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216 Great Western Highway

Kingswood NSW 2747


PO Box 752 Kingswood NSW 2747



(02) 4721 0044



(02) 4721 1955



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We are Professional Engineering Consultants in Western Sydney.

The company has successfully traded for over twenty years.

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Inhouse Consulting Engineers Pty Ltd is a professional engineering practice specialising in structural engineering services to the building and land development industries in Greater Sydney and Blue Mountains Areas. We work with homeowners, builders, architects, local councils, building and land developers, landscape architects. We cover a broad range of all structural, stormwater and civil engineering designs for large and small projects. 


We are people too and we understand how great it feels to be treated nicely, so we aim to treat you that way too. We strive to provide friendly understanding service to our clients. There is a lot to know and it may be bit new and overwhelming. We are happy to take the time to understand where you are and what you need and talk to you in a way that makes sense. We listen and look out for your best interests, using our experience to foresee possible roadblocks and complications ahead of their impact all the while always keeping an eye out for ways for our designs to minimise your construction costs when possible.




The company has been trading as Roger E Dohnt & Associates Pty Ltd since 1989.  For three years prior to this, Roger Dohnt was the manager and principal structural engineer of Morgan Talbot & Associates, a long established consulting engineering firm in Penrith... read more 



Role of a structural engineer


A structural engineer will work with the project manager, architect, fire, mechanical and hydraulic engineers to make sure designs accommodate other services and comply with building code and Australian Standards. This guarantees that your build will be function, suitable and structurally sound and that you receive structural engineer certificates for the premises.


Our structural engineers are always up to date with the Australian Standards codes and always aware of the latest trends and which materials are best for the relevant job.


As industry leaders, our structural engineers can assess a build or building site and then directly apply solutions to any potential problems. We are thorough and are dedicated to creating structures that are future-proof and stand the test of time.


A structural engineer has to be accurate, even down to the structure of the concrete slab and foundations. Every detail is calculated from the bolts to the thickness of a concrete slab. These details to you and I may seem minute but it is such precision that ensures the structure stands firm and is future proof.


Inhouse Consulting Engineers has been operating for over 30 years, providing structural engineering for houses Sydney based since 1986. As experts in the industry, we understand the importance of the relationship between home owner and structural engineer. Whether you are designing the new build of your dreams or just need to solve the cause of the cracking in your structure, we offer a transparent and friendly relationship so you have complete control, awareness and understanding of what is going on with your project.


How we work


Once you have had your architect draw or indicate how your structure will physically look, the job of a structural engineer is to make sure the structure is adequate and meets any safety requirements and building codes.


Our structural engineer will factor in conditions like the weather and site conditions, along with other load requirements, to guarantee your structure will be sturdy and stand firm, minimising risks of cracking or moving.


We communicate with architects and stormwater engineers so the structural engineers footings design is calculated to ensure stormwater drains are suitable to council infrastructure and not affect your building.


After considering these factors, our structural engineer will then detail, draft and create designs indicating the correct measurement of your buildings structure. For example, they will determine the right thickness of concrete and steel reinforcement and the correct size of posts and structure of the beams for the framing of the foundations. They are capable of fine tuning the slightest detail from the design of a bolt or a weld to ensure all the structural elements for harmonious and the structure will match your needs and requirements.


Our team at Inhouse Consulting Engineers are always available to go through our drawings and reports in detail with you so you are aware of everything that is happening.


Our proudest work usually ends up buried beneath the ground, brick-clad or covered in concrete but we don’t mind. The best and most successful designs are the one which stay hidden for years to come. They remain in place until the structure itself is removed, upgraded and transformed into something even better.


Why work with us


We look forward to partnering with you to bring your design ideas to life.


Following are a few of our beliefs in why we think you will make the right decision in choosing Inhouse Consulting Engineers as your structural engineer for your job.

  • Friendly - we believe in creating a relationship with our clients that is mutually beneficial and enjoyable
  • Reliable – you can count on our services to deliver you quality
  • Individual – we appreciate every build or project is unique and we act accordingly
  • At your level – we understand many of our clients only build one house or renovate once, so we take the extra time to explain our services and are happy to help you understand other steps alone the way. We don’t try and alienate you with complex engineer language, rather we are by your side throughout the entire process to make sure you understand what is going on
  • Transparent – there are no hidden costs or conditions as we operate clearly and openly
  • Deadline – we appreciate many builds are time sensitive and we always work to meet a deadline
  • Insured – we are fully insured with all the necessary insurance coverage, including public liability, workers compensation and professional indemnity insurance
  • Certificate of Structural Adequacy – Your building or pool structure will meet all regulations

Areas where we service


Inhouse Consulting Engineers offers our structural engineering consulting services to the greater Sydney area from the east to the west, north and south and up into the Blue Mountains region.

We look forward to hearing from you soon.