How Much Does It Cost to Relocate Plumbing in Australia (2026)?
Quick Answer
Plumbing relocation costs $500–$5,000+ per fixture depending on how far it's being moved and what's in the way. Toilet relocation is the most expensive due to drainage requirements. Short moves (under 1m) are cheapest.
Plumbing Relocation Costs by Fixture
| Fixture | Short Move (<1m) | Medium (1–3m) | Long (>3m) |
|---|---|---|---|
| Toilet | $800–$1,500 | $1,500–$2,500 | $2,500–$5,000+ |
| Kitchen sink | $600–$1,200 | $1,200–$2,000 | $2,000–$3,500 |
| Shower | $700–$1,300 | $1,300–$2,200 | $2,200–$4,000 |
| Laundry tub | $500–$1,000 | $1,000–$1,800 | $1,800–$3,000 |
| Hot water system | $500–$1,000 | $1,000–$2,000 | $2,000–$3,500 |
Why Toilet Relocation is Most Expensive
- Drainage grade: Sewer pipes need minimum 1:60 fall — moving a toilet further from the stack means deeper excavation
- Slab cutting: If on a concrete slab, you need to cut concrete ($500–$1,500 extra)
- Venting: May need a new vent pipe if moved beyond maximum unvented distance
- Structural: May affect floor joists or bearers in timber-floor homes
How to Quote Relocation Work
- Always inspect first: Never quote relocation without seeing what's under the floor/in the walls
- Quote worst-case: Include contingency for unexpected obstacles (other services, rock, asbestos)
- Separate from other trades: Quote your plumbing work only — let the builder/tiler handle their own scope
- Stage payments: For large relocation jobs, use progress payments (50% deposit, 50% on completion)
Compliance
All plumbing relocation is notifiable work in QLD. Lodge a Form 7 covering all new/altered pipework. Ensure drainage grades comply with AS/NZS 3500.2 minimums.
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