Not every plumbing job needs a licensed plumber — a dripping outdoor tap washer or a loose showerhead is genuinely a fair DIY or handyman job. But some jobs carry real legal, financial, and safety risk if they're not done by someone qualified. Here's how to tell the difference.
1. Anything involving gas
Gas installations and repairs legally require a qualified installer who can issue a Certificate of Conformity (CoC). This isn't red tape for its own sake — incorrect gas work is a genuine safety hazard, and insurers can refuse claims tied to non-compliant gas installations. If a job involves a gas line, gas geyser, or gas hob, it needs a licensed installer, full stop.
2. Anything that needs a compliance certificate
Selling a property in South Africa typically requires a valid plumbing and/or gas compliance certificate. Work done by an unqualified person can't be certified after the fact without being inspected and potentially redone — which becomes a problem at exactly the wrong moment, mid-sale.
3. Main line or sewer work
Problems with your main water supply line or sewer connection affect the whole property's water safety and drainage. Incorrect repairs here can lead to contamination risks or drainage failures that are far more expensive to fix than the original problem.
4. Anything behind a finished wall
If a repair means opening a wall, floor, or ceiling, get it right the first time. Redoing plumbing work after tiling or plastering is finished costs significantly more than the original job would have, in both material and labour.
5. Recurring problems with no obvious cause
If the same issue — a blocked drain, a pressure problem, an intermittent leak — keeps coming back after DIY fixes, that's usually a sign the actual cause hasn't been found yet. A qualified plumber with proper diagnostic equipment (drain cameras, pressure testing) finds the real cause rather than repeatedly treating the symptom.
What “qualified and licensed” actually means
In South Africa, a qualified plumber has completed a recognised trade qualification and, for gas work specifically, holds the relevant gas installer registration needed to issue compliance certificates. When getting quotes, it's reasonable to ask directly whether the person doing the work is qualified to certify it — not just whether they can do the job.
The cost difference between a handyman and a licensed plumber is smallest at the start of a job and largest when something goes wrong later — that's when the certification, or lack of it, actually matters.