Doolan Co

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Civil, plumbing and maintenance solutions across NSW. Safety. Quality. Compliance. Trusted to deliver

16/10/2026

Doolan Co is proud to be delivering underground infrastructure works on NEXTDC’s S4 Sydney data centre at Horsley Park, working as a subcontractor to Multiplex.

Our civil scope includes critical below-ground infrastructure, requiring careful sequencing, coordination with surrounding trades and a strong focus on safety, quality and compliance throughout delivery.

Projects of this scale demand capability both on the ground and behind the scenes, from planning and plant to people and ex*****on.

Another significant Western Sydney project our team is proud to be part of.

Doolan Co. Trusted to deliver.

14/10/2026

Our team joined the Build Your Future – Women in Infrastructure Careers Day, and we're proud of how Doolan Co showed up.

One of our own, Kateila took a seat on the panel and represented the business brilliantly, handling every question with confidence. Alongside her, our team ran the Doolan Co stand, talking with people exploring a career in infrastructure.

The next generation of NSW infrastructure will be built by people who can see themselves in it. Thanks to the organisers and our fellow panellists for a great day.

Where culture meets capability.

09/10/2026

Our team is utilising vacuum trucks at the Penrith Stadium Development, ensuring efficient and safe removal of waste materials.

The redevelopment of Penrith Stadium is proudly funded by the NSW Government.

07/10/2026

Every operator on our crews started somewhere.

Doolan Co puts apprentices through real work on real sites, with the tickets, the mentoring and the supervision that go with it. It's how the business builds the crews it will need in five years.

Where culture meets capability.

05/10/2026

Koori knockout 2026

02/10/2026

Family runs a little deeper here. 💛

From fathers and sons to brothers working side by side, some of the strongest connections at Doolan Co go well beyond the job site.

There might be a bit of friendly competition and the occasional disagreement, but at the end of the day, it’s about looking after each other and getting the job done.

Good people. Strong families. One team.

Where culture meets capability.

25/09/2026

Not every job needs a 50-tonne excavator.

Doolan Maintenance keeps facilities, sites and assets running minor civil works, compliance repairs and planned maintenance, delivered with the same standards we bring to major projects. Right plant, right crew, right result.

18/09/2026

From behind the wheel to keeping the fleet moving.

Johnny joined Doolan Co 12 months ago as a driver and has since stepped into an allocator role; coordinating trucks, solving problems and helping keep the day running smoothly.

One of his proudest moments so far? Helping get the Hawkesbury City Council contract up and running and delivering those first weeks successfully.

After 20 years running his own business, the change has also brought something just as important, more balance, more time with family and a strong team around him.

Different personalities, one team.

That’s the culture we’re proud to keep building at Doolan Co.

16/09/2026

Car park restoration complete for Sydney Water at their Liverpool site.

Our maintenance and civil crews rebuilt and resurfaced the pavement inside a tight programme, and reinstated the surrounds on completion.

Solid effort from the crew on this one.

Aerial photography supplied by Sydney Water

Safety. Quality. Compliance. Every project, every time.

Address

Auburn, NSW

Website

https://doolanco.au/

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