How much does drain unblocking cost in London?

Clearing a blocked drain in London typically costs £90–£250. A straightforward rodding or plunging job sits near £100; jetting a stubborn external blockage runs £150–£250.

Low

£90

Typical

£140

per job

High

£250

Based on London market research, updated July 2026. First-party London Heroes data will replace this as jobs complete.

These are market-research figures, not London Heroes job data. London Heroes publishes what its own completed jobs cost in the London Home Repair Index, job by job, as they complete.

Why prices vary

The method drives the price: manual rodding is cheapest, high-pressure water jetting costs more but clears compacted blockages, and a CCTV survey (typically £150–£350) is worth it for recurring blockages because it finds the cause — often roots, scale, or a displaced joint — rather than treating the symptom.

Common questions

Whose responsibility is a blocked drain?

Inside your property boundary and serving only your property: yours. Shared drains and lateral drains beyond the boundary are usually the water company's responsibility — worth checking before paying for work Thames Water might do for free.

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Reviewed by the London Heroes Operations Team · Last reviewed: 1 July 2026. This guide is general information, not a quote or a substitute for advice from a qualified professional.