About Us

Cossill & Webley are one of Australia’s most respected engineering consultancies, delivering award-winning projects for over 35 years.

About Us

An award-winning engineering consultancy

Cossill & Webley has grown to become one of Australia’s most well-respected engineering consultancies, delivering sustainable, innovative solutions across urban development, infrastructure and energy transformation - creating award-winning projects and communities that stand the test of time. With offices in Perth, Melbourne and Geelong, our commitment to sustainable outcomes and community-focused design sets us apart.
Who We Are
Our Story

A legacy of engineering excellence

Founded in Perth in 1989, Cossill & Webley has grown to become one of Australia’s most trusted civil engineering consultancies. With offices in Perth, Melbourne and Geelong, we deliver projects that shape communities and stand the test of time.

Our Track Record
A legacy of engineering excellence

Why Choose Cossill & Webley

35+ Years Experience

Decades of proven expertise in civil engineering.

Sustainable Focus

Committed to environmentally responsible solutions.

Client Partnership

Building lasting relationships with our clients.

National Reach

Offices in Perth, Melbourne and Geelong.
Our People

We're always thinking about the bigger picture

With over 100 staff nationally, our teams deliver urban development, infrastructure and energy transformation projects with exceptional depth and technical expertise. This scale and diversity of experience set us apart in the urban development industry.

Our Team
We're always thinking about the bigger picture

Our Accreditations

Cossill & Webley is proud to hold industry-leading accreditations that reflect our commitment to quality, safety and engineering excellence.
Logo
Logo
Logo
Logo
Logo
Logo