Contractor verification. Finally done right.

Angi is a lead-generation marketplace. Its “pre-screening” is largely a membership and advertising tier plus an individual background check on the business owner — it surfaces pros who pay to be listed, not a fraud verdict on the entity. Groundcheck never sells leads and is never paid by the contractor; we read the public record and return whether the company is who it claims to be, free for the homeowner.

Thumbtack matches you with pros who bid on your job. Its trust signals are reviews and an optional background check, geared toward booking work fast — not toward catching license lapses, liens, or an operator who dissolved a complaint-ridden LLC and re-registered next door. Groundcheck checks the entity across state lines before you sign, with the sources behind every signal.

ISNetworld is enterprise supply-chain compliance, built for industrial and oil & gas operators vetting their vendors. Contractors pay an annual fee to maintain certification, and onboarding can take days to weeks. That’s the right tool for a refinery’s approved-vendor list — and the wrong one for a homeowner or a carrier who needs an answer in minutes. Groundcheck is instant, entity-first, and free for the person checking.

Checkr runs FCRA-regulated background checks on individuals— criminal, employment, and identity screening with consent, disclosure, and adverse-action workflows. That’s a different product: it vets a person, not a business. Groundcheck verifies the entity (license, registration, liens, permits, phoenix history), which falls outside FCRA. For individual checks we route through a licensed CRA — the two are complementary, not interchangeable. See our FCRA page.