Skip to content
All guides
General4 min read · Jun 2026

What verification checks

Reviews can be bought. A verification ID cannot. A walk through of the eight checks behind every verified builder, and why they matter when you are choosing one.

What verification checks

Reviews vs verification

Star ratings can be bought or selectively shown. Verification is a documentary check that either passes or it doesn't. Compare Builders verifies both sides: the builder's credentials, and the homeowner's identity and budget. Neither party is dealing with a stranger.

The eight checks behind the badge

  • Companies House: the trading entity and its directors are real and current.
  • Public liability insurance: minimum £2m, certificate checked at onboarding and at each renewal, with expiry tracked.
  • VAT registration status.
  • Trade-body membership: verified against the relevant body.
  • Reputation & Trust Portfolio: photo-verified work, public reviews and rated Compare Builders jobs.
  • Right to work on the principal: confirmed alongside their photo ID.
  • Government photo ID check on the principal: they're working in your home.
  • Independent financial-standing check on the company.

Why it's public

The whole set is re-verified every year. The badge can lapse, so it stays honest. And every verified builder has a public verification page at /verify/CB-XXXXX. Anyone can independently check the status: you, your solicitor, a neighbour. Trust you can audit beats trust you have to take on faith.

Ready to put this into practice?

Tell us about your project and get matched with verified builders. Or check any builder by their CB number.