How General Contractors Verify Subs Are Licensed and Insured?

Published: November 7, 2025

As a general contractor or a remodeling business owner, your subcontractors and trade partners reflect directly on your operation. One uninsured worker injury or an unlicensed trade on-site can create liability, undermine insurance coverage, and damage your reputation.

a hand holding blue umbrella over house figurines on a ramp of stacked coins

To check if a contractor is licensed and insured, collect their license number and Certificate of Insurance (COI), verify active status and the correct classification on your state or local portal, call the insurer to confirm current liability (and, if applicable, workers’ comp), and confirm any required bond.

This guide walks you through each step, showing how to integrate this verification process into a repeatable and trackable workflow.

Search for Qualified Contractors 

The way you source subcontractors can influence every part of a project. Unqualified or unverified trades often cause delays, rework, or compliance issues that could have been avoided at the hiring stage. 

Start With Reliable Sources

The first step to a lower-risk partnership is sourcing from reputable channels. Instead of open marketplaces or casual referrals, focus on networks that maintain accountability.

  • State licensing databases often list contractors in good standing and specify license classifications.
  • Professional associations (the National Association of Home Builders (NAHB), the Associated General Contractors of America (AGC), or state builders’ guilds) publish member directories of compliant contractors. However, membership doesn’t guarantee licensing or the absence of complaints. 
  • Local permit offices can show which contractors frequently pull permits for similar projects, a good indicator of active and compliant professionals. 
  • Peer referrals are still valuable, but verify every credential before contracting.

Build and Maintain an Internal Compliance List

Set up an “Approved Subcontractor Register” in your CRM, contractor software tools, or shared drive. Review the list quarterly and automate reminders for expiring documents to ensure that no subcontractor works with expired credentials. Make sure to include the following fields:

  • Company name, trade, and contact details
  • License number, classification, and expiration date
  • Insurance carrier, policy number, and renewal date
  • Bond details (if applicable)
  • Notes on past project performance 

Verify Licenses and Insurance 

A claim of being “licensed and insured” means little without proof. Verification should happen before a contract is signed, not after work begins.

Step 1: Collect and Review Documentation 

Request digital copies of these documents from each subcontractor and ensure all documents list the same legal business name that appears on the bid or contract: 

  1. State contractor license registration
  2. Certificate of Insurance (COI) for general liability
  3. Workers’ compensation certificate, if they employ others
  4. Surety bond and bond number, if applicable

Step 2: Confirm the License

Use official verification portals to check and confirm the details, not screenshots or PDFs. Additionally, maintain a verification log that records the date, source, and findings. Store this with your contract files for auditing or dispute resolution. Always check for:

  • Active status (not expired, suspended, or revoked)
  • Correct classification 
  • Confirming that the business name aligns with the license holder’s name
  • No outstanding disciplinary actions

Note: Visibility varies by state.

Step 3: Validate Insurance Coverage

Contact the insurance provider listed on the COI to confirm the policy is active and meets general contractor insurance requirements for the type of work being performed. If a subcontractor operates without employees, confirm your state’s rules on workers’ compensation exemptions. In general, you should pay attention to:

  • Coverage limits 
  • Expiration date and renewal cycle 
  • Exclusions relevant to the trade (for example, roofing height limits, trenching depth restrictions, or subcontractor exclusions)
  • List your firm as the certificate holder and, if you require notice, require a notice‑of‑cancellation endorsement on the subcontractor’s policy (and obtain the endorsement, not just a COI).

Step 4: Verify Bonding

For public projects or large private jobs, bonding provides a layer of security. For public projects or large private jobs, performance and payment bonds provide remedies if the contractor defaults.

Ask for the bond number, issuing company, and coverage amount. Then contact the surety company to verify it is valid. Keep a copy of the confirmation for your compliance files.

General Contractor License Lookup by State

Want a head start on checking if a contractor is licensed and insured? Every state has its own licensing authority, and verification requirements vary. Some issue statewide licenses, while others delegate authority to cities or counties. 

Using an official state contractor lookup portal reduces mistakes and helps ensure compliance across multiple job locations.

For multi-state contractors, maintain a reference sheet linking each verification portal. Here are some selected state portals offered as examples.

Western States

  • California: Visit the Contractors State License Board (CSLB) to verify a general contractor’s license in California. Search the contractor lookup by license number or company name. The site lists classifications, bond status, and disciplinary history. You can also confirm workers’ compensation coverage.
  • Nevada: Use the Nevada State Contractors Board. Verify a contractor’s license limits, specialties, and monetary thresholds, which determine the value of projects they can legally perform.
  • Arizona: Verify through the Arizona Registrar of Contractors. You can see past complaints and bonding information.

Southern States

  • Texas: Use the TDLR License Search. Note that general contractors are not licensed at the state level, but electricians and HVAC technicians are. Always check at the city level for general building permits.
  • Florida: To validate a Florida general contractor license, search the Department of Business and Professional Regulation (DBPR). The site confirms active licenses, classifications, and complaint records.
  • Georgia: Use the Professional Licensing Boards Division. It provides license verification for residential and general contractors separately.

Northern and Midwest States

  • Illinois: For roofing, visit the Illinois Department of Financial and Professional Regulation (IDFPR). For plumbing, verify a contractor through the Illinois Department of Public Health (IDPH). General contractor requirements are handled at the municipal level.
  • Ohio: Use Ohio eLicense for mechanical, HVAC, electrical, and plumbing contractors. General contracting requirements depend on municipal jurisdiction.
  • Minnesota: Search the Department of Labor and Industry. This contractor lookup site lists residential building contractor licenses, required insurance, and renewal dates.

Northeastern States

  • Massachusetts: Check the Home Improvement Contractor Registration Lookup. The site shows active registrations and any administrative actions. For structural or new-construction work, verify a Construction Supervisor License (CSL) issued by the Board of Building Regulations and Standards (BBRS)
  • New York: There is no statewide general contractor license. You must check with the city or county, such as the NYC Department of Consumer and Worker Protection (DCWP). In NYC, General Contractors register with DOB; home improvement contractors are licensed by DCWP.
  • Pennsylvania: There’s no statewide general contractor license. Home Improvement Contractors register under the PA Office of Attorney General (OAG) per the Home Improvement Consumer Protection Act (HICPA). 

Additional States and Territories

The Importance of Insurance and Bonding

Even with skilled teams and solid project management, construction work carries unavoidable risks. Equipment failures, site accidents, and property damage can happen without warning, and when they do, responsibility must be clearly defined. 

a man in a button down shirt using an 'insurance' stamp

Verifying insurance and bonding is what keeps those accidents from becoming financial or legal setbacks. It ensures that accountability is distributed correctly and that your business remains protected in the event of the unexpected.

Why Licensing Alone Is Not Enough

A valid license confirms qualification, but it does not provide financial protection. If a subcontractor damages property or a worker is injured, you need proof of insurance and sometimes bonding to prevent claims against your own policies. 

Insurance verification ensures that liability and workers’ compensation risks are shifted appropriately. Without it, you can be responsible for medical bills, property repairs, and legal costs. 

How Insurance and Bonding Protect Your Business

Bonding is often required for public projects, but is increasingly used in private construction for high-value jobs. It adds a level of trust and resources if the subcontractor defaults.

Common Mistakes to Avoid

Make insurance and bonding verification part of your pre-job checklist, not an afterthought. Avoid some of the most common mistakes, including:

  • Accepting expired certificates. Always confirm renewal dates. 
  • Assuming one policy covers all trades. Roofing and excavation often require separate endorsements.
  • Ignoring subcontractor exclusions in general liability policies. 
  • Allowing uninsured day laborers on-site under a subcontractor’s supervision.

Pro Tips for Hiring Contractors

Once a contractor’s credentials are verified, the next step is keeping that process consistent. With multiple sites and deadlines, details can easily slip through the cracks. That’s why making verification a built-in workflow step ensures compliance stays reliable and scalable across every project.

Standardize Your Verification Process

Develop a subcontractor prequalification form. Include questions about licensing, insurance limits, safety record, and prior projects. Automate reminders for expiring documents.

Cross-Check Entity Names

To verify a contractor properly, ensure the name on the license, insurance policy, and contract is identical. If a subcontractor uses a “Doing Business As” (DBA) name, confirm it is legally registered under the same entity.

Review Insurance Exclusions and Limits

Align insurance requirements with the project size and risk profile. For example, multi-family construction may require umbrella coverage, while small residential remodels may not. If contractor financing is involved, lenders may also require proof of specific insurance coverage or active licensing before funds are released.

Include Compliance Clauses in Every Contract

Add language such as: “Subcontractors must maintain valid trade licensing, general liability insurance, and workers’ compensation coverage for the duration of this project. Proof of compliance must be provided before work begins and upon renewal.”

This grants you a contractual right to suspend work under the agreement, subject to any applicable laws.

Centralize Compliance Tracking

Use project management tools like Procore or Buildertrend to upload all documentation under each subcontractor’s profile. Tag documents with expiration dates and assign notifications to project admins.

Perform Spot Checks Mid-Project

Policies can be canceled mid-term. Periodic spot checks keep your risk exposure low. Designate a compliance coordinator to verify all active policies on a quarterly basis. 

Conclusion

Verifying that your subcontractors and trade partners are licensed, insured, and bonded protects your contracts, maintains your reputation, and ensures project continuity. 

Consistent compliance checks to prevent financial losses start with mastering how to check if a contractor is licensed and insured. They also streamline your audits and reduce administrative stress during claims or disputes. 

This article provides general information for contractors and should not be considered legal, insurance, or compliance advice. Licensing and insurance requirements vary by state, city, and project. Always verify details with official authorities and your counsel or insurance advisor.


Martha Pierson

Content CreatorMartha Pierson is a marketing strategist and business development expert based in Glendale, California. As a content creator for the Finturf blog, Martha shares her vast knowledge and experience with readers to help them build and sustain successful businesses. Her articles offer practical tips and actionable advice that entrepreneurs can implement immediately to achieve their goals. Martha also provides insightful analysis of current trends across different industries and offers expert guidance on how businesses can adapt to changing market conditions.

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