Chadoak Group
Plumbing & Infrastructure


For over 50 years, Chadoak has built a reputation on a culture of safety, diversity, collaboration, integrity, and collaboration for the success of our clients. As a result, the majority of our work is referral-based.

Founded in Oakleigh in 1974, the Chadoak Group has been owned by brothers Peter and Jim Griffin, who are still "hands-on" today in support of tendering, fleet management and plumbing sector relationships.

We are proud of our industry-leading safety journey and achieving a zero LTIFR milestone for our major projects group in April 2023.

Chadoak provides professional, cost-effective services that cater to every client's needs. Our experienced staff use high-quality products and services to deliver results we are proud of. Often exceeding social procurement, diversity, safety and environmental expectations.








ISO ACCREDITATION - 45001 Safety Management, 9001 Quality, 14001 Environmental


Design & construction, project management and procurement of water, wastewater, drainage, syphonic, retention, pumping, fire and gas for large complex sites across Victoria. Expert design up to 3D, teamed with our construction experts, provides safer, cost-effective total solutions for our clients.


Water, drainage, fire & sewer works with approved Key Personal. Pipe lift and relay, Deep manhole shafts in rock or water. Tunnelling, drilling, boring, major intersections, CBD and rail corridor occupations. 24/7 support across multiple sites. Currently delivering early/final works on multiple Level Crossing Removals (over 25 completed), as well as Airport Rail, Nth East Link, & Westgate/Metro Tunnel sites. We have been working on the tunnel/rail sites from the beginning and are experts in the challenges of problem solving and coordination of the works. We are proud of achieving Nil LITFR safety record across these sites in 2023.


Major and minor: pumps, pipes & manholes, welding, test & commissioning and certification. Sewer & water reticulation. Water & waste water infrastructure. Early works relocation, lift & relay.


Preventative and emergency services 24/7 for water, gas, fire, roofing, assets as well as backflow/TMV device install, maintain & testing. We specialise in Building Compliance Audits for roofing/plumbing. Out team of experts has a reputation developed over decades for safe, cost-effective solutions & fast response times.

Completed & Ongoing

Metro & Westgate Tunnels/Stations

We engage in extensive early tunnel works, with 24/7 support, including the installation of water, sewer, and fire. With multiple station works ongoing, we have been working on the tunnel sites for over 5 years. With over $25m of services delivered to date, we are proud of our team’s efforts and expertise in solving the challenges associated with complex projects of this nature.

Level Crossing Removals

With over 35 stations completed so far, our staff are design & construction experts from start to finish engaging in; early works, prefabrication, coordination of water, sewer and fire services, through to commissioning. We have works ongoing with up to six 24/7 occupancies running at any one time.

Melbourne Water - Yan Yean Pump Station

This ongoing project includes complex fabrication, and welding pipe upgrades to largescale pipework. Chadoak is accredited with all Melbourne & Geelong water authorities as well as a team of approved "key personnel" for specialist works and connection services.

Shepparton Hospital Redevelopment

Builder- BUILT, Project Value $230m - Complex retrofitting and open wards as well as multi story new extension. Also completed Epworth, Wonthaggi Hospitals. Remote location, 3D BIM design. Water, wastewater, trade waste, stormwater, sewer, siphonic drainage.

Mainfreight Facility - Dandenong South

Builder Hacer - Mainfreight Warehouse Dandenong - Project Value $70m. Over 50,000m2 of warehouse with a coolroom, dangerous goods storage and over 26,000 hardstand. A further 4,000m2 of office space and 28,000m2 of external paving. Water, wastewater retention/recycling, multiple pump stations, stormwater, sewer, siphonic drainage.

Greater Shepparton Secondary College

Builder- Hansen Yuncken - Project Value $143m - constructed over just two years, one of Victoria’s most advanced and largest ‘super schools’. With 2,223 children currently enrolled, the college is set to be Victoria’s largest high school campus in a few years, with a 2,700 student capacity. Remote location, 3D BIM design. Water, wastewater, trade waste, stormwater, sewer, syphonic drainage, gas.

Department of Transport

Builder Maben - Ringwood Head Office - Project Value $105m - design & construct 4 levels of car park, 6 levels of office space, ground floor customer service and rooftop sky deck. Water, wastewater, trade stormwater, sewer, siphonic drainage.

Calvary Kooyong Precinct

Builder ICON - Project Value $154m - design & construct new retirement living, aged care, GP and other health services across one site. 3D BIM design. Water, wastewater, trade waste, retention, stormwater, sewer, siphonic drainage.

Spirit of Tasmania Terminal

Builder BMD - Geelong - Project Value $135m - The 12 hectare freight & passenger terminal precinct. Install water, recycled water, stormwater, fire and sewer and pump stations across the site and wharf.

Gary Bennett

Group CEO

Executive leader of the team; sets vision & direction. National and international experience leading water, gas and electrical sectors delivering capital, 24/7 maintenance and emergency services.

Craig Ford

Construction Manager

Extensive leadership experience delivering all aspects of water, sewer and fire services to commercial, government and private projects.

Steve Tamvakis

Financial Controller

Overseeing finance, taxation & budget services for the group with diverse experience across a range of sectors

Peter Griffin

Lead Estimator/Designer

Expert infrastructure/station estimator with extensive knowledge of design and construction options to safety optimise design and construction alternatives

  • 168-188 Wellington Road, Clayton, 3168, VIC
  • PO Box 953, Mt Waverley, 3149

For emergencies after hours call 8562 6666 this number will divert to our on-call staff.