Our Philosophy

Responsive - We seek to anticipate our client’s needs. Reliable - We do what we say we will do. Results - We are proud and passionate to deliver beyond our clients expectations.


If we had a dollar for every time we’d been yelled at by the cleaners for tracking mud and dirt into the office, we wouldn’t have to work anymore. But we still would because it might be dirty work trudging through marshes and the like to find the best ways to turn them into usable land, but we love doing it.

Our engineering can sometimes be viewed as humanity concurring nature but this couldn’t be further from the truth in our Civil team. We work with nature, rather than against it, to engineer the best solutions for you. We’re confident that our experience will convince you that turning your concept into reality is only a phone call away.

  • Ovals and Oval Redevelopments
  • Drainage upgrade works for local authorities
  • Bulk and Fine Earthworks Designs
  • Roads
  • Footpath design
  • Car Park Design
  • Traffic Management Devices
  • Hydraulic design of water, sewer and drainage to AS3500
  • Wastewater treatment plants
  • Drainage investigation, design and implementation
  • Drainage catchment investigations and reports on improving drainage
  • Drainage for paved areas including car parks and office developments
  • Water Corporation Main Drainage works

Click below for Project Profiles
Hydrological Study
Cohuna Solar Farm


The home of the cohesive team, there are no closed doors in our corner of the office. We collaborate on our projects from the ground up, from junior drafters and graduate engineers up to the commercial manager. And we don’t stop there, because the most important person we collaborate with is you, our client. Our team recognises that together we are far greater than the sum of our parts.

We value opportunities to get involved on a project early on during concept and schematic stages and we love having the opportunity to carry our projects through to the design and contract administration stages. Have a look through some of the exciting projects that we’ve been lucky enough to contribute to and then give us a call so we can get started turning your concept into reality.

  • Community
  • Infrastructure
  • Industrial and Mining
  • Heritage
  • Commercial
  • Temporary Works
  • Inspections and Assessments
  • Residential
  • Innovation, Research, and Development

Click below for Project Profiles

Forrestfield Airport Link
Snowy 2.0
Matagarup Bridge
Port Gregory Wind Farm
Port Hedland Wet Salt Dump Bridge


If we’re not explaining how something works then we’re probably not talking. We live and breathe our work so you’re just as likely to find us playing with a miniature 3D model of one of our designs as you are to find us bent over a calculation pad.

Our multi-skilled team of thinkers has a wealth of experience in areas such as designing and verifying tanks, pressure vessels and pipes and providing detailed design and drafting for the manufacture of mechanical equipment including materials and mineral processing, earthmoving equipment and ancillary equipment. Check out some of our projects for more exciting details then get in touch and let us turn your concept into reality.

Transport Stands/Boxes

      • Specialised Frames, Stands and Boxes for component and part transport
      • Complying with Commonwealth Load Restraint Guide, National Transport Commission and client specifications

Access Systems

      • Access stairs, ladders and walkways/platforms to fixed and mobile plant
      • Complying with AS1657-2013 “Fixed platforms, walkways, stairways and ladders – Design, construction and installation”, AS 3868-1991 “Earth-moving machinery – Design guide for access systems” and customer specifications

Workshop equipment

      • Adjustable workshop stands, trestles, tooling and jigs
      • Engineered for specific working conditions in accordance with relevant Australian Standards and client specifications


      • Wheel loader and excavator custom bucket design, bucket resizing to specified capacity
      • On and off highway service trucks and water carts complying with Australian Design Rules (ADR)
      • MudMaster© specialised vehicle design
      • ROPS cab design

Pressure Vessels

      • Design and drafting
      • Design verification for registration with government authorities (eg WorkSafe, Comcare)
      • Use of Australian and Internatinoal Standards (eg AS1210, ASME VIII, PD5500, AD2000, EN286.1, EN13445)

Pressure Piping

      • Design and Design Verification of Pressure Piping

Storage Tanks

      • Design and drafting to API650, API620, AS1692
      • Agitated tanks

Gas Cylinders

      • Design verification for registration with government authorities (eg WorkSafe, Comcare)
      • Use of various standards (eg AS2030, DOT specifications, ISO9809, EN1975)

Click below for Project Profiles

Kwinana Power Station


We might rock up to work in a collared shirt and freshly pressed pants but we’re the team that’s likely to have soil samples on our desks next to your drawings. The trusty steel caps are never far away so when you need us on site we’re straight out the door, ready to get dirty.

Our team has extensive experience in tricky soil types, especially around the Perth Hills: clay; rock; sand – you name it, we’ve done it. 2 lot subdivision? 200 lot subdivision? No problem, we’ll tackle any size and any place. Check out a few of our projects (if you need some convincing) then give us a call so we can turn your concept into reality.

      • Bulk and Fine Earthworks design
      • On site effluent disposal investigations to AS1547
      • Design and documentation of sewerage pumping stations
      • Road design
      • Water and Sewer Reticulation to Water Corporation Standards
      • Traffic Management Devices
      • Hydraulic design of water, sewer and drainage to AS3500
      • Design on clay soils and difficult steep terrain throughout the hills and foothills of Perth
        along the Darling Scarp
      • Drainage designs for Land Development
      • Design and construction of devices to improve the quality of stormwater outflows in sensitive areas
      • Stormwater control and drainage designs for quarries
      • Urban Water Management Plans (UWMP)
      • Local Water Management Strategies (LWMS)

Click below for Project Profiles

Balwyn Caversham Estate
Helena Valley


Truly outstanding project managers exhibit collaborative leadership skills like negotiation, evaluation, agility and strategy every day. They know how to keep the project moving and team morale high; they know where they want to go, are aligned with their customer’s strategic vision, and are committed to moving their team forward collaboratively to a successful outcome.

McDowall Affleck has a track record of successful project management bringing together the specialist knowledge of engineers, surveyors, planners, builders, civil construction and financial advisers as required.

Recent projects have included Land Development, Community Consultation, Industrial Development, Commercial Structures and Redevelopment of older areas.

We have particular skills in developing solutions for difficult sites and conditions, through the application of in-house skills and bringing together the appropriate people.


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McDowall Affleck are proud of our ongoing working relationships with likeminded clients. Clients who understand and value the way we are able to deliver a timely, quality product as a cost effective solution to their engineering requirements.

See below for a non-comprehensive list of some valued clients that we have had the pleasure of working with, and some that we currently work with:


For any questions or enquiries please fill out the form below, if you would prefer to call us,
we would love to hear from you.