How Much Does Drain Unblocking Cost in Hampshire & Surrey?
By Alton Facility Services • Reviewed by Senior Pump Engineer • Updated June 2026
If you are dealing with a blocked drain in Hampshire or Surrey, understanding likely costs can help you act quickly and avoid unnecessary expense.
Prices vary depending on the type of blockage, access, urgency and whether specialist equipment such as high-pressure jetting is needed.
This guide explains typical drain unblocking cost factors and when extra investigation may be required.
Quick Answer
Drain unblocking costs vary depending on access, blockage severity, location and urgency.
Minor indoor blockages may cost less than external drain blockages, high-pressure jetting or emergency callouts.
Typical Drain Unblocking Costs
As a guide, minor indoor blockages may fall around £80–£150, outside drain blockages around £100–£250, high-pressure jetting around £150–£300 and emergency call-outs around £150–£400.
Costs can vary by property, access, equipment needed and local availability.
What Affects the Cost?
The main cost factors are where the blockage is, how easy it is to access, how severe it is, and whether it is during standard hours or out-of-hours.
Older properties in areas such as Winchester, Farnham, Guildford and Woking may have more complex drainage layouts.
Detached homes, flats, commercial sites and shared drainage systems can all affect time and access.
Minor Indoor Blockages
Minor blockages may involve sinks, baths, showers or internal waste pipes.
These are often caused by grease, hair, soap residue or small obstructions.
If multiple fixtures are affected, the issue may be further down the drainage system.
Outside Drain Blockages
External drain blockages can involve gullies, inspection chambers or main drainage lines.
They may be caused by leaves, debris, fat, silt, wipes, roots or damaged pipework.
Outside blockages often need more investigation than a simple indoor blockage.
High-Pressure Jetting
High-pressure jetting is commonly used for more stubborn blockages, grease buildup, silt and debris.
It can be more effective than basic rodding where the blockage is heavy or further along the pipe.
If the problem keeps returning after jetting, a CCTV survey may be needed.
When Costs Increase
Costs may increase where access is difficult, the blockage is severe, out-of-hours attendance is needed, or additional investigation is required.
If there is suspected pipe damage, repair costs are separate from unblocking costs.
For structural problems, see our drain repair cost guide.
Do You Need a CCTV Survey?
If the drain blocks repeatedly or the engineer suspects damage, a CCTV survey can identify the root cause.
See our CCTV drain survey cost guide for local cost guidance.
A survey can help avoid repeated callouts by showing whether there are roots, cracks, collapse or poor pipe condition.
How to Reduce Future Costs
Avoid putting grease, wipes, food waste and debris into drains. Keep outdoor gullies clear and act early if drains smell or slow down.
Our blocked drain prevention guide gives practical prevention tips.
Get Drain Unblocking Help
Alton Facility Services provides drainage support across Hampshire, Surrey and surrounding areas.
Need a fast quote? Contact our team or call 0808 175 5779.
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