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The advantages of using one Residential Engineer for your construction project

March 29, 2022

Most new home construction projects require a combination of residential engineering disciplines, such as structural, hydraulic, and foundation engineering, as well as soil testing. However, each of these are often thought of as separate, unrelated services. In some cases, there are aspects of a build that people don’t even realise require engineering.

Whether you’re renovating, extending, or building a brand new home, there are almost always significant benefits to (a) understanding the full range of engineering services you might need, and (b) where possible, getting the same engineer to provide these services. After all, you wouldn’t use two different baristas; one to roast and grind your coffee, and another to brew your morning fix.

Here are some common scenarios that we regularly hear about: 

  • Need a retaining wall? It’s tempting to think of your project as “the house”, but what about the retaining wall for the back fence/property line? You’ll still need a soil test, so if the soil tester is aware of the retaining wall up front, the expense for any required additional boreholes is much less than an extra site visit.
  • Putting in a swimming pool? If a pool is on the cards, advance consideration of both foundation and hydraulic engineering design can avoid costly re-excavations etc, later on.
  • Will your house be over 8.5 metres high? So the customer’s dream home is taller than regulation, and you’ve been told you need a different wind assessment. This involves a site visit, but so did the earlier soil test. Wouldn’t it have been better to kill two birds with one stone?
  • My local council has unique requirements for plumbing. Your builder or plumbing contractor may handle this, but to avoid compliance or performance issues down the track, order the sanitary waste hydraulics design at the same time as the soil test and footings/slab design. It also makes for a more efficient onsite build.
  • I want to have an open plan feel to my new house/extension or renovation, with large opening windows and doors. Both single storey and double storey frames need to be carefully engineered to accommodate large windows and doors. Supporting columns may impact your slab in terms of point loads, so structural and foundation engineering should be jointly considered from the outset to avoid significant unforeseen cost overruns, or a poorly functioning building.

Whether you’re a builder, developer, architect or owner, these examples beg the larger question. Can engineering services be provided more holistically and efficiently? 

But every residential construction project is different; unique in some way. Even with standard floor plans, there may be significant variation in construction due to soil, wind, location, regulations etc. This means each project will have different needs for engineering services. 

So you’ll need an engineering provider with the size and range to see the bigger picture, and cover all the possibilities.

Residential engineering covers a range of home construction needs
Most new home building projects require several residential engineering services: from the soil test and foundation design, to structural and hydraulic engineering. And there are several benefits to using the same engineer for all of these services.

Thinking about your residential engineering project needs in advance

Our approach at STA is to be a one-stop engineer with fully integrated services and deep understanding of residential construction. Communication is everything to us. That’s why we prefer to have a comprehensive discussion of your individual project needs in advance. We can then offer you a bundled package of all the services required for your project, bringing a host of benefits. 


Time and money — Pre-planning your engineering needs means you won’t have to keep re-booking, or re-looking, for an engineer when you need a particular service. It creates efficiencies that cut service times and save you money by pulling together the services you’ll need, at a lower overall price.

Engineering continuity — Having all the engineering done by a single organisation means a deeper knowledge of the site and the project, producing high quality outcomes, with more opportunity for innovative solutions.

Risk and reliability — While STA always takes legal responsibility for its engineering designs, an up-front engineering services package means deeper trust from a greater mutual commitment, and lower risk of interruption or delay.

How it works

1. We help you think upfront how your project can run more smoothly in engineering terms, and what specific services you might need. 

2. A plan is developed that packages together the correct engineering services required for the individual circumstances relevant to your project.

3. You don’t pay up front for all of them, but the engineering services are pre-scheduled. The schedule may change, but overall it means we work more closely with you over the life of the project. We’re both “on the same page”.

“Planning ahead with one company for all the required engineering services is certainly an attractive idea. It can help create a more cooperative problem-solving mindset, ending the ‘blame game’ where one consultant claims a problem is due to what another consultant did, or didn’t do, earlier.” Courtesy of a builder we interviewed for this article

Explore our engineering services

STA has a team of experts in every engineering specialty for residential construction. They’ll help see you through every phase of the job, and by discussing a comprehensive engineering services package up front, you’ll quickly get to the heart of the full costings and project schedule. 

Here are a few tips on taking fuller advantage of our services. You can also click on the following links for more info:

  • Soil testing — This is a must-do on every building project, so it makes sense to lock in the Foundation Design at the same time and ensure you stay on schedule.
  • Foundation engineering — As soon as you know the site classification, have us work on the most cost effective footing and slab design, ensuring point loads can be accommodated in the right locations before construction.
  • Structural engineering — If you will need a wind classification, bundle it with structural design so the same engineers solve any problems detected.
  • Hydraulic engineering — We know Sanitary Drainage Design is affected by the Foundation Design, so coordinate these two for better outcomes on H, E or P class sites
  • Building inspection services — To ensure what is constructed is exactly as the engineers specified, match up the stages of inspection with the engineering design services you’ve scheduled. It’ll make the certification processes smoother, and assist with any unforeseen site construction issues as they present. 
  • Geotechnical engineering services — If your site has significant slope or groundwater issues, it pays to book a geotechnical assessment with the same engineer as for the soil testing.

Talk to STA for efficient up-front planning

Call STA on (07) 3071 7444 (QLD) or (02) 4032 6450 (NSW) to discuss your engineering needs in advance of your next project, or send us an enquiry and we’ll get back to you within 24 hours.

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