How to Replace a Toilet in South Africa: DIY vs Plumber Costs
3 June 2026 · Plumbers On Duty Editorial
A toilet replacement is a 90-minute job for a plumber and a half-day job for a confident DIYer. Here's the honest breakdown so you can decide which makes sense.
What a plumber charges (2026)
| Component | Cost |
|---|---|
| Callout & labour | R650 – R1,200 |
| Removal & disposal of old toilet | R250 – R500 |
| New close-coupled toilet (basic) | R1,500 – R2,800 |
| New close-coupled toilet (mid-range) | R3,000 – R5,500 |
| Wax seal & connector | R150 – R250 |
| New inlet hose & isolator | R200 – R350 |
| Total installed (basic) | R2,750 – R5,100 |
| Total installed (mid-range) | R4,250 – R7,800 |
What it costs you DIY
| Item | Cost |
|---|---|
| New toilet (basic, Builders / Brights) | R1,500 – R2,800 |
| Wax seal | R80 – R150 |
| Flexible connector | R80 – R140 |
| New isolator valve | R60 – R120 |
| Total parts | R1,720 – R3,210 |
You save R1,000–R4,500 in labour. You also accept the risk of:
- Cracking the new toilet during installation (R1,500–R5,500 loss).
- A leaking wax seal saturating your floor over weeks.
- Damaging the soil pipe collar (a R3,000+ repair).
DIY checklist
- Measure the rough-in (centre of waste outlet to wall): standard SA is 200mm, but check.
- Buy the toilet before disposal day — old units take up huge bin space.
- Shut off the isolator valve, flush, and sponge out the cistern and bowl.
- Disconnect the inlet hose, unscrew the floor bolts (or break the silicone bead).
- Lift straight up — twisting can fracture the soil pipe.
- Scrape the old wax off the floor flange completely. Any old wax = guaranteed leak.
- Press the new wax seal onto the new toilet's outlet (not the floor — easier alignment).
- Lower the toilet straight down. Don't rock it.
- Hand-tighten bolts in a cross pattern, then a quarter-turn with a spanner. Do not over-tighten — porcelain cracks.
- Connect inlet, open isolator, test multiple flushes for 30 minutes before declaring victory.
When to call a plumber regardless
- Tiled or slate floor (expensive to damage)
- Cast-iron soil pipe (requires special collar)
- Wall-hung or in-wall cistern model
- Top-floor flat (water damage liability)
Browse bathroom plumbers if you'd rather not gamble.