Home/Solutions/Trades & Construction

Verify contractor licences and compliance certificates before work begins.

An unqualified contractor on site is a liability you didn't know you had.

Fake electrical licences, forged gas certificates, and fabricated compliance documents are a serious and underreported problem in the construction and trades industries. When an unqualified contractor causes an incident, the liability flows back to the principal contractor or property owner who engaged them. Verification before work begins is the only protection that holds.

Try now
  • No document storage
  • Digital, scanned or photographed
  • ~1 minute per verdict

See it on your trades & construction documents

Same 30-minute call, run on the document types you actually receive.

Which documents should we check? (optional, pick any)

One business day to respond. No sequence, no drip campaign. Just a calendar invite.

1 in 10
trade licence fraud cases discovered only after an incident
Unlimited
liability exposure from engaging an unverified contractor
~1 minute
to verify any contractor document submitted digitally or by scan

The problem

What fraud looks like in trades & construction

How it typically shows up, and the forensic signal that exposes each one.

Forged electrical and gas safety certificates

Fake compliance certificates are produced with convincing issuing authority branding, registration numbers, and expiry dates. Embossed seal analysis, hologram checks, and registration number format validation expose forgeries.

Altered trade licence cards and letters

Licence numbers, expiry dates, and trade categories are edited on otherwise genuine documents. Font inconsistencies, field alignment anomalies, and metadata checks reveal the tampering.

Fabricated insurance certificates

Contractors present fake public liability insurance certificates to satisfy onboarding requirements. Insurer branding, policy number format, coverage dates, and table integrity are all analysed.

How TamperCheck helps

A forensic verdict within seconds

Add TamperCheck to your contractor onboarding flow. Every licence, certificate, and compliance document a contractor submits - whether uploaded as a PDF or photographed on a phone - is forensically verified before they step on site. Physical stamps and handwritten signatures on hard-copy certifications are verified too.

Digital PDFsPhone photosScanned hard copiesPhysical stampsHandwritten signatures

What we check

  • Trade licence and certificate embossed seal authenticity
  • Hologram and security print plausibility
  • Licence number and registration format consistency
  • Expiry and issue date field tampering
  • Physical stamp ink bleed vs digital overlay detection
  • Insurance certificate table and coverage figure integrity

Documents we verify

Common document types in trades & construction

Employment ContractInvoicePurchase OrderInsurance DocumentDegree CertificateReference Letter+ 100 more document types supported
See every supported document type

FAQ

Common questions about trades & construction

How do you verify a trade licence or safety certificate?

TamperCheck checks embossed seal and hologram plausibility, registration number format, expiry and issue date consistency, and font metrics across all fields. Forged certificates almost always break one of these - a mismatched registration format or an inconsistent expiry date field exposes the tampering.

Can it check certificates issued by different trade bodies or states?

Yes. The checks are forensic, not template-matching - they inspect the structural and visual properties any genuine certificate should have, regardless of which trade authority or jurisdiction issued it. This means it works on documents from issuing bodies it has never encountered.

What about contractors submitting insurance certificates?

Public liability and workers' compensation certificates are checked for insurer branding plausibility, policy number format, coverage date consistency, and table integrity on the coverage schedule - the same document types insurers themselves rely on to verify their own claims documents.

How does this fit into contractor onboarding?

Add TamperCheck at the point a contractor submits their licence, certificate, and insurance documents - whether uploaded as a PDF or photographed on-site. The verdict returns within seconds, before the contractor is approved to start work.

See it working on your trades & construction documents

Add your first top-up and we'll match it in free credits, no contract. Upload your first document and get a verdict within seconds.

Try now Book a demo

$0.50 / document · compare with alternatives