broadly.

  3. Leadership

    We see leadership as not being the ‘boss’ in a project, but rather being a problem solver to facilitate solutions and effective delivery. Leaning on our strong stakeholder relationships we go above and beyond to ensure that all parties involved can do their job effectively and that budgets and deadlines are adhered to.

  4. Innovation

    With the unmatched technical expertise of the team, we are constantly looking for creative solutions to complex engineering problems that will last the test of time. We don’t use technology for the sake of it, but are constantly looking to integrate innovative solutions across planning and delivery to benefit both the client and the community.

  5. Sustainability

    With a long-term focus comes the need to ensure that all of our projects are as sustainable as possible. Beyond the economic benefits of delivering sustainable projects, we understand the position we have in shaping the environment and take that responsibility very seriously. Taking a sustainable and environmentally focused approach is at the core of everything we do.