DeLosa Design Services is an independent design drafting and engineering service located in Melbourne’s South-Eastern suburbs. For over ten years we have offered experienced and professional drafting and engineering services for companies in need of timely project delivery. We can provide turnkey project designs or support your existing team during peak load periods.

Managing Director Stephen De Losa is disciplined in Mechanical Design drafting and has a career spanning over 35 years primarily in the Process Design sector. Across those years, recognizing the importance of commitment to clients, Stephen has maintained a number of long-time partnerships with both large corporations & small business.


Our practical knowledge covers design and installation services for the Water, Food & Beverage, Pharmaceutical, Manufacturing, Chemical & Building Services sectors. Using this broad range of experience and our capablities across many disciplines we can provide engineering and design drawings for your company’s process, mechanical and structural needs. DeLosa Design uses the Autodesk Building Design Suite for its drafting. This software suite includes the AutoCAD & Revit drafting packages.


Services provided include:

  • Project Management
  • Engineering design calculations
  • 3D & 2D design & detail drafting
  • Skid mounted equipment
  • Process plant, equipment, piping layout
  • Piping details & isometrics
  • Associated Mechanical, Structural and Electrical drafting
  • Development of Process & Instrumentation Diagrams (P&ID) for your plant.

Some of our projects

Skid for Cryoquip

Hygenic valve manifolds

Clients & project partners


Delosa Design also understands the importance of community and supports the work of charitable organisations including Abolishion, Angel Light Link and Operation Hope. Check out these links to see the difference they are making in the world we live in.

Abolishion Angel Light Link Operation Hope

Our location

Contact us

Phone 03 9796 6894

Fax 03 8786 5288

Email webcontact

Postal PO Box 367, Berwick VIC 3806