Home leak detection is a fixed sequence: confirm at the meter, isolate the section, then pinpoint it. Most jobs finish inside two hours.
Detection is quoted separately from repair, because until the cause is known nobody can price the fix. Full method detail at Leak Detection Cape Town.
Send your meter reading with all taps closed, and a photo of any damp patch.
Get a Residential QuoteThe Order a Home Is Worked Through
- Meter test with everything closed, to prove water is escaping.
- Isolate the house at the internal valve, which splits the buried run from the internal plumbing.
- Dye-test the toilets, since a passing flush valve is the most common single cause.
- Isolate the geyser and check the hot lines with a thermal camera.
- Acoustic tracing on whatever is left, indoors or under paving.
What It Usually Turns Out To Be
| Symptom | Most common cause |
|---|---|
| Bill up, nothing visible | Silently leaking toilet, then a buried mains leak. |
| Warm patch on a floor | Hot water line in the slab. |
| Wet ceiling, no rain | Geyser, its valves, or a hot line above. |
| Damp wall at skirting level | Leak under the slab, or rising damp. They look identical. |
| Damp only after rain | Roof or external wall, not plumbing. |
Residential Leak Detection Prices in Cape Town
| Job | Indicative range | What moves it |
|---|---|---|
| Standard domestic detection | R1,450 – R3,000 | Call-out plus the first hour on site. |
| Additional hours | R400 – R900 per hour | Larger homes and multiple leaks. |
| After-hours or emergency | R600 – R1,300 per hour | Plus a call-out of R500 – R1,000. |
| Flat or townhouse detection | R1,200 – R2,600 | Smaller installation, faster to isolate. |
| Thermal imaging survey | R1,200 – R2,800 | Hot lines and damp extent. |
| Tracer gas on a plastic line | R4,750 – R6,000 | Plus gas at R1,400 – R1,800 per bottle. |
| Toilet flush valve repair | R450 – R1,400 | Frequently the whole answer. |
| Burst pipe repair | R1,750 – R2,500 | Excludes tiling and paving. |
| Written report for insurer | R650 – R1,800 | Often bundled with detection. |
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.
Before booking anything, dye-test every toilet. It costs nothing, takes 20 minutes, and resolves a large share of unexplained water bills on its own.
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Frequently Asked Questions
How long does detection take on a normal house?
One to two hours for a straightforward leak. Long buried mains runs, several leaks at once, or difficult access under paving take longer.
Will anything be broken during detection?
No. Detection is non-invasive throughout. Only the marked point is opened, and that happens at the repair stage rather than during the diagnosis.
What if no leak is found?
You have still paid for a diagnosis, and a specialist who proves the plumbing is sound has answered the question. Ask up front what the fee is if nothing is found, since policies differ.
Is detection covered by household insurance?
Many policies cover detection and repair of a sudden burst but exclude gradual wear. Check whether your insurer requires their own appointed contractor before you book.
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