Large Projects

Large commercial construction projects need plumbing work that can be coordinated with drawings, staging, approvals and other building services. When selecting a commercial plumbing contractor, clear project information helps builders, project managers and design teams discuss scope, interfaces and delivery requirements with greater confidence.

69 Master Plumbers found

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Willmott Plumbing

Certified Master Plumber Closed · Opens 7:00am

Willmott Plumbing is a long-established family plumbing and gas fitting business based in Margaret River, servicing the South West region of Western Australia since 1984. The business has built a strong reputation for dependable service, quality workmanship and long-term customer relationships throughout the local community. Specialising in residential plumbing, gas fitting, drainage, hot water systems and general maintenance, Willmott Plumbing provides practical and reliable solutions for homeowners, rural properties and small businesses across the region. As a locally owned and operated business, Willmott Plumbing is known for its personalised service, extensive local knowledge and commitment to delivering professional outcomes tailored to the unique needs of South West properties. With more than four decades of industry experience, the business has become a trusted name in the Margaret River region, recognised for its reliability, workmanship and commitment to supporting the local community.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Construction Plumbing +31 more
Gas Plumbing Contractor Emergencies

APG Plus

Certified Master Plumber Open · 24/7 Service

APG Plus is a South West-based plumbing, gas, electrical and facility maintenance business operating from East Picton and servicing Bunbury, surrounding towns and wider WA. Established in 1991, APG Plus provides residential, commercial and industrial plumbing and gas services, supported by experienced tradespeople, strong customer service and a broad capability across maintenance, construction, repairs and asset management. The business is well suited to homeowners, commercial property owners, builders, facility managers, industrial clients, aged care facilities, health care providers and businesses requiring reliable planned or reactive maintenance. APG Plus’ services include plumbing and drainage, gas fitting, hot water systems, backflow prevention, roof plumbing, drainage, pump stations, fire pump sets, wet fire systems, filtration, electrical maintenance and general building maintenance. With 24/7 phone availability and strong South West capability, APG Plus provides a practical one-stop service for plumbing, gas and maintenance needs.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Construction Plumbing +192 more
Gas Plumbing Contractor

Rickwood Plumbing and Gas

Certified Master Plumber Open · 24/7 Service

Rickwood Plumbing & Gas is a family-owned plumbing and gas fitting business delivering professional plumbing services throughout Bunbury, Busselton, Dunsborough, Margaret River, Capel, Augusta and the wider South West of Western Australia. The business provides 24/7 emergency plumbing, general maintenance, gas fitting, hot water systems, blocked drains, leak repairs and renovation plumbing for residential and commercial clients. Fully licensed and committed to quality workmanship, Rickwood Plumbing & Gas has built a reputation for honest advice, reliable service and fast response times across the region. As an MPGA member, Rickwood Plumbing & Gas is dedicated to delivering safe, compliant and high-quality plumbing and gas solutions that customers can rely on.

Large ProjectsCommercial Construction PlumbingSmall To Medium ProjectsConstruction PlumbingEnvironmental Sustainable Plumbing Marine Plumbing +151 more
Gas Plumbing Contractor Emergencies

Sanwell Pty. Ltd.

Certified Master Plumber Closed · Opens 8:00am

Sanwell Pty Ltd is a Perth-based hydraulic services contractor with more than 40 years of experience delivering major commercial, industrial and civil infrastructure projects throughout Western Australia. Established in 1984, the company specialises in hydraulic services, water and sewer infrastructure, gas services, fire systems and large-scale civil works for commercial construction, healthcare, education, defence and resource sector clients. Known for its technical expertise, long-standing workforce and ability to deliver complex projects from design through to completion, Sanwell has built a reputation as one of Western Australia’s leading hydraulic services contractors.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Tier 1 Projects +69 more
Gas Plumbing Contractor

Slade Contracting Pty Ltd

Certified Master Plumber Closed · Opens 6:00am

Slade Contracting Pty Ltd is a locally owned Kalgoorlie contractor delivering commercial plumbing, excavation, earthworks and mine site maintenance services throughout the Goldfields region. The business supports mining, industrial and commercial clients with a skilled workforce, specialised equipment and a strong commitment to safety and quality workmanship. Combining licensed plumbing services with excavation and maintenance capability, Slade Contracting provides practical end-to-end solutions for regional projects and ongoing operational support. With a reputation built on reliability, professionalism and local expertise, Slade Contracting continues to support the growth of mining and infrastructure projects across regional Western Australia

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Construction Plumbing +24 more
Backflow Gas Plumbing Contractor

Hindmarsh Plumbing Services (WA) Pty Ltd

Certified Master Plumber Closed · Opens 7:00am

Hindmarsh Plumbing Services — Trusted Commercial Hydraulic Specialists With over 50 years of industry experience, Hindmarsh Plumbing delivers commercial plumbing and hydraulic services across projects of every scale — from reactive service works through to multi-million dollar construction contracts, including defence and mining sectors. Core capabilities: * Commercial plumbing construction and hydraulic services * Reactive and preventative maintenance (24/7) * Hydraulic design and drafting * Water treatment and Legionella management * Gas fitting and gas infrastructure * Backflow testing and prevention * Stormwater and drainage systems * Leak detection and pipe location * Thermostatic mixing valve servicing * Defence and government infrastructure * Mining and resources sector works

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Tier 1 Projects +108 more
Plumbing Contractor

Altona Group

Certified Master Plumber Closed · Opens 7:30am

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.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksRoof PlumbingSmall To Medium Projects Storm Water +173 more
Gas Plumbing Contractor

The Plumbing and Gas Guys

Certified Master Plumber Closed · Opens 7:30am

The Plumbing & Gas Guys is a Western Australia–based plumbing and gas fitting business delivering reliable residential and light commercial services across the Perth metropolitan area. The company focuses on providing responsive, high-quality workmanship with an emphasis on customer service, transparency and practical solutions. With a strong reputation for prompt service and professional communication, The Plumbing & Gas Guys supports homeowners, property managers and small businesses with both maintenance and installation needs.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Construction Plumbing +66 more
Waterwise Gas Plumbing Contractor

Ashore Plumbing and Gas

Certified Master Plumber Closed · Opens 6:00am

From dripping taps to complete plumbing fit outs, our licenced plumbers deliver dependable, high-quality work for homes and businesses across the Southwest of WA.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksRoof PlumbingSmall To Medium Projects Storm Water +182 more
Waterwise Backflow Gas Plumbing Contractor Emergencies

Eltech Plumbing and Gas

Certified Master Plumber Closed · Opens 7:00am

Eltech Plumbing & Gas Pty Ltd is a Western Australian plumbing and gas fitting business servicing residential, commercial and local property clients across Perth metropolitan areas. The business provides practical plumbing and gas support with a focus on reliable workmanship, professional service and straightforward trade solutions. As a Western Australian registered plumbing and gas business, Eltech Plumbing & Gas Pty Ltd is positioned to support homeowners, businesses and property owners with plumbing repairs, maintenance, installations and general gas fitting work.

Large ProjectsCommercial Construction PlumbingForward In Ground WorksSmall To Medium ProjectsStorm Water Construction Plumbing +24 more
Gas Plumbing Contractor

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.

  1. Identify the project and contacts. Provide the site address, contact person and relevant consultant contacts.
  2. Bring together the project documents. Architectural, structural, civil, hydraulic, fire and mechanical drawings, specifications and approved shop drawings can help establish the design intent.
  3. Explain the program and staging. Share the builder program, staging requirements, project milestones and any commissioning requirements.
  4. Flag site conditions. Include access instructions, induction requirements, parking or loading details, permitted working hours and any relevant site controls.
  5. Note approvals and changes. Authority approvals, variation pathways, a penetrations register, fixture schedules and plant schedules can help clarify responsibilities and decisions.
  6. 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.

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