Commercial Plumbing Services

Specialised commercial plumbing services for all your plumbing needs. Providing specialised services catering to your every plumbing need, including: Backflow Testing and Prevention, Thermostatic Mixing Valve Testing and Installation, Fire Service Repairs and Replacement, Sewerage and stormwater repair, Roofing repairs.


General Site Maintenance and Audits

As one of the leading mechanical plumbing companies in Melbourne, we understand that your business’ plumbing needs to work efficiently and safely. We design preventive maintenance programs specifically tailored to your establishment’s needs, allowing you to focus on running your business.


Backflow Testing and Prevention

Backflow testing is a mandatory requirement that prevents water contamination. All businesses must be regularly audited by a commercial plumbing contractor in Melbourne to ensure safe drinking water standards.


TMV Testing and Installation

All businesses are required to have an effectively working thermostatic mixing valve. Our Williamstown plumbers have a range of industrial TMV testing and insulation that will keep your business safe and compliant with all industry regulations.


Gas Fitting

Gas leaks can be dangerous to your business. Our experienced gas fitting professionals are fully accredited for conducting replacements, repairs, alterations, servicing and testing using the latest in leak-tracing technology.

Melbourne Commercial Plumbing Contractors

At Banjo Nominees, we have a highly qualified and experienced team of mechanical plumbers and commercial plumbers in Melbourne. Our team of skilled technicians provide mechanical plumbing services and commercial plumbing installation and maintenance across Melbourne’s C.B.D, Western and Northern Suburbs. Whether you’re looking for a commercial plumber, mechanical plumber in Melbourne or a plumber in Williamstown, our plumbing experts will be there to help you out.

Does your business have an emergency plumbing issue? Don’t fret – Our licensed commercial plumbing contractors in Melbourne are available 24 hours a day, 7 days a week. Our technicians operate from fully equipped vans, ensuring that your problems can be quickly and efficiently resolved.

Download our Brochure

If you are looking for commercial or mechanical plumbing services, Banjo Nominees have got you covered. We offer a comprehensive range of services, including; Backflow Testing and Prevention, Thermostatic Mixing Valve Testing and Installation, Gas Fitting, Sewerage and Stormwater Repair, Fire Service Repair and Replacement, Trade Waste Installation and Maintenance and a number of other mechanical and commercial plumbing Melbourne services.

Banjo Nominees have been in the commercial and industrial plumbing industry since 1958, so you can rest assured that we have the experience and know-how to get the job done. We are recognized as one of the leading industrial and commercial plumbing companies in Melbourne.

Get in contact with the Melbourne commercial plumbing experts at Banjo Nominees today.

What We Do

Backflow Testing and Prevention

Fire Service Repairs & Replacement

Sewerage & Stormwater Repair

Gas Fitter Melbourne

Roofing Repairs

General Site Maintenance and Audits

Safety Shower and Eyewash Testing

Plumbing Maintenance Programs

Why Choose Us

Fast Reliable Service

Banjo Nominees is available 24/7 to provide you fast and reliable mechanical plumbing services. We can assure an experienced plumber and an immediate solution; Our commercial plumbing contractors in Melbourne operate with fully equipped vans and are always ready anytime you call for our assistance.

We offer customised plumbing solutions

Problems in your mechanical plumbing systems can vary at times. Our Williamstown plumbers will provide the most appropriate and tailored solution for your specific plumbing needs, giving special consideration to your budget requirements throughout. Customised mechanical plumbing services that suit you.

We serve a wide range of industries

We have an extensive network of clients, ranging from industrial, chemical and petroleum sites to hotels, hospitals, education and training institutions. We also work with government departments, real estate companies and facility management organisations.

Our Williamstown plumbers are knowledgable and highly experienced with a range of industrial plumbing systems and the associated risks.

Operating since 1958 in the commercial plumbing sector

Established since 1958, you can rest assured with the quality and efficiency of service we can provide. Banjo Nominees have been the top choice for commercial, industrial and mechanical plumbing in Melbourne for decades.

Our Williamstown plumbers understand the needs and high industrial standards of the larger commercial and mechanical plumbing sector, and bring that knowledge and expertise to every job they attend.

Your satisfaction is our top priority

We take customer service and satisfaction very seriously. Check out what some of our satisfied clients have to say with regards to our service delivery in our Testimonials.


CSR has been using Banjo Nominees for all of our plumbing needs, for more than 30 years and I can thoroughly recommend them.
They are always punctual and relied upon to come up with solutions to any problem.
John and his team are always receptive to our needs and always conduct themselves in a professional manner.

Ben Gronow – CSR Lightweight Systems Maintenance Supervisor

Our company has been using Banjo Plumbing since 1975. We always found John Patterson reliable, trustworthy and his tradespeople have always completed their tasks professionally, with pride and to our satisfaction.
I am pleased to recommend Banjo Plumbing for maintenance and new plumbing and roofing projects for a cost effective and satisfactory outcome.

Gabor Hilton – Oxford Cold Storage Company Engineering Manager

Banjo Nominees has been engaged by St Vincent’s Hospital (Melb) Ltd Engineering and Infrastructure Department to carry out the different plumbing works. 
Banjo Nominees have been part of the St Vincent’s team of contractors from May 2019 there services are used across both the Fitzroy and St Georges Campus and also our off site Aged Care sites The standard of works to date has been nothing but professional and we continue to utilize their services on a regular basis.

The Engineering & Infrastructure Team – St Vincent’s Hospital

Banjo has been a contractor for SIMS ALUMINIUM for over twenty five years. The company provides a reliable service with high quality workmanship. It conducts itself with unsurpassed integrity and professionalism.
I would have no hesitation what so ever to recommend Banjo for all plumbing installations or repairs.

Michael Lopatecki – Plant Engineer

Our Partners

mechanical plumber partner - st. vincents

Mechanical Plumbing Partner - Footscray Hospital

mechanical plumbing services partner - rmelbchildren

Mechanical Plumbing Partner - St George Hospital