We are Grosvenor Engineering Group

Let our numbers do the talking

Green outline of Australia and New Zealand


across ANZ

website setting icon


Technical assets
under management

people icon



building icons



ANZ Network

We are a trusted building services partner to leading property portfolios across ANZ. We are passionate about delivering outcomes and long-term value for building owners, managers and their occupants.

With a footprint of 21 branches across Australia and New Zealand, our clients are supported by a workforce of over 800 employees which include specialist engineers, technicians, project managers, estimators, site personnel, and service specialists.

Latest News

See our latest company news hot off the press.

We have some great blogs and articles on informative industry topics.
Check them out.


To enrich people’s lives by transforming
the built environment

Safety Logo


We are relentless about ensuring everyone returns home safe and well every day.

Agility Logo


Our data enables us to be curious, proactive and deliver the best outcomes.

Balance Logo


We encourage everyone to find their own ideal balance between work and life.

Partnerships Logo


Diverse backgrounds, thinking and skills, working together, make us a force to be reckoned with.

Our Corporate Social Responsibility

We believe in making a difference and are committed to working and acting in a socially responsible manner towards each other and all those with whom we interact.

We strive to behave ethically at all times, to contribute to economic development while improving the quality of life of our employees and their families as well as our local community and society at large.


Learn more


Learn more


Learn more

Responsible Sourcing

Learn more

Indigenous Inclusion

We are committed to include the Indigenous community with our business activities.

tranby logo

We are proud corporate partners of Tranby National Indigenous Adult Education and Training (Tranby). Tranby, is Australia’s longest running Aboriginal-controlled nationally registered training organisation (RTO), offering units of competency, full VET qualifications, and non-accredited skill development initiatives to Indigenous adults from across Australia.

supply nation logo

Grosvenor are members of Supply Nation. Supply Nation connects Indigenous businesses, along with procurement teams from government and corporate, to help shape the Indigenous business sector. Supplier diversity is a growing movement in Australia and Grosvenor are committed to creating a more inclusive economy.

University of New England logo

We have partnered with UNE to support a student through the GEG Indigenous Scholarship. UNE are committed to access, support and creation of opportunities for those who might not otherwise be able to take advantage of university and higher education. The scholarship has provided the recipient with many opportunities, removing the financial burden that would have been faced otherwise.

Indigenous Employment

We offer an inclusive work environment and encourage Indigenous people to apply for positions within our organisation. Send your CV or apply for vacant positions advertised.


This painting was created for GEG by Zachary Bennett-Brook, an award-winning Indigenous artist. Zac has captured the essence of our culture, values and the foundations GEG are built on into this modern indigenous artwork. 


The large circular section in the middle reflects GEG’s beginnings as a family business based in Sydney.

The outer circles represent six areas of growth for GEG: 1) the growth of the company, 2) the growth in the number of our employees, 3) the growth of our brands, 4) the growth of our offices across ANZ, 5) the growth of our services and 6) the growth of the GEG family.


Our company values have been incorporated: 

Safety – the connectivity throughout the artwork represents how we support each other to stay safe.

Agility  the affinity between traditional use of dots in the artwork and their representation of data embodies GEG’s foundation of Data Driven Solutions.

Balance – the synergy within the artwork reflects balance, something we encourage for all employees.

Partnerships – represented by the connected circles – we value partnerships with our people, clients, suppliers and communities in which we work.

The colours used within the artwork are the GEG brands main Blue and Green with a few little pops of both White and Grey to bring everything together.


Zachary Bennett-Brook was born in Wollongong NSW and is a proud Indigenous man of Torres Strait Islander heritage growing up in Wollongong (Dharawal Country).

Our Commitment to Quality

We have robust systems in place to deliver on the promise. We keep up to date with industries best practice to ensure we are giving you quality outcomes. Our Quality, Safety & Environment Systems, are certified to stringent JAS-ANZ standards.

ISO9001 logo
ISO14001 logo
ISO45001 logo
jas anz logo

Our Executives

Grosvenor Engineering Group Nicholas Lianos Managing Director

Nicholas Lianos

CEO & Managing Director

Grosvenor Engineering Group Peter Souflias Director

Peter Souflias


Grosvenor Engineering Group Steve Gallagher Director

Steven Gallagher


Grosvenor Engineering Group Alex

Alex Petrakis


Grosvenor Engineering Group Graham Hindley General Manager

Graham Hindley

Chief Operating Officer

Our Beginnings

Grosvenor Engineering Group began with three university friends who had studied engineering at the University of New South Wales, two of which are still Owners / Directors today – Nicholas Lianos and Peter Souflias.

Nicholas came across Grosvenor Air Conditioning, a company looking to sell its HVAC maintenance contracts and with his university friends they bought the contracts. In May 1994, the Grosvenor Group of companies began with a team of 13. Today we are a team of 800, with customers spanning across Australia and New Zealand.