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.

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.