How to check a plumber is qualified and does compliant work

The tension is real: you need someone to fix your pipes or install a geyser, but how do you know if they're actually qualified? A low quote and good vibes aren't proof of competence. Plumbing work touches water systems, gas lines, and sometimes structural elements—botched jobs lead to leaks, burst pipes, contamination, and expensive fixes down the line. You need concrete ways to verify someone knows their trade and works to code.

Check their registration and memberships

Start with the registers. A qualified plumber in South Africa should be able to show proof of registration with PIRB (the Plumbing Industry Registration Board). Ask for their registration number and confirm it yourself—don't just accept their word. You can verify their status online or ask them to provide documentary proof.

Beyond PIRB, some plumbers hold membership with professional bodies like SAIA (Southern African Institute of Architects) or trade associations. These aren't mandatory for all plumbing work, but they signal a commitment to standards and professional development. A plumber who doesn't know what PIRB is, or who seems evasive about registration, is a red flag.

If the work involves gas—geysers, stoves, heating systems—they should also be registered with LPGASA (Liquefied Petroleum Gas Association of South Africa) or hold relevant gas certification. Gas work is strictly regulated, and unqualified hands create serious safety risks.

Ask for proof of competence

Prove it in writing. Request a copy of their trade qualification or certificate. This might be an NQF qualification in plumbing, a City & Guilds certificate, or an apprenticeship completion document. Don't ask for originals—photocopies or digital scans are fine—but insist on seeing something tangible.

Also ask whether they hold a valid tax clearance certificate from SARS. This isn't a measure of plumbing skill, but it shows they operate above board and aren't dodging obligations. Many legitimate service providers keep this ready because clients ask for it.

For larger projects—new installations, major renovations—ask whether they carry professional indemnity insurance or liability cover. If something goes seriously wrong, insurance protects you. A plumber who can't produce evidence of cover might be flying solo and unprepared for mishaps.

Follow up with previous customers

A list of references is worthless if you don't use it. Ask for contact details of two or three recent clients—ideally for work similar to yours. Text or call them, and ask specifics:

• Did the plumber arrive on time and keep the space clean?
• Were there any surprises or hidden costs after the quote?
• Did the work actually solve the problem, or did issues reappear?
• Would they hire this plumber again?
• Did the plumber explain what they were doing and why?

If a plumber refuses to give references or says they're "busy to chase them up," walk away. Confident, established plumbers keep references on speed dial. If you get through to a reference and they sound hesitant or make excuses, that's worth noting too.

Also check Google reviews or other online platforms, but read between the lines. One negative review from someone claiming a job cost R50,000 when quoted at R5,000 might reflect a misunderstanding rather than incompetence. Patterns matter—multiple complaints about the same issue (water damage, leaks returning, unfinished work) warrant serious caution.

Spot-check their knowledge

During your first conversation or site visit, ask them to explain what needs doing and why. A qualified plumber will talk about water pressure, pipe material, gradient for drainage, or fitting specifications. They'll mention relevant standards or regulations without being pedantic. If they're vague, focus only on a price, or can't articulate a plan, they're either inexperienced or not taking the job seriously.

Before work starts, confirm they'll pull permits if the job requires them—major installations often do. Legitimate plumbers know which jobs need council approval and will factor it in. If they brush off permits, that's poor practice and potentially illegal.

Finding a plumber with the right credentials, proven track record, and clear communication takes a bit of effort, but it beats chasing down leaks and damage later. On Strove, you can filter by qualifications, read verified reviews, and compare plumbers who've proven they know their work.