Most kitchen leaks are under the sink and reachable in minutes. The expensive ones are the slow drips that rot a cabinet carcass and the floor beneath it before anyone opens the cupboard.
Empty the cupboard, dry it, and check again in an hour. That tells a plumber whether it is live. Full range at Leak Detection Cape Town.
Tell us where the water shows and whether it tracks to an appliance.
Get a Kitchen Leak QuoteWhere Kitchens Leak
- Flexible connectors under the sink. Perished braiding is the single most common failure.
- Waste trap and pipe joints, which leak only while the sink drains, so the cupboard looks dry between uses.
- Dishwasher and washing machine hoses, at the inlet or the appliance's own drain connection.
- Sink seal around the rim, letting water down the sides of the unit rather than into the trap.
- Mixer body, dripping down the tail into the cupboard instead of out of the spout.
- Concealed feeds to an island, running in the slab where nothing is visible at all.
Narrowing It Down
Dry everything and run one thing at a time. Water only when the sink drains is the waste side. Water with the taps closed is the pressurised supply, which is more urgent. Water only during a dishwasher cycle is the appliance or its hoses. Nothing visible but a moving meter means the feed under the floor, which needs detection.
Kitchen Leak Prices in Cape Town
| Job | Indicative range | What moves it |
|---|---|---|
| Call-out and diagnosis | R450 – R950 | Often credited against the repair. |
| Flexible connector replacement | R350 – R900 | Per connector, parts and labour. |
| Waste trap or pipe repair | R450 – R1,400 | Accessible under-sink work. |
| Mixer cartridge replacement | R450 – R1,400 | Parts vary widely by brand. |
| Sink reseal | R450 – R1,200 | Rim and worktop junction. |
| Appliance hose replacement | R350 – R1,100 | Dishwasher and washing machine. |
| Isolating valve fitted | R450 – R1,200 | Lets you shut off one fitting. |
| Detection of a concealed feed | R1,450 – R3,000 | Island units and in-slab lines. |
| In-slab or in-wall pipe repair | R1,750 – R2,500 | Excludes tiling and making good. |
| Cabinet base replacement | R1,200 – R4,500 | Where the carcass has swelled. |
These are indicative market ranges, not a quotation. They are compiled from published South African leak detection and plumbing pricing to give you a starting point for budgeting. They are not the rate card of any company on this platform.
Fit isolating valves while a plumber is already under the sink. They cost little and turn the next failure into a closed valve rather than a call-out at the main stopcock.
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Frequently Asked Questions
Why is my kitchen cupboard wet but the pipes look dry?
Water often runs along the underside of a pipe or the back of the carcass before it drips, so it collects some distance from the failure. Drying everything and running one fitting at a time isolates it.
Is a slow under-sink drip urgent?
For the plumbing, no. For the cabinet, yes. Chipboard carcasses swell and delaminate once wet, and replacing the base unit usually costs more than the plumbing repair would have.
The meter moves but the kitchen looks dry. What now?
That points at a pressurised line you cannot see, often the feed to an island or a run in the slab. Book detection rather than opening cabinets and floors on a guess.
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