Cooke & Dowsett is a national commercial and industrial plumbing business with a Western Australian office based in Malaga. The company services the construction industry across a wide range of sectors, including accommodation, commercial, defence, education, health, infrastructure, retail, sports and leisure. With a history dating back to 1992, Cooke & Dowsett has built a strong reputation for delivering professional plumbing services on major construction projects across Australia and New Zealand. The business specialises in commercial plumbing, design and construction, hydraulic systems, gas services, fire services, civil drainage, prefabrication and project management of plumbing services.
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Mako Plumbing is a locally owned and operated plumbing business based in Karratha, Western Australia, providing plumbing and gas services across the Pilbara, Kimberley and Gascoyne regions. The company delivers solutions across the domestic, commercial, construction, government and resource sectors, supporting projects ranging from routine maintenance through to large-scale infrastructure and mining works. With a strong focus on quality workmanship, safety and responsive service, Mako Plumbing has established a reputation for delivering innovative plumbing solutions tailored to the unique challenges of regional Western Australia. The company is supported by a team of qualified and licensed tradespeople who provide professional plumbing, gas fitting and maintenance services throughout the North West.
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Xspurt Water Solutions is a locally owned and operated plumbing business based in Port Hedland, delivering professional residential, commercial and industrial plumbing services throughout the Pilbara. With more than 20 years of industry experience, the business has built a reputation for dependable workmanship, exceptional customer service and practical plumbing solutions suited to the region's demanding conditions. Specialising in advanced leak detection, blocked drains, water filtration systems, water softeners, trenchless pipe repairs and emergency plumbing, Xspurt Water Solutions combines modern technology with experienced licensed plumbers to deliver efficient, long-lasting results. As a Water Corporation Waterwise Certified business and proud MPGA member, the company is committed to sustainable water management, quality workmanship and maintaining the highest standards of professionalism and compliance.
Mallard Contracting is a leading Western Australian contracting, construction and maintenance company specialising in the mining, resources, industrial and government sectors. Proudly 100% Aboriginal-owned, the company delivers turnkey solutions across construction, maintenance and infrastructure projects throughout regional and remote Western Australia. With more than 30 years of combined industry experience, Mallard Contracting has built a reputation for delivering safe, high-quality and cost-effective project outcomes across a broad range of disciplines. Operating from bases in Perth, Karratha and Carnarvon, Mallard Contracting provides in-house trade expertise across plumbing, gas fitting, electrical, carpentry, civil construction and maintenance services. The business is recognised for its strong safety culture, Aboriginal employment initiatives and ability to deliver projects on time and on budget in some of Western Australia’s most challenging environments.
Streamline Plumbing is a leading Western Australian hydraulic services contractor specialising in commercial, industrial and civil plumbing solutions. Established in 1998, the company delivers expert services across water, sewer, drainage, gas, fire and mechanical systems for projects throughout WA. Based in Malaga, Streamline Plumbing works across sectors including healthcare, education, government, retail, multi-residential and infrastructure developments. With more than 25 years of experience, the company has built a reputation for technical expertise, quality workmanship and delivering reliable hydraulic solutions on complex projects.
VTPG (VT Plumbing Group) is a Perth-based commercial plumbing and maintenance contractor delivering plumbing, gas and hydraulic services across commercial, construction, government and residential sectors. Founded by Jake Veaudry and Steven Tompsett, the business has grown into a well-established team of more than 40 staff, including experienced project managers, licensed tradespeople and apprentices. Training, development and staff retention remain key focuses of the business. VTPG specialises in commercial plumbing construction, building maintenance, gas services, drainage, fire services, backflow prevention and hydraulic infrastructure projects, while also providing reactive maintenance and residential plumbing support. Known for its professionalism, efficiency and strong safety culture, VTPG combines modern project management systems, quality workmanship and a customer-focused approach to deliver reliable plumbing solutions across Perth. With extensive industry experience, a growing apprentice workforce and a commitment to continuous improvement, VTPG has built a reputation for delivering high-quality outcomes across both service and project work.
IFM Group is a Naval Base-based industrial plumbing, civil, building and maintenance business servicing commercial, industrial, mining, processing and project-based clients across Perth and Western Australia. The business provides practical trade support across industrial plumbing, maintenance, civil works, mechanical services, electrical works, shutdown services and building solutions. As a Master Plumbers member business, IFM Group is positioned within the Western Australian plumbing and maintenance industry as a professional provider supporting industrial facilities, commercial operations, mining-related sites and processing environments with reliable trade services, maintenance capability and project support.
We are an established, independent business with a proven record of delivering specialised solutions throughout Western Australia for over 45 years. With our highly skilled team, modern fleet and award-winning projects showcased state-wide, we are dedicated to providing exceptional service and value to our clients. We are family owned and operated and our reputation is built on forming strong relationships, working collaboratively to achieve unique and cost-effective results whilst maintaining the highest quality and safety standards. We offer a wealth of industry expertise and our well-recognised capabilities add value to projects from concept through to completion. The agility we are known for facilitates innovative turnkey solutions that overcome unique project challenges, saving time and providing value for money. Our client base is diverse and includes private businesses and public utilities in the resources, Defence, Commercial, Retail, Health and Community infrastructure sectors. We strive to deliver every project successfully as a trusted, reliable partner, whether we are leading as Head Contractor or supporting Australia’s most renowned Contractors.
Doc Hayward’s Plumbing & Gas Service is a Mount Lawley-based plumbing and gas fitting business servicing residential and local property clients across Perth and surrounding metropolitan areas. The business provides practical plumbing and gas support with a focus on reliable workmanship, professional service and local trade experience. Doc Hayward’s Plumbing & Gas Service is positioned within the Western Australian plumbing industry as a professional provider supporting homeowners and property owners with plumbing, gas fitting, repairs, maintenance and general service work.
AJL Plumbing & Gas is a family owned and operated plumbing and gas fitting business based in Midvale, Western Australia. Led by Alan and Jamie, the company brings more than 30 years of experience in the plumbing and gas industry, providing prompt service and quality workmanship for residential and commercial clients.
Plumbing coordination for large construction projects
On a large building site, plumbing is one part of an interconnected construction program. Water, drainage, hot water, gas, roof drainage and other hydraulic services need to align with the building design, access requirements and the work of multiple disciplines before finishes close up the spaces around them.
Large projects can involve multi-level commercial buildings, shopping centres, schools, hospitals, aged care facilities, hotels, apartment complexes, recreation centres, industrial facilities, warehouses, civic buildings and larger mixed-use developments. The practical challenge is not simply installing pipework: it is coordinating routes, risers, penetrations, plant-room space, access points and testing requirements within the wider building services network.
For builders, developers, project managers and design teams, an early, well-informed conversation with a commercial plumbing contractor can make it easier to identify the project information, staging requirements and specialist interfaces that need attention.
What can be involved in commercial construction plumbing large projects
The plumbing scope for large projects varies with the building and its design. It may involve extensive water reticulation, sanitary drainage, trade waste, stormwater, roof drainage, hot water plant, gas services, pumps, tanks, backflow, fire hydraulic interfaces, risers, plant rooms, civil drainage connections, temporary services, staged commissioning and handover documentation.
These systems often need to be considered as connected parts of the construction outcome. A change in one area, such as a plant room, ceiling space or service penetration, can affect routes, clearances, access or coordination elsewhere.
- Water and sanitary systems: multi-level distribution and drainage arrangements can require careful routing and coordination.
- Risers and plant rooms: hydraulic risers, commercial hot water plant, circulation and associated equipment need to work within the allocated building spaces.
- Drainage: stormwater, roof drainage, trade waste, pre-treatment and civil drainage connections may form distinct but related work areas.
- Services and protection: gas services, appliance connections, pumps, pressure systems, backflow containment and fire service pipework interfaces may be part of the overall scope.
- Completion activities: testing, commissioning, defects and handover packages can be important milestones near project completion.
Why project coordination matters
Commercial plumbing projects commonly bring plumbers into contact with hydraulic consultants, builders, project managers, fire contractors, mechanical contractors, electrical contractors, certifiers and multiple approval pathways. Construction programs may also set the sequence for set-out, rough-in, fit-off, testing and handover.
Coordination drawings and approved shop drawings can help clarify pipe routes, ceiling coordination, penetrations, fire collars, access panels, isolation valves, commissioning points and maintenance access before the building is finished. These details are useful because they connect the plumbing work to structural, civil, mechanical, electrical, fire and architectural requirements.
Preparing to approach a commercial plumbing contractor
A large project conversation is more productive when the project team can outline both the intended plumbing scope and the conditions around it. The following information may be useful when choosing a plumbing business through Find a Master Plumber.
- Identify the project and contacts. Provide the site address, contact person and relevant consultant contacts.
- Bring together the project documents. Architectural, structural, civil, hydraulic, fire and mechanical drawings, specifications and approved shop drawings can help establish the design intent.
- Explain the program and staging. Share the builder program, staging requirements, project milestones and any commissioning requirements.
- Flag site conditions. Include access instructions, induction requirements, parking or loading details, permitted working hours and any relevant site controls.
- Note approvals and changes. Authority approvals, variation pathways, a penetrations register, fixture schedules and plant schedules can help clarify responsibilities and decisions.
- Set out completion expectations. Discuss testing, commissioning, defects and handover documentation requirements as part of the wider project planning.
Questions worth asking about large projects
Large construction plumbing calls for a conversation that is specific to the site and program. Asking focused questions can help a project team compare the relevance of different plumbing businesses without assuming that every business offers the same services.
- How will the proposed plumbing scope connect with the current drawings and specifications?
- Which plumbing systems, interfaces and project stages need to be clarified first?
- What information is needed for service coordination and approved shop drawings?
- How should plant-room access, risers, penetrations and maintenance access be considered in the project information?
- What testing, commissioning, defects and handover documentation is expected for the project?
- Who are the key contacts for hydraulic, fire, mechanical, electrical, civil and architectural coordination?
Products and supply channels customers may encounter
Project documents, schedules and procurement discussions may refer to a range of product systems and supply channels. Examples customers may encounter include Reece, Galvins, Galvin Engineering, Tradelink, Parkwood Plumbing Centre, Caroma, Geberit, Kembla, Rheem, Rinnai, Thermann, Viega and B Press.
These names can be useful reference points when checking drawings, fixture schedules, plant schedules or nominated products. Their appearance in project information does not by itself determine what a plumbing business will supply, install or service, so the relevant requirements should be discussed against the project documentation.
Finding a Master Plumber for project work
Find a Master Plumber connects customers with Master Plumbers and plumbing businesses associated with the Master Plumbers and Gasfitters Association of Western Australia. It is backed by the Association, which has represented Western Australia’s plumbing and gasfitting industry since 1901.
Choosing a Master Plumber helps consumers make a more informed choice of plumbing business for a property or project. For a large construction project, use the project documents and questions above to have a clear discussion about the work being considered.
Related commercial construction plumbing
Some projects have a more specific construction focus. Depending on the documented scope, it may be useful to explore forward in-ground works, roof plumbing, storm water, small to medium projects, Tier 1 projects, mine site plumbing or remote work plumbing.
Frequently asked questions
What is meant by large projects in commercial construction plumbing?
Large projects generally relate to larger buildings or sites, including multi-level commercial buildings, shopping centres, schools, hospitals, hotels, apartment complexes, industrial facilities, warehouses, civic buildings and larger mixed-use developments.
What plumbing systems might form part of a large project?
The scope may include water reticulation, sanitary drainage, trade waste, stormwater, roof drainage, hot water plant, gas services, pumps, tanks, backflow, fire hydraulic interfaces, risers, plant rooms and civil drainage connections.
Why are coordination drawings important?
They can help resolve pipe routes, risers, penetrations, access panels, plant-room clearances, ceiling coordination, commissioning points and maintenance access before the building is finished.
What should be provided when discussing a large project with a plumbing business?
Useful information can include drawings, specifications, the builder program, staging requirements, consultant contacts, approved shop drawings, service coordination drawings, schedules, approvals, shutdown requirements, commissioning requirements and variation pathways.
Who may need to coordinate on a commercial plumbing project?
Coordination may involve hydraulic consultants, builders, project managers, fire contractors, mechanical contractors, electrical contractors, certifiers and other project parties.
Can Find a Master Plumber help with choosing a plumbing business?
Yes. Find a Master Plumber connects customers with Master Plumbers and plumbing businesses associated with Master Plumbers WA, helping customers make a more informed choice for a property or project.