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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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The company has successfully traded for over twenty years.

About Your Consulting Engineers in Western Sydney

The company started trading as Roger E Dohnt & Associates Pty Ltd in July 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.
In 1994 it was decided to change the name of the practice to Inhouse Consulting Engineers Pty Ltd.  This was designed to form a new trading name that reflected our business plan, and to improve the delegation of clients to our other senior engineers and thereby improve the standard of service to our clients.
In 1998, the directors made a deliberate change in the direction of the company and downsized the practice to just two people operating from a home office.
Then in 2010, exceptional growth in the company's workload required extra staff and expansion into new, much larger office premises in the commercial area of Kingswood.
We have continued working towards building the business with a great team of experienced staff.
We have a team of 2 Senior Engineers, 1 Junior Engineer, 1 Stormwater Designer and 1 experienced Design Draftsperson along with our great secretarial, admin and book keeping staff.
Roger Dohnt - Principle/Senior Engineer
[Dip.Tech.(Eng)NSWIT(1980), B.Eng, NSWIT(1984), MIE Aust, CPEng, NPER-3 Civil & Structural, Reg. No. 61807,   B.AdultEd, UWS (2000)] 
Roger Dohnt has over 25 years experience in both public and private sector consulting engineering offices and started his own practice in 1985. In this time he has gained wide experience in almost all types of structural design extending throughout the greater Sydney area, adjacent shires and country areas. With a strong personal faith, he will continue the company's services for many years.
The company has successfully traded for over twenty years under the current management and is proud to note the following distinguished clients amongst its broad base of architects, builders, etc
  • Incoll Management Pty Ltd                  
  • Landcom                                     
  • University of Western Sydney 
  • Penrith City Council                    
  • Australand Holdings                             
  • Delphin Lend Lease
  • Norwest Land
  • Penrith Lakes Development Corporation
  • The Hills Shire Council
  • A.R.F. Industries
  • Dept. of Housing                                  
  • J. Wyndham Prince                             
  • Dept. of Defence                                  
  • Anglican Church of Aust.          
Inhouse Consulting Engineers Pty Ltd operates a professional office in Kingswood.  Over and above the usual office furniture and fittings of a consulting engineering office, we have recent model PC's, multifunction laser printer/scanner and A0 lazer digital plan printer and scanner. Administrative computer software consists of Microsoft Office Professional, BillQuick and MYOB.  Structural design software consists of TEDDDS, S-Frame & P-Frame.
All drafting is carried out using AutoCad software.  The company have four‑wheel drive vehicles for access to difficult sites.  We have basic tools for soil sampling and testing for foundations (hand auger, hand and dynamic cone penetrometer).  Soil samples taken from site can be tested for specific parameters at a local independent NATA registered soil laboratory as required.
We also have a laser levelling station and accessories that we primarily use for measuring deflections in structural elements. Other specialised testing equipment is accessible for hire as necessary.