Who is responsible for blocked drains?
You are responsible for drains within your property boundary. Shared or public sewers beyond your boundary are the water company's responsibility. Check with your water company if unsure.
How Much Does Drainage Work Cost in 2026?
Drainage problems range from simple blockages to collapsed drains requiring excavation. In 2026, clearing a blocked drain starts at £80, while new drainage installations can cost several thousand pounds.
Typical UK range:£80 – £5,000
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Unblocking£80 – £250
High-pressure water jetting to clear blocked drains. Most common callout.
Repair£500 – £2,500
Patch repair, drain relining, or replacing a damaged section. CCTV survey included.
New Installation£2,500 – £5,000+
New soakaway, drainage run, or connection to mains sewer. Excavation and reinstatement.
Factors That Affect the Cost
- Type of work (unblock, repair, install)
- Drain depth and accessibility
- Length of drainage run
- CCTV survey requirements
- Reinstatement of drives and paths
Regional Price Variations
Emergency callout rates are highest in London (£150–£250). Standard drainage work costs are similar across the UK.
Frequently Asked Questions
How long does drain relining last?
No-dig drain relining lasts 50+ years and avoids excavation. It costs £1,000–£3,000 depending on the length and is increasingly preferred over traditional dig-and-replace methods.
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