Blog>Cost Guides>How much does a septic tank inspection cost in the UK?
Last updated: 10 February 2025
How much does a septic tank inspection cost in the UK?
If you’re interested in buying a property with a septic tank, it’s a good idea to have a septic tank inspection carried out. But how much will a septic tank inspection cost? Keep reading to find out.
Fast Facts
The average septic tank inspection cost in the UK is around £275
If you’re buying or selling a rural property, it’s really important to have a septic tank inspection carried out
For accurate costs in your area speak to local septic tank experts near you
A septic tank survey assesses the condition of the unit, pipework, and connected systems. It’s all to make sure your tank is working as it should and to prevent costly problems further down the line. We look at the average septic tank inspection cost in the UK to help plan your budget accordingly.
How much is a septic tank inspection?
| Cost provided item | Low cost | High cost | Average cost |
|---|---|---|---|
| Septic tank survey | £250 | £300 | £275 |
| Last updated: May 2024 Our costs are ballpark averages - get a local tradesperson to quote now | |||
The cost of getting a septic tank survey carried out can vary depending on the access to your tank and pipework.
A surveyor may need to empty the tank or otherwise break into the system to inspect it properly, which can be expensive.
Generally speaking, the average septic tank inspection cost in the UK is around £250 - £300.
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What is a septic tank inspection?
A septic tank survey involves an initial visual inspection, followed by a thorough check of the tank and pipework. This usually requires emptying the tank, and many survey companies will also use CCTV technology to inspect the pipework.
The survey aims to do the following:
Check that the size and type of septic tank is suitable for the property (and the number of people living there)
Make sure the system complies with the Environment Agency General Binding Rules
Check that the tank isn’t discharging into a stream, ditch, land, or surface water drain
Check the tank for leaks and signs of ‘backing up’
Identify any cracks in pipework or other damage
Make sure no rainwater or run-off from certain appliances is entering the tank
Find the best septic tank experts near you
Great news, you're in the perfect place to find experienced septic tank inspectors in your area.
All our members must pass up to 12 checks - giving you confidence you're hiring a reliable tradesperson for the job.
Search your postcode to find approved septic tank specialists in your area.
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FAQs
Is it mandatory to have a septic tank inspection?
No, but it’s really important to have a septic tank inspection carried out if you’re buying or selling a rural property.
The cost of replacing the system can be enormously expensive, so regular surveys are a good preventative measure. Plus, septic tanks can become dangerous over time.
How long does a septic tank inspection take?
A septic tank inspection can take anywhere between 45 minutes to three hours. It all depends on the complexity of the job and any findings which require further investigation.
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