Sustainable engineering and design

Local expertise, regional impact

Award-winning community infrastructure

Structural and civil engineering services

Creating sustainable environmental solutions

Integrating communities through planning and design

Sensitive design and engineering

Inviting public realms and streetscapes

Who we are

Tonkin is a leading provider of engineering, environmental and consulting services to private and public organisations. We design intelligent solutions for the buildings, structures, environment, sustainability, public works, transport, urban development and water sectors. Our clients include commercial and residential developers, construction firms, councils and government departments.
Lake Hawdon North Regulator, SA

Lake Hawdon North Regulator, SA
Environment & Sustainability Water Environmental Consulting and Compliance Environmental Impact Assessment and Approvals Natural Resource Management South Australia
Goolwa Wharf, SA

Goolwa Wharf, SA
Buildings & Structures Public Works Building Structures Maritime, Ports and Coastal Environments South Australia
The Sanctuary Church, QLD

The Sanctuary Church, QLD
Buildings & Structures Building Structures Environmental Consulting and Compliance Transport Planning Queensland
Broken Hill Town Square, NSW

Broken Hill Town Square, NSW
Public Works Stormwater and Flood Management New South Wales
Twentyfirst Street Bridge, SA

Twentyfirst Street Bridge, SA
Buildings & Structures Environmental Impact Assessment and Approvals Infrastructure Planning Stormwater and Flood Management Transport Planning Transport Structures South Australia
MS Wellbeing Society, NSW

MS Wellbeing Society, NSW
Buildings & Structures Building Structures Stormwater and Flood Management New South Wales
Lansdown Gardens Aged Care Residence, NSW

Lansdown Gardens Aged Care Residence, NSW
Buildings & Structures Building Structures Environmental Consulting and Compliance New South Wales
Flinders Chase National Park Visitor Centre, SA

Flinders Chase National Park Visitor Centre, SA
Buildings & Structures Building Structures Road and Highway Design Stormwater and Flood Management Traffic Engineering South Australia
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Markets

Locally experienced, nationally connected

Tonkin thrives on solving complex problems and finding innovative ways to exceed the expectations of our clients, providing lasting value for communities.

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Buildings & Structures

Buildings & Structures

 Environment & Sustainability

Environment & Sustainability

 Public Works

Public Works

 Transport

Transport

 Urban Development

Urban Development

 Water

Water

Latest News

Meet our Structural Engineers in Sydney

Tonkin's Sydney office is home to the company's largest cohort of structural engineers. Our structural engineers in Sydney specialise in a variety of building structures, including aged care and retirement facilities, multistorey residential, retail, aquatic centres, education buildings, health facilities, industrial, warehouses and storage faculties.

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Meet Tonkin's East Coast Water Team

Water engineering is where Tonkin made our name. For decades, Tonkin has been a leader in water engineering, particularly in South Australia where our business was founded more than 70 years ago. More recently, we have expanded to Queensland and New South Wales, where we now have dedicated water teams. Our water engineers in Brisbane and Sydney work collaboratively for clients across Australia’s east coast providing a full range of water engineering services.

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