Price guide
Cast Iron Waste Pipe Replacement Cost
Cast iron drainage was the UK standard for most of the twentieth century, and it's still found in a large proportion of homes built before the 1970s.
Replacing cast iron waste, drain, or soil pipes typically costs between **£1,500 and £4,000** in the UK, with an average around **£2,750** for a full residential replacement.
The final figure depends on the length and location of the pipework, the material you replace it with, and whether the pipes run internally through walls or externally.
