Data sources

Verify active license status for every trade requiring state licensure

Fields extracted: license number, license type, status (active/inactive/revoked), expiration, disciplinary history

Statewide contractor roster for HVAC, electrical, plumbing, refrigeration, hydronics

Fields extracted: company name, license number, trade, expiration

Licensed fire protection / suppression / detection contractors

Fields extracted: company name, license number, category (suppression/detection/etc.), county

Licensed private water system contractors (well drilling, pump installation)

Fields extracted: contractor name, registration number, county

Certified lead abatement contractors

Fields extracted: contractor name, certification, county, category

Registered installers and service providers per county

Fields extracted: installer name, registration, county

Resolve street addresses to county, latitude, longitude — anchors every listing to a real Ohio county

Fields extracted: county FIPS, lat, lng, ZCTA

Map every Ohio ZIP code to its primary county

Fields extracted: ZIP, county

Real-time review counts, ratings, photos, business status

Fields extracted: rating, review count, business status, photo references, opening hours

Independent business accreditation + complaint history

Fields extracted: accreditation, rating, complaint count

Track which contractors actually pulled permits — verifies real work, not vapor listings

Fields extracted: permit number, contractor name, project type, permit date

Public consumer-protection cases — disclosed transparently per pro

Fields extracted: case number, party name, case type, year

Median Ohio trade wages by metro (informs cost guides)

Fields extracted: median wage by occupation by MSA