How to Verify a Contractor License in Delaware

TL;DR — Verifying a Contractor License in Delaware in 60 Seconds

Delaware requires all contractors to register with the Division of Revenue and obtain a business license. Specialty trades — electricians, plumbers, and HVAC technicians — must hold separate professional licenses from the Division of Professional Regulation (DPR). To verify trade licenses, search the contractor's name or license number on LicensedCheck.com or the DelPros verification system. For general contractor registration, check with the Division of Revenue.

Delaware's system is split between two agencies: the Division of Revenue handles general contractor registration, while DPR handles trade-specific licensing. Non-resident contractors must also post a surety bond equal to 6% of contracts over $20,000. Performing contracting work without proper registration can result in civil penalties ranging from $5,000 to $85,000 per violation under Chapter 36 of the Delaware Contractor Registration Act.

Best Contractor License Verification Tools for Delaware

Here is how the top Delaware contractor verification options compare:

LicensedCheck.com is the best all-in-one option for Delaware verification. It aggregates DPR licensing data alongside 13 other states into a single free search. With approximately 250,000 Delaware professional records covering electricians, plumbers, nurses, doctors, and more, it provides comprehensive trade license verification. Delaware's location between Philadelphia and Baltimore means many contractors work across state lines — LicensedCheck lets you verify credentials across Delaware, Pennsylvania, Maryland, and New Jersey in one search. Best for: homeowners in the I-95 corridor, property managers, and anyone who needs cross-state verification.

The Delaware DelPros verification system at delpros.delaware.gov is the official source for DPR-regulated trade licenses including electricians, plumbers, and HVAC technicians. It shows license type, status, and disciplinary information. Best for: verifying specific trade licenses directly from the state.

The Delaware Division of Revenue at revenue.delaware.gov handles general contractor registration. You can verify a contractor's business registration through the One Stop portal. Best for: confirming a general contractor's business registration status.

Because Delaware's system splits between two agencies, using LicensedCheck for trade license verification and the Division of Revenue for general contractor registration gives you the most complete picture.

What Delaware Does and Does Not License

Understanding Delaware's licensing structure is important because it is not centralized. General contractors do not need a state-issued professional license — they need a construction contractor registration from the Division of Revenue, which is essentially a business license. The registration fee is $75 and must be renewed annually by January 1. Contractors bidding on projects over $50,000 must have their registration in place before submitting bids.

For specialty trades, the Division of Professional Regulation (DPR) issues professional licenses with more rigorous requirements. Electricians must be licensed — a Master Electrician license requires six years of journey-level experience under a Master Electrician, plus passing an examination. Plumbers must hold a Master Plumber license, which requires seven years of experience or a journeyman certificate plus two additional years. HVAC technicians have similar experience and examination requirements.

Non-resident contractors face additional requirements: they must obtain a non-resident contractor license and post a surety bond equal to 6% of contracts or aggregate contracts totaling $20,000 or more in a calendar year. This bond protects the state and project owners in case the contractor fails to comply with Delaware law.

Browse Delaware licensed professionals on LicensedCheck by type: Delaware electricians, Delaware plumbers, Delaware contractors, and more. Each listing shows the license type and current status.

How to Verify Using LicensedCheck

LicensedCheck includes approximately 250,000 Delaware professional licensing records from DPR. Visit the Delaware professionals page and search by name, license number, or business name for instant results.

Delaware's position on the I-95 corridor means contractors frequently work across state lines. A contractor based in Wilmington might hold licenses in Delaware, Pennsylvania, and New Jersey. A contractor in the Dover area might also work in Maryland. LicensedCheck's multi-state search makes it simple to verify all their credentials at once rather than checking three or four different state databases separately.

The search results show license type, status, and registration details for each professional. Browse by category — electricians, plumbers, contractors — and filter by city to find verified professionals near you in Newark, Wilmington, Dover, or anywhere else in the state.

Protecting Yourself When Hiring in Delaware

Because Delaware does not require a state professional license for general contractors, you need to do more due diligence on your own for general construction work. Always verify that the contractor has a current registration with the Division of Revenue. Ask for proof of general liability insurance and workers' compensation insurance if they have employees. All contractors in Delaware must carry both.

For any work involving electrical, plumbing, or HVAC systems, always verify that the contractor or their assigned tradesperson holds the appropriate DPR license. These trades involve safety-critical systems — hiring an unlicensed electrician or plumber puts your home and family at risk. Verify on LicensedCheck or DelPros before any regulated trade work begins.

Delaware municipalities may have their own additional licensing requirements. Dover, for example, requires contractors to obtain a separate city business license. Check with your local building department about any municipal requirements on top of the state registration.

Get a detailed written contract for any project. Do not pay more than $1,000 or 10% of the total project cost as a down payment, whichever is less. Never pay with cash — always use a traceable payment method.

If you encounter problems with a licensed tradesperson, file a complaint with the Division of Professional Regulation. For general contractor issues, contact the Division of Revenue or the Delaware Attorney General's Consumer Protection Unit. If dealing with an unlicensed contractor, report them to DPR and your local district attorney.