AD Consulting Engineers is a small structural engineering consultancy in Sydney that specialises in houses and low-rise buildings. Working closely with architects, builders, and home-owners, we provide the structural engineering for all-new residences, ‘alterations & additions’ projects, home renovations, and so much more.


AD Consulting Engineers was founded to provide a dedicated, specialist structural engineering service to all involved in domestic, residential construction.

We bring 30 years of experience to the table, having worked with Sydney’s leading architects and builders on over two thousand houses in the eastern suburbs, north shore, inner west, and northern beaches areas.

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What Our colleagues say

“I would highly recommend Andrew to anyone seeking a dedicated and talented engineer who consistently delivers cost effective and creative engineering solutions, which are rare and highly sought after by all project stakeholders nowadays.”

Dylan Edwards
Toki Construction

“I’ve enjoyed working with Andrew on a range of architectural projects as he is innovative in resolving complex architecture with suitable structural design options whilst keeping in mind clients’ budgetary concerns.”

Yvonne Haber
Yvonne Haber Architect

“With over 15 years collaborating together on bespoke luxury homes, we have always delivered a structure that has been well considered by Andrew,  well received by our clients and the design team in partnership.”

Rick Simmons
One Up Building

“We have been lucky to have worked with Andrew as our structural engineer for many years. We have always found him to be extremely capable & efficient in his responses and solutions. He is engaged, articulate, calm in a crisis, personable, interested in design and in providing the appropriate response. We always feel supported and really like working with him.”

Andrew Stanic
Stanic Harding Architects

I’ve worked with Andrew Derbidge for over 15 years , on multiple projects. The projects ranged from residential alterations and additions, through to public buildings for local government. 
In every instance Andrew provided concise and considered structural Engineering solutions, that were not only practical, but respected the architectural design intent. When it came to justifying a structural approach to a client or builder, Andrew would often go the extra distance and provide thoughtful and clear explanations. I can highly recommend his services. 

Phil Moore
Melocco & Moore Architects

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