How to Verify a Contractor License Before Hiring

Why License Verification Matters

Hiring an unlicensed contractor is one of the most common and costly mistakes homeowners make. According to the National Association of State Contractors Licensing Agencies, unlicensed contracting costs American consumers billions of dollars annually in fraud, substandard work, and unresolved disputes. When you hire a licensed contractor, you gain access to state-backed consumer protections — including recovery funds, bond claims, and formal complaint processes — that simply do not exist when you hire someone operating outside the system.

A valid license confirms that the contractor has passed competency exams, carries minimum insurance and bonding, and is subject to oversight by a state regulatory board. Without a license, you have no guarantee of any of these protections, and your legal recourse if something goes wrong is significantly more limited and expensive.

Step 1: Get the Contractor's License Number

Before you can verify anything, you need the contractor's license number. Most states require licensed contractors to display their license number on business cards, estimates, contracts, advertisements, and vehicle signage. If a contractor cannot or will not provide a license number when asked, treat that as a serious red flag.

You can also look up contractors by name or business name. On LicensedCheck.com, simply enter the contractor's name in the search bar and select the appropriate state. You will see all matching license records, including current and historical statuses. This is useful when you have a contractor's name from a referral or advertisement but not their license number.

Step 2: Confirm the License Is Currently Active

A license number alone is not enough — the license must be currently active. Contractors can have expired, suspended, revoked, or inactive licenses that are still on record. An expired license may simply mean the contractor forgot to renew, but a suspended or revoked license often indicates serious violations like fraud, substandard work, or failure to carry required insurance.

When you search for a contractor on LicensedCheck, the license status is prominently displayed. Look for "Active" status. Anything else — expired, inactive, suspended, revoked — means the contractor is not currently authorized to perform licensed work in that state. Some states also distinguish between "Active" and "Active - Good Standing," so pay attention to the specific language.

Step 3: Verify the License Type Matches Your Project

Most states use a classification system that specifies what type of work a contractor is authorized to perform. A plumbing license does not authorize electrical work, and a residential license may not cover commercial projects. When you verify a license, make sure the classification or license type matches the scope of your project.

For example, California uses over 40 specialty classifications (C-10 for electrical, C-36 for plumbing, C-39 for roofing). Arizona uses dual prefixes — "R" for residential and "C" for commercial. Texas licenses electricians and HVAC technicians at the state level through TDLR but does not require a state-level general contractor license. Each state is different, which is why our state-specific verification guides explain exactly what to look for.

Step 4: Check for Complaints and Disciplinary Actions

A clean license status does not tell the whole story. Many state licensing boards maintain public records of complaints, investigations, and disciplinary actions against licensed contractors. A contractor with an active license but a history of consumer complaints may still be a risky hire.

Most state licensing board websites allow you to search for complaints and disciplinary history. Our state verification guides include direct links to each state's complaint database where available. When reviewing complaints, consider the number and recency of complaints, whether complaints were substantiated by the board, whether the contractor resolved the issues, and the nature of the complaints (financial disputes versus safety violations are very different).

Step 5: Verify Insurance and Bonding

Licensed contractors are typically required to carry general liability insurance and a surety bond. Some states also require workers' compensation insurance if the contractor has employees. These protections exist to compensate you if the contractor causes property damage, performs defective work, or abandons your project.

Insurance and bond requirements vary significantly by state. California requires a $25,000 contractor bond. Arizona requires bond amounts based on the license classification. Some states require proof of insurance as a condition of license renewal, while others require it only at initial licensing. Ask the contractor for a current certificate of insurance and verify it directly with the insurer — policies can lapse between licensing renewals.

What to Do If a Contractor Is Not Licensed

If your verification reveals that a contractor is not licensed, unlicensed, or has a suspended or revoked license, do not hire them. In most states, performing contracting work without a required license is a misdemeanor or even a felony, depending on the circumstances and dollar amounts involved.

If you have already hired and paid an unlicensed contractor, you may have legal recourse. Several states — including California — have laws that prevent unlicensed contractors from enforcing contracts or collecting payment for work performed without a license. Consult with a local attorney and file a complaint with your state licensing board and local district attorney's office.

You can report unlicensed contracting activity to your state licensing board. Most boards actively investigate these reports and can impose fines, issue cease-and-desist orders, and refer cases for criminal prosecution.