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Repair a road gully.
Blocked, broken or collapsed gully — cleared, replaced or rebuilt to road-traffic standard.
✓ Updated May 2026✓ Free quotes✓ Vetted pros
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Costs, timelines, pitfalls and the right questions to ask before any drain specialist starts on gully Repair & Replacement.
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Concrete cover cracked
Old cast iron covers crack. Replacement common.
Gully blocked with leaves
Annual cleaning prevents blockages. Wire mesh prevents debris.
Gully sunk
Settlement around gully. Needs excavation to relevel.
Wrong gully type
Surface gully where back-inlet needed (for downpipe). Replace with correct type.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and what affects price.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Standard gully replacementPlastic/concrete
£150–£400
Back-inlet gullyFor downpipe
£200–£600
Channel drain installationLinear drainage
£250–£800
Replace concrete coverStandalone cover replacement
£80–£250
Gully cleaningIncludes silt removal
£40–£120
Multiple gully repairPer project
£500–£2.5k
!
Quote spread is typically ± 18% — always get 3 quotes.
At a glance
Infographic · VideoThe Drain Specialist briefing.
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Drain Specialist explained
Gullies collect surface water from yards, paths, and driveways. Damage or blockage needs repair. Expect to pay £150–£800 for UK gully repair or replacement.
What Does the Work Involve?
Specialist locates gully (often hidden under paving). Removes broken gully. New gully installed (back-inlet for downpipe, surface gully for rainwater). Connects to sewer/soakaway. Reinstates paving surface.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Standard gully replacement | 150 | 400 | Plastic/concrete |
| Back-inlet gully | 200 | 600 | For downpipe |
| Channel drain installation | 250 | 800 | Linear drainage |
| Replace concrete cover | 80 | 250 | Standalone cover replacement |
| Gully cleaning | 40 | 120 | Includes silt removal |
| Excavation if buried | +£100 | +£300 | Per gully |
| Multiple gully repair | 500 | 2,500 | Per project |
How Long Does It Take?
Single gully repair: 2-4 hours. Multiple: 1-2 days.
DIY or Professional?
Confident DIYer can replace gully if access easy. Most homeowners call drainage contractor.
Choosing the Right Tradesperson
NADC member or general drainage contractor. Local plumber sometimes covers smaller work.
UK Regulations
Building Regs Part H for sewer connections. SuDS compliance for surface water management.
Common Problems
- Concrete cover cracked: Old cast iron covers crack. Replacement common.
- Gully blocked with leaves: Annual cleaning prevents blockages. Wire mesh prevents debris.
- Gully sunk: Settlement around gully. Needs excavation to relevel.
- Wrong gully type: Surface gully where back-inlet needed (for downpipe). Replace with correct type.
Frequently Asked Questions
Surface gully vs back-inlet?
Surface: open grating, collects rainwater. Back-inlet: enclosed, downpipe connects from above. Use correct type.
How often should gully be cleaned?
Annual minimum. Twice yearly in tree areas. Wire mesh covering reduces frequency.
Cover broken — can I fix?
Replacement covers available. Standard sizes. DIY possible with care.
Plastic or concrete gully?
Concrete: durable, traditional. Plastic: easier install, lighter, suitable for domestic.
Channel drain better than gullies?
Channel drain (Aco): continuous strip, better for driveway entrances. Gullies: point drainage, simpler.
Annual maintenance contract?
£100-£300/year for drain cleaning company. Includes gully clean + inspection. Worth for older properties.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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