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Delaware - 2026 Contractor License Requirements
Official Delaware contractor license lookup information, agency details, and homeowner notes for verifying a contractor before hiring.
Official agency
DELPROS / Division of Professional Regulation
No single statewide general-contractor board; use DELPROS for state-regulated trades and check local licensing where applicable.
Visit official lookupAbout Delaware contractor licensing
Delaware does not use one broad statewide general contractor board for all home construction. Instead, homeowners often need a combination of state trade-license verification through DELPROS and local checking for business or contractor requirements, depending on where the property is located and what work is being done.
How licensing works in Delaware
Delaware's system is narrower than a full statewide GC license model. Regulated trades may appear in the Division of Professional Regulation's DELPROS system, while broad contractor oversight can depend more on local licensing, permits, and business compliance. For homeowners, that means the verification path changes with the project: a plumber or electrician should be checked through the state, but a general remodeler may also need city or county approval. New Castle County and municipal rules can matter a lot.
What to verify in Delaware
Use DELPROS to search the exact trade professional or company when the work includes a state-regulated occupation. Then confirm whether the city, town, or county where your home sits requires an additional contractor or business license for general work. Look for active status, expiration date, and any discipline in the state record. If the contractor cannot explain which state or local approvals apply, that is useful information by itself.
State-specific tips
- › For Wilmington-area work, verify local requirements separately instead of relying only on a DELPROS trade lookup.
- › If a company advertises full-service remodeling, ask which portions it self-performs under state trade credentials and which portions it subcontracts.
- › Match the county and municipality to the property before you check licensing; Delaware rules can shift over short distances.
- › For electrical, plumbing, and HVAC work, use the state portal even if the city also issues permits.
- › Keep a screenshot of any active DELPROS record you relied on in case the contractor later changes entities.
Free template
Delaware Contractor Agreement Template
Download a free homeowner-contractor agreement template built for Delaware law.
Frequently Asked Questions
- Does Delaware require general contractors to be licensed statewide?
- Delaware does not have a statewide general contractor's license in the traditional sense, but the Delaware Home Improvement Contractor Registration Act (6 Del. C. Chapter 25) requires contractors who perform home improvement work on residential property to register with the Delaware Division of Revenue before doing any work. Registration is not the same as a license — it confirms the contractor has filed with the state, not that they have passed a trade examination.
- How do I verify a contractor is legitimate in Delaware without a state license to check?
- Ask for the contractor's Delaware home improvement contractor registration number and verify it through the Delaware Division of Revenue. Confirm the contractor is registered as a business with the Delaware Division of Corporations at icis.corp.delaware.gov. Request certificates of general liability insurance and workers' compensation and verify both directly with the insurers. Check the Better Business Bureau and ask for references from recent Delaware projects.
- Are specialty trade contractors licensed in Delaware?
- Yes. Electrical contractors and electricians are licensed under Title 24, Chapter 14 of the Delaware Code through the Delaware Board of Electrical Examiners — verify at dpr.delaware.gov. Plumbing contractors are licensed under Title 24, Chapter 12 through the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration. HVAC contractors fall under the same board. Always verify specialty trade licenses at dpr.delaware.gov before hiring subcontractors.
- Does Delaware have a home improvement contractor registration requirement?
- Yes. Under 6 Del. C. §2502A, contractors performing home improvement work on residential property in Delaware must register with the Division of Revenue before beginning any work, regardless of project value. Registration requires proof of liability insurance and workers' compensation. An unregistered contractor cannot enforce a home improvement contract or collect payment in Delaware courts, and homeowners harmed by unregistered contractors have recourse through the Delaware Consumer Fraud Act (6 Del. C. §2513).
- Does my city or county require contractors to be licensed in Delaware?
- Some jurisdictions do. Wilmington has its own contractor licensing requirements through the Department of Licenses and Inspections (wilmingtonde.gov). Newark and Dover require permits and may have additional local contractor registration requirements — contact their respective building departments before hiring. Always check with your local building department, as state registration alone may not satisfy local requirements for permit-pulling or specialty work.
- What insurance should I require from a contractor in Delaware?
- Require general liability insurance (at least $500,000 per occurrence for most residential projects) and workers' compensation insurance. Workers' compensation is mandatory for employers with one or more employees under Delaware Code Title 19, Chapter 23. Without a statewide licensing board providing a safety net, you must verify insurance coverage directly with the insurer — a certificate of insurance alone does not confirm the policy is currently in force.
- Is a written contract required for home improvement work in Delaware?
- Yes. Under Delaware's Home Improvement Contractor Registration Act (6 Del. C. §2503), home improvement contracts valued at $100 or more must be in writing and signed by both parties. The contract must include the contractor's registration number, a description of the work, the total price, and a payment schedule. Contractors who fail to provide a written contract are in violation of the Act and may face civil penalties.
- What recourse do I have if a contractor does poor work or abandons my project in Delaware?
- File a complaint with the Delaware Department of Justice Consumer Protection Unit under the Delaware Consumer Fraud Act (6 Del. C. §2513) at ago.delaware.gov. The AG's office can pursue civil penalties and injunctions. You may also sue in Delaware Justice of the Peace Court (small claims up to $15,000) or Court of Common Pleas for larger amounts. Document all work deficiencies, communications, and payments in writing before filing any complaint.
- Where do I find contractor requirements for my city or county in Delaware?
- Delaware is a small state with primarily local building departments. Wilmington's Department of Licenses and Inspections is at wilmingtonde.gov; Newark's building department is at newarkde.gov; Dover's building permits and inspections department is at dover.de.gov. For New Castle County unincorporated areas, contact the Department of Land Use at newcastlede.gov. Sussex and Kent county residents should contact their county planning offices directly.
- How do mechanic's liens work in Delaware and how can I protect myself?
- Under Title 25, Chapter 27 of the Delaware Code, contractors, subcontractors, and material suppliers who are not paid can file a mechanic's lien against your property — even if you paid the general contractor in full. A lien in Delaware must be filed in Superior Court within 180 days of the last work or materials furnished. Protect yourself by requiring lien waivers from the GC and all major subcontractors at each payment milestone, and never make a final payment until all lien waiver documentation is in hand.