License coverage and data methodology

The state availability table lists the datasets currently live. Review available fields, source limitations, and how to interpret StateLicense results.

State availability

Search the listed datasets by business name, verify a credential number, or use the dashboard and API. Coverage is limited to the credential types listed for each jurisdiction.

StateAuthorityCoverage scopeRefreshCore fields
AlaskaFully liveAlaska Division of Corporations, Business and Professional Licensing (CBPL)Statewide Construction Contractors professional licensesManual browser-export snapshotsLicense number, owner and DBA, contractor type, raw status, dates, location, import freshness
ArkansasFully liveArkansas Contractors Licensing Board (CLB)Statewide numbered commercial, residential-builder, and home-improvement or remodeler licensesManual snapshot importsBusiness identity, type, expiration, work scope, project limits, location, snapshot freshness; status not reported
ArizonaFully liveArizona Registrar of Contractors (ROC)Statewide active ROC contractor licensesManual snapshot importsBusiness and DBA identity, qualifying party, classification, issue and expiration dates, source snapshot date
CaliforniaFully liveCalifornia Contractors State License Board (CSLB)Statewide CSLB contractor classificationsDailyStatus, classifications, dates, bond, workers’ compensation, location
ColoradoFully liveColorado Department of Regulatory Agencies, Division of Professions and OccupationsStatewide EC electrical and PC plumbing contractor business registrations, including historical and adverse recordsDaily at 7:00 AM Pacific; operational polling, not a publisher update guaranteeEC/PC registration number and numeric aliases, Business identity and portal credential identity, Raw and normalized status, Original issue and expiration dates, Regulatory-action presence when reported, Mailing location and acquisition freshness
ConnecticutFully liveConnecticut Department of Consumer Protection (DCP)Statewide HIC and NHC registrations and MCO licenses, including historical and adverse recordsDailyCredential kind, source status, type, dates, business identity, location, freshness
DelawareFully liveDelaware Division of RevenueStatewide resident and nonresident contractor business licensesWeekly Thursday at 10:20 AM PacificBusiness-license number, legal and trade names, activity, current term dates, mailing location, source freshness
FloridaFully liveFlorida Department of Business and Professional Regulation (DBPR)Construction and electrical contractor datasetsWeeklyStatus, license type, classification, dates, jurisdiction, location
IowaFully liveIowa Department of Inspections, Appeals, and Licensing (DIAL)Statewide active construction contractor registrationsWeekly Tuesday at 10:00 AM PacificRegistration number, business identity, active status, issue and expiration dates, source freshness
IllinoisFully liveIllinois Department of Financial and Professional Regulation (IDFPR)Statewide roofing contractor licenses, including identified historical and adverse recordsWeekly Monday at 6:00 AM PacificLicense number, business or licensee, raw and normalized status, dates, LIMITED/UNLIMITED qualifier, city/state/ZIP, disclosure summary
MinnesotaFully liveMinnesota Department of Labor and Industry (DLI)Statewide residential business contractor licenses and construction contractor registrationsDailyCredential kind, source status, subtype, dates, business identity, location, freshness
New JerseyFully liveNew Jersey Division of Consumer AffairsStatewide Home Improvement Business Contractor registrations, including identified historical and adverse recordsWeekly Monday at 7:20 AM Pacific; operational polling, not a publisher update guaranteeRegistration number and punctuation aliases, Business identity and stable holder identity, Raw and normalized status, Issue and expiration dates, Mailing location and acquisition freshness
New York CityFully liveNYC Department of Consumer and Worker Protection (DCWP) and Department of Buildings (DOB)DCWP home improvement contractors and DOB construction-trade licensesDOB daily; DCWP weeklyStatus, license type, business or licensee, dates, phone, location
New York State public workFully liveNew York State Department of Labor (NYSDOL)Statewide public-work and covered Article 8 private-project contractor registrationsDaily at 5:40 AM PacificCertificate number, business identity, registration status, issue and expiration dates, source freshness
OhioFully liveOhio Construction Industry Licensing Board (OCILB)Statewide commercial electrical, HVAC, hydronics, plumbing, and refrigeration trade credentials and company associations from the active-status rosterWeekly Monday at 6:20 AM Pacific; operational polling, not a publisher update guaranteeTrade-prefixed number, individual licensee, company association, source and normalized status, expiration, available company contacts, acquisition freshness
OregonFully liveOregon Construction Contractors Board (CCB)Statewide active CCB license endorsementsDailyActive status, endorsement, dates, RMI, bond amount, phone, location
TennesseeFully liveTennessee Board for Licensing ContractorsStatewide Board contractor business licenses, including historical statusesManual dashboard snapshot importsLicense number, business, raw status, classifications, project limit, dates, location
TexasFully liveTexas Department of Licensing and Regulation (TDLR)Six TDLR-regulated contractor categoriesDailyStatus, license type and subtype, expiration, owner, phone, location
VirginiaFully liveVirginia Department of Professional and Occupational Regulation (DPOR), Board for ContractorsCurrent Class A, B, C, and temporary contractor business licensesWeekly on Tuesday after DPOR publicationCurrent status, class, specialties, dates, business, location
WashingtonFully liveWashington State Department of Labor & Industries (L&I)Statewide construction, electrical, plumbing, and elevator contractor recordsDailyStatus, license type, specialty, dates, principal, phone, location

Every live source supports lookup by credential number and search by business name. Coverage describes the datasets currently loaded in the production API, not every licensing authority in each state. Alaska uses manual browser exports with no source publication timestamp. Delaware covers contractor business licenses, and New York State covers public-work registrations alongside separate NYC licenses. Arizona is active-only; Iowa covers registrations; Tennessee excludes Home Improvement, LLE, and LLP. Oregon coverage is limited to active statewide CCB endorsements. Virginia coverage is limited to current DPOR Board for Contractors business licenses. Connecticut HIC and NHC are registrations; MCO is a license. Minnesota construction contractor registration does not replace a required contractor license.

Read sources, schedules, and limitations →

Illinois and Ohio — live trade coverage

Illinois roofing and Ohio OCILB commercial trade datasets are live. Their scope is limited to the source programs described here and in the availability table.

Illinois — IDFPR roofing contractor licenses
Coverage includes roofing contractor credentials and historical source statuses, with qualifying-party credentials excluded. Source fields include license number, business name, dates, city/state/ZIP, limited or unlimited qualifier, and disciplinary indicators; street address, phone, bond, and workers’ compensation details are not supplied. The official bulk dataset updates weekly; StateLicense polls Monday at 6:00 AM Pacific. Identified historical records are included; unidentified source rows are omitted and some numbered records lack holder names.
IDFPR Professional Licensing data
Illinois source data: IDFPR Professional Licensing, made available under the Open Database License (ODbL). StateLicense filters roofing contractor credentials and consolidates disciplinary transaction rows.
Ohio — OCILB commercial trade roster
Coverage includes electrical, HVAC, hydronics, plumbing, and refrigeration licenses from the active-status roster. Source fields include the individual licensee, trade-prefixed credential, company association, status, expiration, and available company contact details. General and residential contractor coverage and adverse-status history are outside this feed. StateLicense polls Monday at 6:20 AM Pacific; this is not a publisher update guarantee. ESCROW/status conflicts are unconfirmed across every association for the affected credential.
OCILB official roster service

Arkansas roster — live, status not reported

Arkansas contractor-roster lookup is live from manually imported snapshots. The scope covers numbered CLB commercial, residential-builder, and home-improvement or remodeler licenses; registrations and numberless entries are excluded. The roster does not report current status, so validity must be confirmed with the board.

Arkansas Contractors Licensing Board lookup

New Jersey and Colorado — live business registrations

New Jersey covers Consumer Affairs Home Improvement Business Contractor registrations. Colorado covers DORA EC electrical and PC plumbing contractor business registrations. These registrations do not establish individual trade qualifications or general-contractor authorization.

Historical and adverse records remain searchable. Reused New Jersey numbers and conditional or cannot-practice Colorado statuses require official confirmation. Review every returned holder and credential type. Regulatory-action presence is not proof of a final disciplinary finding.

New Jersey refreshes weekly on Monday at 7:20 AM Pacific; Colorado refreshes daily at 7:00 AM Pacific. These are polling schedules. source_updated_at is the verified acquisition date, not a source publication timestamp. Insurance, bond, phone, and unreported disclosure facts remain unavailable.

New Jersey registration lookupColorado contractor registration lookup

Explore authorities and rollout status

Use a focused lookup for an individual record, then move to the dashboard or API when you need a repeatable workflow.

Alaska contractor license API

Construction Contractors professional licenses from manual browser exports.

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Arkansas contractor roster API

Numbered CLB licenses from manual snapshots; current status is not reported.

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Arizona contractor license API

Active ROC posting-list snapshots with legal and DBA identity.

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California contractor license API

CSLB status, classifications, bond, and workers’ compensation data.

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Colorado contractor registration API

DORA EC electrical and PC plumbing contractor business registrations.

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New Jersey home improvement API

Consumer Affairs home improvement business registrations, including historical and adverse records.

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Connecticut contractor API

DCP HIC and NHC registrations and MCO licenses, including adverse history.

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Delaware contractor business-license API

Resident and nonresident contractor business licenses; not trade qualifications.

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Florida contractor license API

Construction and electrical contractor records from Florida DBPR.

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Iowa contractor registration API

Current DIAL construction contractor registrations.

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Minnesota contractor API

DLI residential business licenses and contractor registrations.

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Illinois roofing contractor API

IDFPR roofing contractor credentials; qualifying-party credentials excluded.

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Ohio OCILB commercial trade API

Five commercial trades with individual licensees and company associations.

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NYC contractor license API

New York City DCWP and DOB licenses.

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New York public-work registry API

Statewide NYSDOL registration for covered public work and Article 8 projects.

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Oregon contractor license API

Active statewide CCB endorsements with daily source refreshes.

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Tennessee contractor license API

Board contractor licenses from manually exported dashboard snapshots.

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Texas contractor license API

Six regulated contractor categories from Texas TDLR.

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Virginia contractor license API

Current DPOR Class A, B, C, and temporary contractor business licenses.

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Washington contractor license API

Construction, electrical, plumbing, and elevator records from L&I.

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Free state and city lookups

Alaska CBPL lookup →Arkansas CLB roster lookup →Arizona ROC lookup →California CSLB lookup →Connecticut DCP lookup →Delaware business-license lookup →Florida DBPR search →Iowa DIAL registration lookup →Minnesota DLI lookup →Tennessee Board lookup →Texas TDLR electrical lookup →Washington L&I lookup →Oregon CCB lookup →Virginia DPOR lookup →NYC DCWP HIC lookup →New York public-work registry lookup →

How records are handled

Source attribution

Live records come from Alaska CBPL, Arkansas CLB, Arizona ROC, California CSLB, Colorado DORA, Connecticut DCP, Delaware Division of Revenue, Florida DBPR, Illinois IDFPR, Iowa DIAL, Minnesota DLI, New Jersey Consumer Affairs, New York City DCWP or DOB, New York State DOL, Ohio OCILB, Oregon CCB, Tennessee BLC, Texas TDLR, Virginia DPOR, or Washington L&I. StateLicense returns the authority, credential kind, license type, and jurisdiction when the source provides them.

Freshness

California, Colorado electrical/plumbing registrations, Connecticut, Minnesota, New York State public work, Oregon, Texas, Washington, and NYC DOB refresh daily. Delaware, Florida, Illinois roofing, Iowa, New Jersey home improvement, Ohio commercial trades, Virginia, and NYC DCWP refresh weekly. Alaska, Arkansas, Arizona, and Tennessee use manual snapshot imports; Alaska and Tennessee have no source update timestamp, Arkansas does not report current status, and Arizona is active-only. Use source_updated_at and last_updated to evaluate a specific record.

Normalization

Source labels and formats are mapped to stable API fields. A missing field is returned as unavailable rather than inferred.

Human review

Automated checks should route identity mismatches, adverse status, incomplete records, and high-risk decisions to a qualified reviewer.

Choose how you want to verify

Check individual records in the public lookup, use the web dashboard for ongoing manual work, or create a live API key to integrate verification into your product.

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