Plumbing · Basin Trap · 2026
Bottle Trap Replacement in Singapore
Puddle inside the vanity cabinet, a drip you keep wiping, or a drain smell that will not go away? That is usually the bottle trap under the basin. See the 2026 scope bands FixMove uses for basin trap work in HDB, condo and landed homes, what a replacement actually involves, and when a reseal is the cheaper answer.
Scope-based pricesReseal checked before replacementWritten quote before workIslandwide Singapore
Quick answer: bottle trap replacement cost
FixMove handles bottle trap, P-trap, pop-up waste and sink strainer replacement across Singapore. A minor basin trap or visible leak sits in the S$60–S$120 band when access is straightforward; redoing the whole basin or sanitary fixture connection sits in the S$150–S$280 band; a choked trap that needs clearing rather than replacing sits in the S$80–S$180 band. Urgent service or a customer-requested appointment time adds one S$30 fee as a separate service fee. The trap unit, cabinet damage and any concealed pipe repair are quoted separately, and every figure here is an indicative planning range confirmed in writing before work starts.
A S$10 fuel surcharge applies to every visit. No additional standard call-out or inspection fee applies. Urgent service or a customer-requested appointment time adds one S$30 fee, subject to technician availability and confirmation. The S$30 is a separate service fee. Pricing terms.
Scope price bands
These bands come from the FixMove plumber quote book, not from independent market averages, and each one applies only to the scope named on its card. Match the fault, access, parts and reinstatement before comparing two prices.
A S$10 fuel surcharge applies to every visit. No additional standard call-out or inspection fee applies. Urgent service or a customer-requested appointment time adds one S$30 fee, subject to technician availability and confirmation. The S$30 is a separate service fee. Pricing terms.
* Indicative planning ranges only. The written quote confirms trap supply, removal, installation, connections, testing and exclusions for the actual site. Compare the full list on the plumber price list and the price index.
Signs the bottle trap needs replacing
- Water pooling in the vanity cabinet — a slow drip that only shows after the basin is used, usually at the slip nut or the tailpiece joint.
- Green or white crust on a chrome trap — corrosion working through a thin brass or chrome shell. Once it pits through, resealing will not hold.
- Cracked or stripped plastic thread — over-tightened plastic traps split at the collar and cannot be re-torqued.
- Drain smell rising from the basin — often the water seal has run dry or the trap depth is wrong for the outlet, not necessarily a failed trap.
- Slow drainage at one basin only — hair, soap scum and toothpaste build up inside a bottle trap canister and eventually need clearing or a new trap.
- Trap will not tighten any more — a body that keeps weeping after two resealing attempts is at end of life.
Cheaper first: not every leak needs a new trap. FixMove checks the washer, thread condition, tailpiece height and water seal before quoting a replacement, because a reseal is the cheaper outcome when the trap body is still sound. If a reseal will not hold, the replacement scope is priced in the same visit.
Bottle trap, P-trap or S-trap — which one fits
All three do the same job: hold a small volume of water that blocks sewer gas from coming back up the waste pipe. The difference is shape, and the shape has to match your existing waste outlet.
| Trap type | Where it is normally used | Practical notes |
|---|---|---|
| Bottle trap | Vanity and pedestal basins, exposed under-basin pipework | Vertical canister, unscrews for cleaning, looks tidy when the pipework is visible. Holds a shallower seal than a P-trap. |
| P-trap | Kitchen sinks, basins with a wall outlet | Curved pipe with a deeper water seal. Handles grease and food waste better, so it is the usual choice at the kitchen sink. |
| S-trap / floor trap | Floor waste outlets, older layouts | Discharges downward into a floor outlet. Common in older Singapore bathrooms and in floor-trap positions. |
The waste outlet position decides the choice more than preference does. Send a photo of the pipe where it enters the wall or floor, plus the space under the basin, and the compatible option is confirmed before any part is bought.
What the replacement involves
1. Photo diagnosis
Send a photo of the trap, the wall or floor outlet, and the cabinet base. Most basin traps can be identified from photos, which keeps the visit to one trip.
2. Isolate and drain
The basin is isolated at the angle valve, the trap is drained into a container, and the cabinet contents are cleared so the base stays dry.
3. Remove and inspect
The old trap comes off and the tailpiece, pop-up waste and wall outlet are checked. Hidden damage found here is quoted before it is fixed, not after.
4. Fit and seal
The replacement trap is fitted with new washers at the correct height so the seal holds, without over-torquing a plastic collar.
5. Fill and leak test
The basin is filled and released so the joint is tested under real flow, not just a trickle, and the cabinet base is dried and checked again.
6. Written record
The quote separates trap supply, labour, any rectification and exclusions. Any workmanship cover, duration and exclusions are stated in writing.
Who does the work
PUB requires regulated water service and sanitary plumbing works to be carried out by a PUB Licensed Plumber. PUB also identifies simple plumbing works — replacing a tap or a P-trap, clearing a toilet choke — that may be carried out within a handyman's allowed scope. FixMove confirms which classification applies to your job before work starts and arranges an assigned Licensed Plumber where the work is regulated. Read how that assignment and any required submission works on the PUB Licensed Plumber submission guide, or see the registrations that apply on Licences & Compliance.
Get your bottle trap quote on WhatsApp
Send: property type, a photo of the trap and the wall or floor outlet, a photo of the cabinet base, whether the leak is constant or only after use, whether the basin also drains slowly, access constraints and your postcode.
Written quote: trap supply, removal, installation, connections, any pop-up waste or tailpiece work, leak testing, responsible trade where the work is regulated, and exclusions.
FAQ
How much does bottle trap replacement cost in Singapore?
FixMove prices a bottle trap swap inside the minor tap, basin trap or visible leak band of S$60-S$120 when access under the basin is straightforward. If the pop-up waste, tailpiece and wall connection are redone together, the basin or sanitary fixture connection band of S$150-S$280 applies. The trap unit itself, cabinet damage and any concealed pipe repair are quoted separately. These are planning ranges only; the written quote confirms the actual scope.
Can a bottle trap be repaired instead of replaced?
Sometimes. A drip at the slip nut is often a perished washer or a cross-threaded joint, and a smell is often a trap that has run dry rather than a failed trap. FixMove checks the washer, thread, tailpiece height and water seal first, because a reseal is cheaper than a replacement. Replacement is recommended when the chrome shell is pitted through, the plastic thread is cracked, or the trap body no longer holds a seal after resealing.
Is a bottle trap better than a P-trap?
They do the same job in different shapes. A bottle trap holds its water seal in a vertical canister and is common under vanity basins because it looks tidy and unscrews for cleaning. A P-trap uses a curved pipe, holds a deeper seal and tends to clog less on kitchen sinks that carry grease. Which one fits depends on the waste outlet position, so send a photo of the existing pipe before choosing.
Do I need a PUB Licensed Plumber to change a bottle trap?
PUB identifies simple plumbing works, such as replacing a tap or a P-trap, that may be carried out within a handyman's allowed scope, while regulated water service and sanitary plumbing works must be carried out by a PUB Licensed Plumber. FixMove confirms which classification applies to your job before work starts and arranges an assigned Licensed Plumber where required.
How long does a bottle trap replacement take?
A straightforward swap under an accessible basin is usually a short single visit. It takes longer when the vanity cabinet has to be emptied or partly dismantled, the wall outlet height does not match the new trap, or the old trap is seized and has to be cut out. The appointment window is confirmed after the address, photos, access and required scope are reviewed.