Sewage Smell Outside House
A strong sewage or rotten-egg smell around the outside of the property, particularly near drains or manholes.
What Is Causing This?
- 1Cracked or broken drain pipe allowing sewage to seep out
- 2Blocked vent pipe not allowing gases to escape safely
- 3Dry trap in an unused drain letting sewer gases rise
How Urgent Is This?
This should be fixed in the coming weeks. Leaving it may allow the problem to worsen and cost more to repair.
What Needs to Be Done
A drainage specialist will inspect the drains with a CCTV camera to locate cracks or breaks, repair the damaged section, and check all traps and vents.
How Much Will It Cost?
National average estimate
Labour: £283 – £913 | Materials: £75 – £318
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Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
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Ask a QuestionHow to Prevent This
Run water through infrequently used drains monthly to keep traps filled. Have drains inspected if you notice new smells. Keep drain covers in good condition.
Related Problems
An external drain or manhole cover with standing water, overflowing, or draining very slowly.
An underground drain pipe that has broken, collapsed, or caved in, causing persistent blockages or sinkholes.
Drains making gurgling or bubbling sounds when water runs out of sinks, baths, or toilets.
Other Drainage Specialist Problems
An external drain or manhole cover with standing water, overflowing, or draining very slowly.
Sewage or waste water spilling out of a drain, manhole, or inspection chamber, especially during heavy rain.
Bath or shower water taking a long time to drain away, sometimes backing up around the plughole.
Drains making gurgling or bubbling sounds when water runs out of sinks, baths, or toilets.