Unchoke the bowl, renew the siphon, or replace the pan collar
Toilet bowl repairs in Singapore run from S$120 to S$550. An emergency auger unchoke is S$120 to S$240. A dual-flush siphon, fill valve and donut washer is S$130 to S$240. A leaking rear pan collar is S$260 to S$480. Bowl replacement labour is S$168, and supply and install starts from S$298. A cracked or rocking WELS bowl, supplied and installed, is S$380 to S$550.
trusted by 500+
Choke, siphon, or a leak under the bowl
A bowl that fills from below is not the same fault as a button that runs. The collar leak stains the ceiling downstairs. The siphon only refills the pan.
| What you see | Likely cause | What to do first / typical cost |
|---|---|---|
| Water rises in the bowl and will not leave | Tissue, wipes or scale in the trap | Auger unchoke: S$120 to S$240 |
| The cistern runs or the button sticks | Siphon, fill valve or donut washer | Internal set: S$130 to S$240 |
| A damp patch behind or under the bowl | Perished pan collar | Collar replacement: S$260 to S$480 |
| The bowl rocks or the china is cracked | The pan itself has failed | Labour S$168, supply and install from S$298, or a WELS set S$380 to S$550 |
2026 toilet bowl repair bands
A concealed cistern behind a flush plate is a different opening. Use concealed cistern repair for that, and the choke guide if the floor trap is the slow point.
| Job | 2026 SGD band | Inclusions |
|---|---|---|
| Toilet bowl or bathroom floor-trap mechanical auger unchoke | S$120 to S$240 | Clearing tissue, wipes or scale without damaging the porcelain glaze. |
| Exposed cistern dual-flush siphon, fill valve, button rod and donut washer | S$130 to S$240 | Internal dual-flush siphon, float fill valve, push-button rod and the cistern-to-pan rubber donut washer. |
| Leaking toilet pan collar or offset connector replacement | S$260 to S$480 | Lift a 1-piece or 2-piece WC, replace the perished rubber or PVC pan collar, and reseal the base with anti-fungal sanitary silicone. |
| Cracked or rocking toilet bowl replacement, WELS 2-tick or 3-tick set | S$380 to S$550 | Supply and install of a PUB WELS S-trap or P-trap WC set on the existing outlet. A new waste position is a licensed plumber item. |
| Toilet bowl replacement, labour only | S$168 | Labour to set a bowl you supply on the existing outlet. |
| Toilet bowl supply and install | from S$298 | Supply and install from S$298 on the existing outlet. The WELS 2-tick or 3-tick set is a separate specified bowl. |
Plan Unchoke the bowl, renew the siphon, or replace the pan collar
Isolate the stopcock or the heater switch before any fitting is loosened.
Photograph the existing joint so the replacement can match the thread and the outlet.
Do the repair on the existing point. Do not chase a new pipe unless a licensed plumber is on the job.
Run water, check the ceiling below if the bathroom is over another room, and wipe the joint dry.
- Toilet bowl or bathroom floor-trap mechanical auger unchokeS$120 to S$240
- Exposed cistern dual-flush siphon, fill valve, button rod and donut washerS$130 to S$240
- Leaking toilet pan collar or offset connector replacementS$260 to S$480
- Cracked or rocking toilet bowl replacement, WELS 2-tick or 3-tick setS$380 to S$550
| Access | HDB | Condo | Landed |
|---|---|---|---|
| Approval | Town Council hours for noisy work. An HDB permit only if the layout or a hack changes. | MCST by-laws, a water-shutdown window, and a deposit if the by-law asks for one. | No HDB permit. A new sewer run or a structural chase is still PUB or BCA, not a handyman visit. |
| Water | Like-for-like on the existing outlet stays maintenance. | The same rule, plus the building may shut the riser for a short window. | Long runs, pumps and tanks need the plumber to see the plant, not only the tap. |
| Access | Service yard and bathroom are usually reachable the same day. | Lift booking and protection of common areas come first. | A roof, a gutter or an external pipe may need safe access before anyone climbs. |
- Photo of the leaking joint and the brand mark
- Say if the water can be isolated from inside the flat
- Clear the cabinet under the sink
- Mention a condo shutdown or an HDB hacking rule if you already know it
- Keep children and pets out of the wet area during the visit
Frequently Asked Questions
How much does it cost to unchoke a toilet bowl in Singapore?
A mechanical auger clear of tissue, wipes or scale is S$120 to S$240. The glaze is not scraped to get there.
Why does the ceiling below a bathroom stain?
A perished pan collar lets black water out under the bowl. Replacing the collar and resealing the base is S$260 to S$480. It is not a painting job until the collar is renewed.
Is a new toilet bowl licensed plumbing?
Setting a WELS S-trap or P-trap bowl on the existing outlet is S$380 to S$550. Labour only, when you supply the bowl, is S$168. Supply and install starts from S$298. A new waste position needs a PUB Licensed Plumber. Floor hacking needs an HDB permit through V On Construction.