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Drain Unblocking guides
Practical answers to the questions people ask us most often before they book anything — what the work costs, who is responsible for what, and how to tell a small problem from one worth acting on now.
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Who Is Responsible for Your Drain: You or Thames Water?
Whether a blocked drain is yours or Thames Water's to fix, where the boundary falls, and how to avoid paying for a job someone else should do.
What Drain Unblocking Costs and What Changes the Price
What drives the cost of clearing a blocked drain in Harrow - access, method, time of day and whether the pipe is damaged. Know before you call.
CCTV Drain Surveys for Homebuyers
Why a drain survey is worth doing before you buy, what it finds, and when it matters most - particularly on older Harrow housing stock.
More guides
Early Signs of a Blocked Drain
The warning signs of a blocked drain before it backs up - slow draining, gurgling, smells and standing water. Catch it early and it costs less.
What Actually Causes Blocked Drains
The real causes of blocked drains - fat, wet wipes, tree roots and structural damage - and which of them you can prevent.
Blocked Drains and Home Insurance: What Is Covered
What buildings insurance covers for drainage - damage, collapse and trace and access - and what it almost never covers.
What to Do While You Wait for an Engineer
Practical steps to limit damage from a blocked or backing-up drain before help arrives - and what not to do.
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