The partners of Callaghan and Toth Consulting Engineers have maintained a presence in Noosa since 1980;  sixteen years being with a previous engineering practice and consequently have extensive local knowledge, particularly of Sunshine Coast & Cooloola Coast and Toowoomba Region Infrastructure.

Callaghan and Toth staff consist of three experienced engineers (Civil and Enironmental) with one graduate engineer, two design technicians and administration staff.


Callaghan and Toth service the South East Queensland area. We offer a full range of engineering services focusing on quality engineering practice, adding value for our clients and timely delivery of projects.

Water Supply and Sewage
Callaghan and Toth provide a full range of water and sewerage services including design of gravity and low pressure sewer systems to existing suburbs reticulation/pump station design to new developments.

Urban and Rural Development
UW Private Development Assessment and construction certification. Full engineering design and construction supervision services can be provided for both rural and urban developments.

Main Roads Design
Planning and design of intersections or roundabouts to Main Roads standards.

Stormwater Drainage
Callaghan and Toth have the skills to undertake planning studies and drainage network analysis including detention basins.

Environmental Services
Callaghan and Toth provide a complete Stormwater Quality Management design service incorporating water quality modelling and detail design of stormwater quality systems.
We also have the skills to undertake Environmental Management Plans and Revegetation Plans.


Local Government /Utilites

  • Provide integrated and minimal impact gravity solutions for utilities Sewerage Systems to existing communites operations
  • Augmentation of Existing Water Reticulation Systems
  • Design of Carparks, Roads, Streetscapes and Intersections
  • Design and Civil works to community buildings
  • Design of Stormwater Drainage improvements
  • Design of Stormwater Quality Improvement Devices

Land Development

  • From ‘Green field’ subdivision design to existing urban/rural driveway design, and streetscapes
  • Revegetation and Clearing Plans and Approvals
  • Intergrated Water Management Plans
  • Provide cost estimates and Project Management

Building Services
We provide detailed Hydraulic Design for commercial buildings, shops, restaurants and units and have experience with trade waste design to industry and water re-use.

We undertake structural design, associated with our civil projects.

Staff Profiles

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