What to check before you exchange contracts.
Buying a home in the Midlands?
There is one part of the property you will seldom see during a viewing, yet it can lead to some of the largest repair bills after you move in.
The drains.
Drainage problems sit underground, so they often stay hidden until completion. Across Birmingham, Nottingham, Leicester and surrounding towns, buyers regularly discover issues months later, especially in older properties.
This checklist helps you identify risks early and determine when a proper drain survey is warranted.
Property age and pipe risk
If any of the following apply, drainage risk increases:
- Property built before 1980
• Mature trees close to the house
• Large shrubs near boundaries or driveways
• Located in an older suburb or established estate
• Extensions added at some point
• No drainage paperwork or records available
Why this matters
Many Midlands homes still rely on clay drainage pipes. Over time, joints shift, pipes crack, and tree roots work their way inside. Once damage starts, blockages usually return again and again.
Things to notice during a viewing
You are not inspecting drains, but small warning signs are often visible.
Look out for:
- Slow-draining sinks or baths
• Gurgling sounds after flushing toilets
• Foul smells indoors or near external drains
• Damp or slightly sunken garden areas
• Outside gullies holding water
• Signs of rats around bins or drainage points
None of these confirms a major issue on its own, but they are rarely coincidental.
Questions worth asking the seller
Most buyers ask about the boiler or the roof. Few ask about drainage.
Consider asking:
- Has any drainage work been carried out?
• Are drains shared with neighbours?
• Has the property had repeat blockages?
• Have drainage-related insurance claims been made?
Unclear answers usually mean uncertainty, and uncertainty carries risk.
What repairs can actually cost
Drain problems range from simple fixes to major works:
- High-pressure jetting: typically lower cost
• Root cutting or pipe relining: mid-range repair
• Excavation and pipe replacement: high cost
• Reinstating gardens, patios or driveways: additional expense
Without inspection, you are effectively buying without knowing what sits underground.
When a drain survey makes sense
A CCTV drain survey is strongly worth considering if:
- The property is more than 40 years old
• Mature trees are nearby
• There is a history of blockages
• The area contains older housing stock
• You want negotiation leverage before the exchange
• You want reassurance before committing
A survey provides:
- Video evidence of pipe condition
• Structural grading
• Repair recommendations
• Documentation for negotiations if needed
It replaces guesswork with facts.
What happens when buyers skip this step
Drain defects often stay hidden until something forces the issue:
- Flooding after heavy rain
• Sewage backing up indoors
• A collapsed pipe is blocking the system
• Shared drainage problems raised by neighbours
At that point, ownership and the cost sit with you.
Why drainage risk is common in the Midlands
The region’s housing mix creates predictable drainage challenges:
- Victorian and Edwardian infrastructure
• Clay pipe drainage systems still in use
• Tree-lined streets with mature roots
• Mixed public and private sewer connections
• Historic extensions and alterations
Local knowledge genuinely matters here.
Before you exchange, ask yourself one question
Do I actually know the condition of the drainage system underground?
If the answer is no, you may be accepting risk you cannot see yet.
And once contracts are exchanged, it becomes yours to deal with.
For all your drainage problems, call The Drain People on 0116 296 8186
