When you need a plumber, whether for an emergency repair, a planned renovation, or routine maintenance, choosing the right one can be the difference between a job done well at a fair price and an expensive, frustrating experience. Rockingham has many plumbing businesses to choose from, ranging from large companies with multiple teams to sole traders working from a van. Not all plumbers offer the same level of skill, professionalism, pricing, or customer service.
This guide provides practical advice for Rockingham homeowners on how to evaluate and choose a plumber who will do quality work, charge fairly, and stand behind their service. These criteria apply whether you need a simple tap repair, a complex leak detection investigation, a hot water system replacement, or a full bathroom renovation.
Verify Their Licence
This is the most important and non-negotiable step. In Western Australia, all plumbing and gas fitting work must be carried out by a licensed tradesperson. It is illegal for an unlicensed person to perform plumbing work, and any work done by an unlicensed plumber is not covered by insurance, may not comply with building codes, and could be dangerous.
All licensed plumbers in WA are registered with the Department of Mines, Industry Regulation and Safety (DMIRS). You can verify a plumber’s licence online through the DMIRS licence search tool. The plumber should be able to provide their licence number on request.
There are different classes of plumbing licence in WA. A plumbing contractor’s licence allows the holder to carry out plumbing work and contract directly with customers. A plumber’s licence allows the holder to carry out plumbing work under the supervision of a licensed contractor. A gas fitter’s licence is required for any work involving gas appliances, gas pipes, or gas fittings.
If your job involves gas work, such as installing or servicing a gas hot water system, gas cooktop, or gas bayonet fitting, confirm that the plumber also holds a gas fitter’s licence. Not all plumbers are licensed gas fitters.

Check Their Insurance
A reputable plumber should carry both public liability insurance and professional indemnity insurance. Public liability insurance protects you if the plumber causes damage to your property during the course of their work. Without it, you may have no recourse if a plumber accidentally damages your floors, walls, or fittings during a repair.
Professional indemnity insurance covers claims arising from defective work. If a repair fails and causes water damage, professional indemnity insurance provides a pathway for the cost of rectifying the problem.
Ask the plumber to confirm that they hold current insurance and the coverage amounts. Reputable plumbing businesses typically carry $5 million to $20 million in public liability coverage.
Additionally, confirm that the plumber has workers’ compensation insurance for their employees. If an uninsured worker is injured on your property, you could potentially face liability.
Look for Local Experience
A plumber who has been operating in the Rockingham area for an extended period will have experience with the specific plumbing challenges common to this region. Rockingham has particular characteristics that affect plumbing systems, and a plumber with local knowledge will be better equipped to diagnose and resolve issues efficiently.
Sandy soil conditions. Rockingham’s sandy soils affect the stability of underground pipes and the behaviour of drainage systems. A plumber experienced with local soil conditions knows how to properly bed and backfill pipe installations to prevent movement and damage.
Local water pressure variations. Water pressure varies across different parts of Rockingham depending on elevation, proximity to mains infrastructure, and the presence of pressure reducing valves. A local plumber understands these variations and can advise on pressure management.
Common building types and plumbing configurations. Rockingham has a mix of building eras, from 1970s brick and tile homes in Safety Bay and Warnbro to modern two-storey homes in Baldivis and Wellard. Each era has typical plumbing configurations, common failure points, and specific maintenance requirements that a local plumber will be familiar with.
Local regulations and council requirements. Plumbing work in the City of Rockingham may require compliance with local council requirements in addition to state regulations. A plumber who regularly works in the area will be familiar with these requirements.
Get Multiple Quotes
For any job that is not an emergency, obtain quotes from at least two or three plumbers before committing. Comparing quotes allows you to assess whether the pricing is fair and consistent, and it also gives you the opportunity to evaluate each plumber’s communication style, professionalism, and approach to the job.
When comparing quotes, look beyond the bottom line price. A good quote should include a clear description of the work to be performed, a breakdown of labour and materials costs, the expected timeframe for completion, any exclusions or potential additional costs, and the warranty or guarantee on the work.
Be cautious of quotes that are significantly lower than others. An unusually low quote may indicate that the plumber has underestimated the scope of work, plans to use inferior materials, is unlicensed or uninsured, or is quoting a misleading price that will increase once the work begins. Similarly, the most expensive quote is not necessarily the best. Price should be considered alongside all the other factors described in this guide.
For emergency plumbing repairs where time does not allow for multiple quotes, ask the plumber for their callout fee and hourly rate before they attend, and request a cost estimate before they begin the repair.
Read Reviews and Ask for References
Online reviews provide valuable insight into a plumber’s reliability, quality of work, communication, and pricing fairness. Check Google reviews, Facebook reviews, and independent review platforms such as ProductReview and Oneflare. Look for patterns in the reviews rather than focusing on individual comments. A plumber with consistently positive reviews mentioning punctuality, fair pricing, clean work, and good communication is likely to provide a positive experience.
Be aware that no business has exclusively five-star reviews. What matters is how the business responds to negative feedback. A plumber who responds professionally to criticism and offers to resolve issues demonstrates a commitment to customer satisfaction.
For larger jobs such as bathroom renovations or hot water system installations, ask the plumber for references from previous customers who had similar work done. A reputable plumber will be happy to provide references and may also have photos of completed work.
Word-of-mouth recommendations from friends, family, and neighbours in Rockingham are often the most reliable indicator of quality. If someone you trust had a positive experience with a particular plumber, that carries significant weight.

Ask About Warranties and Guarantees
A confident plumber stands behind their work with a clear warranty. Ask what warranty is provided on both the labour and the materials. Most reputable plumbers offer a minimum 12-month warranty on workmanship, and materials are typically covered by the manufacturer’s warranty which the plumber should pass through to you.
For larger installations such as hot water systems, the warranty arrangements are particularly important. The system itself may carry a manufacturer’s warranty of 5 to 10 years, but the installation workmanship warranty is separate and provided by the plumber. Ensure you understand what is covered under each warranty and how to make a claim if needed.
Get the warranty terms in writing. A verbal promise of a warranty is difficult to enforce if there is a dispute later.
Evaluate Their Communication
How a plumber communicates before and during the job is a strong indicator of their overall professionalism. Pay attention to the following.
Responsiveness. Do they return calls and messages promptly? A plumber who takes days to respond to an enquiry is likely to be difficult to reach if you have a problem after the job is done.
Clarity. Do they explain the problem in terms you can understand? Do they explain the repair options and the reasoning behind their recommendation? A good plumber educates the customer rather than just dictating what needs to be done.
Punctuality. Do they arrive on time or call ahead if they are running late? Reliability is a basic indicator of professionalism.
Cleanliness. Do they clean up after themselves? A professional plumber leaves your home as clean as they found it, or cleaner. Drop sheets, removal of debris, and wiping down work areas are standard practice for quality plumbers.
Documentation. Do they provide a written invoice that clearly describes the work performed, the materials used, and the warranty terms? Proper documentation protects both you and the plumber.
Avoid These Red Flags
Be cautious of any plumber who demands full payment upfront before starting work. Requests a large cash-only payment to avoid GST. Cannot provide a licence number or refuses to show their licence. Arrives in an unmarked vehicle with no identification. Pressures you to commit to additional work on the spot without giving you time to consider. Provides a verbal quote only and refuses to put it in writing. Criticises the work of previous tradespeople without providing specific justification. Has no online presence, no reviews, and no verifiable history.
These red flags do not automatically mean the plumber is dishonest, but they warrant extra caution and further investigation before proceeding.

Make an Informed Decision
Choosing the right plumber is about more than finding the lowest price. It is about finding a licensed, insured, experienced professional who communicates well, charges fairly, does quality work, and stands behind their service with a genuine warranty.
Take the time to verify credentials, compare quotes, read reviews, and ask questions. The effort you invest in choosing the right plumber will pay dividends in the quality of the work, the longevity of the repair, and your overall satisfaction with the experience.
Plumber Rockingham is a licensed and insured plumbing business serving Rockingham, Baldivis, Port Kennedy, Secret Harbour, Warnbro, and all surrounding suburbs. We provide upfront pricing, clear communication, and workmanship warranties on all our plumbing services. Contact us for a no-obligation quote and experience the difference that a professional, locally experienced plumber makes.