Business Details
35 Years
experience
Trusted Engineering Solutions for Residential & Commercial Projects
Established in 1991, STA Consulting Engineers has built a reputation as a trusted leader in residential and commercial engineering across Queensland and New South Wales. Our family-owned business combines decades of experience with a commitment to innovation, delivering tailored solutions for soil testing, foundation design, structural engineering, and compliance inspections. With our own NATA-accredited laboratory, we ensure rapid, accurate results that underpin every project we undertake. Our collaborative approach prioritises client needs, supported by a team of seasoned professionals dedicated to excellence.Over 30 years, we've refined our processes to guarantee reliability, clear communication, and consistent quality. As industry pioneers, we leverage millions of data points to offer smarter design insights and end-to-end support from pre-design advice to final inspections. Our focus remains on sustainable growth, technological advancement, and fostering long-term partnerships through exceptional service.
Services
Soil Testing
Foundation Design
Structural Engineering
Hydraulic Engineering
Building Inspections
Geotechnical Engineering
Wind Classification
Salinity Soil Test
Bushfire Assessment
Retaining Wall Design
Details
- Year established: 1991
Highlights and features
- Over 30 years of experience in residential and commercial engineering
- Own NATA accredited laboratory for accurate soil testing
- Completed over half a million projects nationwide
- 24/7 support and direct access to technical consultants
- Streamlined processes with guaranteed on-time delivery
Associations and certifications
- NATA
What people say
Outstanding service
Efficient and consistent delivery
Impeccable relationship management
Accommodating and helpful
Best in the business
Services
Soil Testing
Our NATA-accredited laboratory delivers precise soil testing and site classification services critical for construction success. We analyse soil reactivity, salinity, and stability to determine appropriate foundation designs. Our regional soil profiles and 30+ years of data ensure accurate, site-specific recommendations for residential and commercial projects.
Foundation Design
Specialists in custom foundation solutions tailored to soil conditions and building requirements. We design waffle rafts, monolithic slabs, and screw pile systems for reactive soils. Our engineers ensure compliance with AS2870 standards while optimising cost-efficiency and structural integrity across Queensland and New South Wales.
Structural Engineering
Comprehensive structural design services covering residential and light commercial projects. Our team specialises in floor, wall, and roof framing systems, as well as steel and timber structures. We provide detailed documentation and on-site inspections to guarantee compliance with Australian Standards and client specifications.
Hydraulic Engineering
Custom hydraulic design services addressing stormwater, sanitary drainage, and sustainable water management. We assess site flows and pressures to create efficient systems compliant with local council requirements. Our solutions integrate seamlessly with foundation and structural designs for cohesive project outcomes.
Geotechnical Engineering
Expert geotechnical assessments for complex sites including slope stability and fill evaluations. We conduct detailed investigations to identify potential risks and recommend mitigation strategies. Our services support informed decision-making for challenging terrain and large-scale developments across eastern Australia.
People
Grant Rosbrook
General Manager
With over 20 years at STA, Grant leads strategic operations after completing an MBA and achieving Chartered Professional Engineer status. He focuses on continuous improvement and quality assurance while maintaining client relationships.
Nigel Wilson
Engineering Manager
A civil engineering graduate with 30+ years' experience, Nigel specialises in diverse structural projects including luxury residences and historical renovations. He ensures cost-effective, compliant solutions for commercial and residential developments.
Nathan Franklin
Operations Manager Field
With nearly two decades at STA, Nathan oversees field operations including drilling and inspections. He established regional offices in Mackay, Townsville, and New Zealand before returning to Brisbane to lead field services.
Brenton Rosbrook
Operations Manager Design
Brenton manages structural and foundation design teams with a focus on client service. He progressed from designer to leadership roles, prioritising quality delivery and team development while maintaining technical expertise.
Mayoo Mayooran
Inspections Manager
A structural engineering PhD holder, Mayoo leads inspection services ensuring compliance and quality. He balances technical excellence with commercial outcomes, driving continuous improvement in STA's inspection processes and reporting standards.
Questions
What engineering services do you offer?
We provide soil testing, foundation design, structural engineering, hydraulic systems, geotechnical assessments, and building inspections for residential and commercial projects.
How do I request a quote?
Contact us via phone or our online form with project details. We'll provide a service proposal within a week, often faster for urgent requests.
Are your soil tests NATA accredited?
Yes, our in-house NATA-accredited laboratory ensures accurate, reliable soil testing and classification results for all projects.
Do you work outside Queensland?
We service all East Coast regions including NSW, with regional teams operating from Bundaberg to Bermagui.
What's included in foundation design?
Our designs incorporate site-specific soil data, wind classifications, and structural requirements to create cost-effective, compliant foundation solutions.
How quickly are reports delivered?
Soil test reports typically take 10 days, with expedited options available. Inspection reports are delivered within 72 hours of site visits.
Reviews (6)
Ken Spalding
Jan 26, 2022
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Positive:Professionalism,Quality,Responsiveness,Value
Very happy with the service provided during our build with Coral Homes.
Very happy with the service provided during our build with Coral Homes.
John Riggs
Nov 22, 2021
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Sounds great , but the project is still stopped, and we are still not working together but against each other. I understand your are angry and so am I, so let's talk and work it out for both of our sakes. A simple phone call could have and still can get the project unstopped. We beg to disagree on some key points but at the end of the day we still do not have what we need, and genuinely believe we have been overbilled. Re the credit card fees, that is not so important, but I will say this your invoice does not mention them, or warn of them like we do for our customers. We we rushed that payment
Alessandro Tavian
Jul 28, 2021
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Positive:Professionalism
The Team at STA very good at delivering customer service, replying to emails, attention to our questions, concerns and requests. We are happy with all aspects of service to date with our project at kalinga and would recommend them to everyone. Cheers
The Team at STA very good at delivering customer service, replying to emails, attention to our questions, concerns and requests. We are happy with all aspects of service to date with our project at kalinga and would recommend them to everyone. Cheers
Belinda Bairstow
Jun 06, 2021
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The experience has been nothing but painful. Didn’t deliver on time and provided incorrect certification of their design. Don’t respond to emails or phone calls in a timely manner. This has been doing in since December 2020
Paul Tidmarsh
Mar 23, 2021
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BEWARE USING THESE GUYS .... I have used this company for the last 10 or so years for soil tests prior to starting a build. Every time in the past I have had 3 bore holes done,
This time they said that "due to the size of the home, we need to drill extra bore holes at a cost of approx. $150.00."
I had to meet the driller to give him access, he mentioned to me that they have started doing only 2 holes because they are so busy, and charging for the 3rd. ??? That story is different to what I was told. I agreed and the report was sent to me, after me having to chase it up and being told that this
This time they said that "due to the size of the home, we need to drill extra bore holes at a cost of approx. $150.00."
I had to meet the driller to give him access, he mentioned to me that they have started doing only 2 holes because they are so busy, and charging for the 3rd. ??? That story is different to what I was told. I agreed and the report was sent to me, after me having to chase it up and being told that this
Eliza Mcleash
Sep 30, 2018
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Alex Mon from Signature Realty on the Gold Coast strikes again trying to hide behind the "Cameron Cotton" disguise. What a vindictive disgusting human being. You seem to have a problem Alex Mon with the amount of reviews you have done when your bullying tactics don't work. You are rude and arrogant with your dealings with people so it is not surprising you don't get what you want when you try and demand it.
