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Suite 4.02, 17 Macquarie Street

Parramatta NSW 2150






(02) 4721 1955



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Inhouse Consulting Engineers have proudly serviced Sydney for over 35 years

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Structural Engineers – Western Sydney

Inhouse Consulting Engineers are professional engineering consultants based in greater Western Sydney specialising in structural engineering services to the building and land development industries.


We service an extensive range of clients including homeowners, builders, architects, local councils, building and land developers and landscape architects. From structural, stormwater to civil engineering and designs services, our Sydney team will ensure your building project is a success from start to finish.


With over 35 years experience, we can thoroughly check your site for any potential problems and ensure you’re protected against any issues in the foreseeable future. We offer comprehensive structural inspections right across Sydney, the Blue Mountains, Newcastle and Wollongong on all building projects, delivering peace of mind every step of the way.


At Inhouse Consulting Engineers, we go above and beyond to ensure your experience with us is of the highest standard. We strive to provide a friendly, approachable and informative service that is unsurpassed in the industry – covering every aspect of the build to ensure you are comfortable with the entire process.




The company was first established in Penrith in July 1988 as Roger E Dohnt & Associates. To learn more about our heritage, please read on here.



Role of a structural engineer


A structural engineer will work with the project manager, architect / designer, fire, mechanical and hydraulic engineers to make sure designs accommodate other services and comply with the National Construction 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 and National Construction Code and are always aware of the latest developments 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 dedicated to creating structures that are functional and engineered to stand the test of time.


A structural engineer has to be precise, from roof structure 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 may seem trivial but it is such precision that ensures the structure stands firm and is future proof.


Inhouse Consulting Engineers has been operating for over 35 years, providing structural engineering for residential, commercial and industrial buildings across Sydney since 1988. 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.

Civil design & civil engineering services – Western Sydney

As leading engineering consultants in Sydney, we specialise in civil structures for a range of land development projects. We strive to provide expedient solutions across many different areas including structural inspections for residential housing in Sydney, investigation of building problems, dilapidation surveys, insurance reporting and pre-purchase structural appraisals.


We are proud to deliver reputable engineering services in Sydney that is efficient, reliable and professional.


As leaders in our field, we can provide valuable direction and advice on all construction projects including footings and raft slabs, reinforced concrete slabs, beams and columns, timber framing and posts, swimming pools and retaining walls. Our goal is to always ensure your project runs smoothly from start to finish, while minimising your construction costs wherever possible.


We offer fixed price quotations and clearly specify documentation requirements so you can rest easy knowing there are no hidden surprises keeping your project on time and on budget.


If you would like to discuss your project with our team of experienced civil and structural engineers, please call Inhouse Consulting Engineers today o+61288013131.

How we work


Once your architect or building designer has drawn or your plans, the job of a structural engineer is to make sure the structure is adequate and meets any safety requirements and all relevant building codes and standards.


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


We coordinate our work with architects, building designers and hydraulic engineers to ensure that the footing design is calculated to ensure that storm water drainage designs meet council requirements and does not present a risk to your home or commercial structure.


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 specify 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 of experienced civil and structural engineers at Inhouse Consulting Engineers are always available to talk you through our drawings and reports to give you confidence every step of the way.


Our best 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 ones which stay hidden for years to come. They remain in place until the structure itself is removed, upgraded and transformed into something even better.



Areas where we service


Inhouse Consulting Engineers offers our civil and structural engineering consulting services to the greater Sydney area, Newcastle, Wollongong, Central Coast and the Blue Mountains.


As we are highly sort after for our specialised structural design for bridges, culverts, and community infrastructure, we routinely service all parts of NSW and QLD and Victoria.


We look forward to hearing from you soon.