Delaware Contractor License Requirements: Complete 2026 Guide

Delaware takes a unique approach to contractor regulation. Unlike many states that require a single statewide contractor license, Delaware operates a multi-layered system involving business registration with the Division of Revenue, contractor registration with the Department of Labor's Office of Contractor Registration, and trade-specific professional licensing through the Division of Professional Regulation (DPR).

General contractors in Delaware do not need to pass a trade exam or hold a professional license from the state. However, every contractor performing construction services must register with the Department of Labor under the Delaware Contractor Registration Act (19 Del.C. Chapter 36) and obtain a business license from the Division of Revenue. Specialty trade contractors—electricians, plumbers, and HVAC technicians—face additional professional licensing requirements including examinations and supervised experience.

Penalties for working without proper registration are steep: knowing violations carry civil penalties of $5,000 to $85,000 per violation. This guide covers every requirement you need to know to operate legally in Delaware.

Types of Contractor Licenses and Registrations

Delaware's contractor regulatory framework has three distinct layers. Understanding which ones apply to your business is critical before you begin any work in the state.

1. Contractor Registration (Department of Labor)

Under the Delaware Contractor Registration Act (19 Del.C. Chapter 36), all businesses performing "construction services" must register with the Department of Labor's Office of Contractor Registration before work begins. This applies to general contractors, subcontractors, and specialty trade contractors alike. There is no exam, experience, or education requirement for this registration.

Registration categories include:

• Private Construction Only — for contractors working exclusively on private-sector projects
• Public Construction Only — for contractors bidding on state or government-funded contracts
• Both Public and Private Construction — for contractors working on all project types

2. Business License (Division of Revenue)

Every contractor operating in Delaware must register with and obtain a business license from the Delaware Division of Revenue. The Division offers separate registration packages for resident and non-resident contractors. This license also enrolls you in Delaware's gross receipts tax system.

3. Professional Trade Licenses (Division of Professional Regulation)

Specialty trade contractors must hold additional professional licenses issued by the Division of Professional Regulation (DPR). These require examinations and documented experience. The regulated trades include:

4. County and Municipal Licenses

In addition to state-level requirements, individual counties and municipalities may impose their own contractor licensing. New Castle County, for example, has a separate contractor licensing program. Kent County and Sussex County administer building permits independently. Always check with local jurisdictions where you plan to work.

Licensing and Registration Requirements

Contractor Registration (Department of Labor)

The contractor registration through the Department of Labor has no experience, education, or exam requirements. You must provide:

• Federal Employer Identification Number (FEIN), ITIN, or Social Security Number
• NAICS code(s) for your business activities
• Business name, address, and contact information
• Business entity type and Delaware business license number
• Delaware registered agent information (required for out-of-state businesses)
• Contact details for all individuals with a financial interest in the business
• Proof of workers' compensation insurance
• Delaware unemployment insurance (SUI) number
• An OSHA-compliant safety plan
• Disclosure of any labor law violations or fraud convictions within the past two years
• Valid payment method for fees

Electrician License Requirements

All electrician licenses are issued through the DPR Board of Electrical Examiners. Requirements by license type:

Master Electrician Special covers specific specialty areas: Electric Signs, Elevators, HVAC, Primary Distribution Systems, Pools, and Refrigeration. A separate application is required for each specialty.

Plumber License Requirements

Master Plumber licenses are issued through the DPR Board of Plumbing, HVAC & Refrigeration Examiners.

• With a journeyman certificate (from a federally-approved apprenticeship): at least 2 years of work experience under a master licensee after receiving the certificate
• Without a journeyman certificate: at least 7 years of work experience under the supervision of a master licensee

Applicants without a journeyman certificate must pass the Apprenticeship By-Pass Exam with a minimum score of 70% through a Delaware apprenticeship school before sitting for the master plumber examination.

HVACR License Requirements

HVACR licenses are also issued through the Board of Plumbing, HVAC & Refrigeration Examiners.

Master HVACR — authorizes the design, installation, service, repair, and modification of heating, air conditioning, refrigeration, ventilation, process cooling systems, and gas piping.

Master HVACR Restricted — limited to one specialty area: Heating (Forced Air or Hydronic), Commercial Hood Systems, Refrigeration, Air Conditioning, or Gas Piping.

Experience requirements mirror the plumber track:

• With journeyman certificate: 2+ years supervised experience after certificate
• Without journeyman certificate: 7+ years supervised experience, plus passing the Apprenticeship By-Pass Exam at 70% minimum

CFC Certification is required for Master HVACR applicants and for Master HVACR Restricted applicants in the Refrigeration or Air Conditioning specialties.

Application Process

Step 1: Register Your Business with the Division of Revenue

Start at the Delaware One Stop portal. The Combined Registration Application (CRA) handles both business registration and licensing in a single form. You will select either the Resident Contractors Package or the Non-Resident Contractors Package. After approval and fee payment, you receive your business license and tax guidance materials.

Step 2: Register with the Department of Labor

Submit your contractor registration application through the Office of Contractor Registration. You will need all the documentation listed in the requirements section above, including proof of workers' compensation insurance, your OSHA safety plan, and your Delaware business license number. Registration must be completed before any construction work begins.

Step 3: Obtain Trade-Specific Licenses (If Applicable)

If your work involves electrical, plumbing, or HVACR services, apply for the appropriate professional license through DELPROS (Delaware Professional Regulation Online Services). You have 6 months from the time you start an application to complete it and submit all required documentation.

Required documents for trade license applications typically include:

• State licensure verification from every jurisdiction where you hold or have held a license
• Employment verification forms completed by supervisors, or W-2s/Schedule C/affidavits proving work experience
• Official transcripts (if using education to substitute for experience)
• Proof of general liability insurance (minimum $300,000 for electrical licenses)
• CFC Certification card (for HVACR applicants where applicable)

Step 4: File with the Department of Labor (UC-1 Form)

File Form UC-1 with the Delaware Department of Labor to register for unemployment insurance. This is required regardless of whether you have employees.

Step 5: Obtain Local Permits and Licenses

Check with the county and municipality where your project is located. New Castle County, Kent County, and Sussex County each have their own permitting offices, and some municipalities (like Wilmington) have separate business license requirements.

Examination Requirements

General Contractors

Delaware does not require a trade examination for general contractors. The contractor registration with the Department of Labor and the business license from the Division of Revenue have no exam components.

Electrician Examinations

All electrician license types except Apprentice require passing an examination. The exam is administered by the Board of Electrical Examiners. Applicants applying by reciprocity from states with substantially similar requirements (Maryland and New Jersey) may be exempt from the exam.

Plumber Examinations

Master Plumber applicants must pass the board-administered examination. Applicants without a journeyman certificate must first pass the Apprenticeship By-Pass Exam through Delaware apprenticeship schools with a minimum passing score of 70% before they can sit for the master exam.

HVACR Examinations

Master HVACR and Master HVACR Restricted applicants must pass the board examination. As with plumbing, applicants without a journeyman certificate must first pass the Apprenticeship By-Pass Exam at 70% minimum.

Contact the relevant board directly for current exam scheduling, format details, and study resources:

• Board of Electrical Examiners: dpr.delaware.gov/boards/electrician
• Board of Plumbing, HVAC & Refrigeration Examiners: dpr.delaware.gov/boards/plumbers

License Fees and Costs

Contractor Registration Fees (Department of Labor)

Two-year discounted registration is available only to contractors who have maintained compliance during their initial registration period. All fees are non-refundable. Contact the Office of Contractor Registration at 302-430-7739 for details.

Business License Fee (Division of Revenue)

The annual business license fee is $75. This may be prorated for first-year registrations. In addition, contractors must pay the Delaware gross receipts tax at a rate of 0.6537% on taxable gross receipts from construction services. Returns are filed monthly (due by the 20th of the following month) or quarterly depending on your filing frequency. A deduction is allowed for payments made to subcontractors.

Electrician License Fees

Source: DPR Electrician Fee Schedule. Renewal fees vary and are communicated at the time of renewal. All fees are processed through DELPROS and are non-refundable.

Plumber and HVACR License Fees

Other DPR Service Fees

Insurance and Bond Requirements

Workers' Compensation Insurance

Delaware law (Title 19, Chapter 23) requires all employers with one or more employees to carry workers' compensation insurance. This is a prerequisite for contractor registration with the Department of Labor.

• Sole proprietors and partners without employees are not required to carry workers' comp but must submit the appropriate exemption form from the Division of Industrial Affairs.
• Construction industry employers face stricter scrutiny—Delaware law provides that workers in the construction industry cannot be classified as independent contractors to avoid coverage requirements.
• Subcontractor liability: If you fail to verify a subcontractor's workers' comp coverage, you may be held liable for their injured workers' compensation claims.

Contact the Office of Workers' Compensation at 302-761-8200 for questions about coverage requirements.

General Liability Insurance

While Delaware does not mandate general liability insurance for all contractors at the state level, it is required for certain professional licenses:

• Electricians (Master, Master Special, Limited, Limited Special): minimum $300,000 general liability insurance required
• Journeyperson and Apprentice electricians are exempt from the insurance requirement

In practice, most project owners, general contractors, and local jurisdictions will require proof of general liability coverage regardless of state mandates.

Surety Bond Requirements (Non-Resident Contractors)

Under Delaware Code Title 30, Chapter 3, non-resident contractors must file a surety bond with the Division of Revenue before beginning construction work in Delaware. The bond requirements are:

• Bond amount: Equal to 6% of the contract price
• Trigger threshold: Required when a single contract is $20,000 or more, or when the aggregate of two or more contracts in a calendar year totals $20,000 or more
• Surety company: Must be authorized to operate in Delaware
• Alternatives accepted: Cash bond, irrevocable letter of credit

Bond premiums typically range from 1% to 10% of the required bond amount, depending on the applicant's credit and financial history. For bonding questions, contact Jennifer Callahan at the Division of Revenue: 302-577-8167 or Jennifer.callahan@delaware.gov.

License Renewal

Contractor Registration Renewal (Department of Labor)

• Renewal window: Available within 90 days before your certificate expires
• One-year renewal fees: $200 (private), $300 (public), $500 (both)
• Two-year renewal: Available at a discounted rate to contractors who renew before expiration and have maintained compliance
• Continuing education: None required for the general contractor registration

Business License Renewal (Division of Revenue)

The $75 annual business license fee must be renewed each year. Continue filing gross receipts tax returns on the required schedule (monthly or quarterly).

Electrician License Renewal

• Renewal period: Every 2 years, expiring June 30 of even-numbered years
• Continuing education:
  • Master and Residential Electricians: 10 hours per renewal period
  • Journeyperson Electricians: 5 hours per renewal period
• Insurance: Active Master, Limited, and Residential electricians must maintain liability insurance. Journeyperson and Apprentice licenses are exempt.
• Late renewal: Available up to one year after expiration with a late fee equal to 50% of the renewal fee. Practicing on an expired license is illegal.
• Renewal portal: DELPROS

Plumber and HVACR License Renewal

• Renewal period: Every 2 years, expiring December 31 of even-numbered years
• Continuing education:
  • Master Plumbers and HVACR licensees: 10 hours per renewal period
  • Journeyperson Plumbers: 5 hours per renewal period
• Late renewal: Late fee of 50% of the renewal amount applies after expiration

Reciprocity with Other States

Delaware does not participate in the NASCLA (National Association of State Contractors Licensing Agencies) accredited exam program. Since Delaware does not require a general contractor license, there is no general contractor reciprocity framework.

However, Delaware does offer reciprocity for specialty trade licenses through the Division of Professional Regulation:

Electrician Reciprocity

Delaware evaluates electrical license reciprocity on a case-by-case basis. Applicants from states with "substantially similar" licensing requirements may be exempt from the exam. Maryland and New Jersey are specifically recognized as having substantially similar standards.

Plumber Reciprocity

Delaware offers plumber reciprocity with varying requirements depending on the state:

• No experience documentation required: Connecticut, Iowa, Maryland
• 7 years post-licensure experience required: Alabama, Arkansas, District of Columbia, Florida, Georgia, Michigan, New Hampshire, New Jersey, North Carolina, Ohio, Rhode Island, South Carolina, Virginia, West Virginia
• All other states: The Board evaluates on a case-by-case basis; you must submit that state's laws and regulations for review

HVACR Reciprocity

HVACR reciprocity follows the same framework as plumbing:

• No experience needed: Connecticut, Maryland
• 7 years post-licensure experience: Same 14 states listed above for plumbing
• Other states: Board evaluation required

How to Verify a Contractor's License

Delaware provides two primary verification tools:

Contractor Registration Lookup (Department of Labor)

Search the Delaware Registered Construction Contractors Registry to verify that a contractor has properly registered with the Department of Labor. You can search by:

• Contractor name
• ZIP code
• Certification number
• NAICS code
• Industry

If a contractor does not appear, their registration may be expired, suspended, revoked, or they may have never applied. Contact the Department of Labor at 302-430-7739 for status verification.

Professional License Lookup (Division of Professional Regulation)

Verify electrician, plumber, and HVACR licenses through the DELPROS License Verification portal. This confirms whether a trade professional holds an active license issued by the Division of Professional Regulation.

Contact Information

Penalties for Working Without a License

Contractor Registration Act Violations (19 Del.C. Chapter 36)

Under Section 3609 of the Delaware Contractor Registration Act, penalties for performing construction work without proper registration include:

• Knowing violations: Civil penalties of $5,000 to $85,000 per violation
• Non-knowing violations: Civil penalties of up to $1,000 per violation

The Department of Labor may also bring a civil action for injunctive relief in the Court of Chancery to stop unregistered contractors from working (Section 3610). No bond or filing fee is required for the Department to seek this relief.

Workplace Fraud Act Violations (19 Del.C. Chapter 35)

The Workplace Fraud Act works alongside the Contractor Registration Act and imposes severe penalties for misclassifying employees as independent contractors:

• Improper classification: $5,000 to $20,000 per violation (Section 3505(a))
• Retaliation against complainants: $20,000 to $50,000 per violation (Section 3505(c))
• Fraudulent entity formation to evade detection: up to $20,000 (Section 3505(d))
• Failure to produce records: up to $500 per day past the 30-day deadline (Section 3505(b))
• Second violation within 2 years: $20,000 per improperly classified employee, plus potential 5-year debarment from public contracts (Section 3505(h))

Joint and several liability: General contractors are jointly and severally liable for a subcontractor's penalties and restitution under the Workplace Fraud Act.

Unlicensed Professional Practice (Title 24)

Under 24 Del.C. Section 2825, performing regulated trade work (electrical, plumbing, HVACR) without the required professional license carries:

• A fine of up to $5,000
• A cease and desist order with a specified compliance date
• Violation of a cease and desist order: fines up to $5,000 per day that the violation continues

Frequently Asked Questions

Does Delaware require a general contractor license?

No. Delaware does not issue a statewide general contractor license. However, all contractors must register with the Department of Labor's Office of Contractor Registration and obtain a business license from the Division of Revenue. Specialty trades (electrical, plumbing, HVACR) require additional professional licenses.

How much does it cost to become a registered contractor in Delaware?

For the Department of Labor registration: $200/year for private-only work, $300/year for public contracts, or $500/year for both. Add the $75 annual business license fee from the Division of Revenue. Trade license fees range from $79 (Apprentice Electrician) to $203 (Master Electrician).

Do I need a bond to work as a contractor in Delaware?

Only if you are a non-resident contractor. Non-residents must post a surety bond equal to 6% of the contract price when a single contract (or the aggregate of contracts in a calendar year) reaches $20,000 or more. Resident contractors are not required to post a bond at the state level, though local jurisdictions may have their own requirements.

Is there an exam for general contractors in Delaware?

No. The contractor registration has no exam requirement. Only specialty trade licenses (electrician, plumber, HVACR) require passing examinations administered through the Division of Professional Regulation.

What insurance do I need as a Delaware contractor?

At minimum, employers must carry workers' compensation insurance. Sole proprietors without employees must file an exemption form. Licensed electricians must carry at least $300,000 in general liability insurance. While general liability insurance is not mandated for all contractors at the state level, it is effectively required in practice by project owners and local jurisdictions.

How do I check if a contractor is properly licensed in Delaware?

Use the Registered Construction Contractors Registry to check Department of Labor registration, and the DELPROS License Verification portal to verify trade licenses. You can also call the Office of Contractor Registration at 302-430-7739.

Conclusion

Delaware's contractor licensing system is straightforward for general contractors—register with the Department of Labor, get your business license from the Division of Revenue, and maintain workers' compensation coverage. The process becomes more involved for specialty trades, where years of supervised experience and board examinations are required.

The key steps for every contractor working in Delaware:

1. Register with the Office of Contractor Registration (Department of Labor)
2. Obtain a business license from the Division of Revenue
3. Secure workers' compensation insurance (or file an exemption)
4. If non-resident, file a surety bond with the Division of Revenue
5. For specialty trades, apply for professional licenses through DELPROS
6. Check local county and municipal requirements for additional licenses or permits

For the most current information, contact the Office of Contractor Registration at 302-430-7739 or the Division of Professional Regulation at 302-744-4500.