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Builder Got It Wrong: Cost The Homeowner £55,000

Imagine paying a builder to do your dream extension — and ending up paying £55,000 more just to fix their mistakes.

1 February 202308:005 min read

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Imagine paying a builder to do your dream extension — and ending up paying £55,000 more just to fix their mistakes.

This is exactly what happened to one homeowner who trusted a builder who talked a good game but delivered a disaster. The extension had to be partially demolished and rebuilt because it failed building control inspections.

How it went wrong

The builder assured the homeowner that everything was "up to standard" — but no building control application was ever submitted. When the homeowner eventually brought in an independent surveyor, the list of defects ran to several pages.

The cost

  • Original build cost: £45,000
  • Remedial works: £55,000
  • Total: £100,000 for what should have been a £45,000 extension
  • Lessons

  • Always verify building control applications have been submitted
  • Never accept verbal assurances — get everything in writing
  • Run a Builder Due Diligence RAG check through Contraka before appointing a builder
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