Delaware Contractor Licensing
Trade-by-trade licensing requirements for Delaware, sourced directly from the state regulatory board and maintained by Gabriel Giner, editor. We currently publish 18 published trade guides, with direct links to each underlying board, statute, or exam-provider resource.
Choose your trade
General Contractor
Delaware Contractor Business License
Verified 2026-09-04
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Electrician
Delaware Master Electrician License
Verified 2026-09-04
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Plumber
Delaware Master Plumber License
Verified 2026-09-04
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HVAC Technician
Delaware Master HVACR / Master HVACR Restricted License
Verified 2026-09-04
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Roofing Contractor
Delaware Contractor Business License and Contractor Registration Certificate
Verified 2026-09-04
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Painting Contractor
Delaware Painting Contractor — Division of Revenue Business License
Verified 2026-09-04
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Landscaping Contractor
Delaware Business License and Contractor Registration, With Conditional Pesticide Licensing
Verified 2026-09-04
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Masonry Contractor
Delaware Contractor Business License and Contractor Registration Certificate
Verified 2026-09-04
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Concrete Contractor
Delaware Concrete Contractor — Statewide Registration / No Separate Concrete Classification
Verified 2026-09-08
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Carpentry Contractor
Delaware Contractor Business License and Contractor Registration Certificate
Verified 2026-09-04
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Solar Installer
Delaware Solar PV — Electrical License and Contractor Business License
Verified 2026-09-04
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Low-Voltage Technician
Delaware Scope-Dependent Electrical and Fire-Alarm Licensing
Verified 2026-09-04
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Fire Sprinkler Contractor
Delaware Fire Suppression Systems Company License and Certificate Holder
Verified 2026-09-04
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Home Inspector
Home Inspector (with Home Inspector Trainee registration as a prerequisite path)
Verified 2026-09-30
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Pool Contractor
No state pool-construction license (Delaware Division of Revenue contractor business license + local county/municipal building permits)
Verified 2026-07-10
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Handyman
Delaware Business License (Contractor) — Division of Revenue; no minor-work dollar exemption
Verified 2026-07-17
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Pest Control
Pesticide Business License (structural pest control — Category 7: Industrial, Institutional, Structural, and Health Related Pest Control)
Verified 2026-07-28
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Septic Contractor
Class E onsite wastewater system contractor
Verified 2026-09-30
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- Published guides
- 18
- Exam-backed
- 7
- Bond-backed
- 0
- Local / municipal
- 12
- Avg initial fee
- $104
How licensing works in Delaware
Delaware is not a one-size-fits-all licensing market. Across the 18 guides currently live on this state hub, 7 require a formal trade examination and 0 require a surety bond before the credential can issue. 12 of the published entries rely on city, county, or municipal registration rather than a single statewide credential, so contractors need to confirm the local building department or business-license office before bidding work.
The point of this state page is to give you a fast read on the regulatory model before you dive into a specific trade. Start with the trades grid below if you already know your specialty. If you are comparing jurisdictions, use the cost calculator for first-year cost and the reciprocity matrix for license portability.
Main boards and agencies
Delaware Division of Revenue
The Division of Revenue issues the mandatory contractor business license and collects the contractors' gross receipts tax under Title 30, Chapter 25. This is a tax/revenue license, not a trade-competency credential. Delaware has no state contractor licensing board and no pool-specific classification. Local county and municipal building departments issue construction permits and enforce pool codes; the DHSS Division of Public Health permits public pools and spas for operation and plan review, not private pool construction.
Open agency siteDelaware Board of Electrical Examiners
Licenses Delaware electricians and administers the individual electrical-license application, examination, renewal, continuing-education, and enforcement process.
Open agency siteDelaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners
The Board issues statewide Master HVACR and Master HVACR Restricted licenses.
Open agency siteDelaware Division of Professional Regulation
The Delaware Division of Professional Regulation administers the trade licensing boards for electricians, plumbers, HVACR, and master pipefitters. Delaware does not issue a state general contractor license — any person doing contracting work in Delaware must instead hold a Delaware Business License from the Division of Revenue.
Open agency siteDelaware Division of Revenue and Department of Labor Office of Contractor Registration
The Division of Revenue issues the contractor business license and administers contractor gross-receipts licensing. The Department of Labor registers construction contractors and enforces the Contractor Registration Act.
Open agency siteDelaware Division of Revenue, Department of Labor, and Department of Agriculture
DOR issues the general business license and administers gross-receipts tax. DOL registers construction contractors before work. DDA licenses pesticide businesses and certifies commercial applicators.
Open agency siteDelaware Office of the State Fire Marshal
OSFM licenses public fire-suppression companies and the associated individual certificate holders, publishes the controlling forms and regulations, and administers its state fire-prevention jurisdiction. Jurisdictional city Fire Marshals issue permits in their listed cities.
Open agency siteDelaware Board of Electrical Examiners and Office of the State Fire Marshal
The Board licenses electricians for NEC-covered electrical services. OSFM licenses public fire-protection companies and individuals, including fire alarm systems, and administers fire-alarm plan-review and inspection materials.
Open agency siteDelaware Department of Agriculture, Pesticide Management Section
State lead agency that licenses pesticide application businesses and certifies commercial pesticide applicators, including structural pest control (Category 7), under the Delaware Pesticide Law. Delaware operates an EPA-approved certification plan under FIFRA; anyone using restricted-use pesticides or applying pesticides for hire must be certified by the DDA.
Open agency siteDelaware Board of Home Inspectors
State board within the Delaware Division of Professional Regulation (DPR) that licenses and regulates home inspectors and trainees, sets competency standards, approves continuing education, issues temporary permits, and adjudicates complaints with disciplinary authority.
Open agency siteDelaware DNREC
Use the cited agency guidance for the named installer pathway and the authority responsible for each project.
Open agency site
Compare Delaware against other states
Every trade above also has a national comparison hub showing how Delaware's exam, bond, fee, and experience requirements stack up against the other 50 jurisdictions.
- GC by state
- Electrician by state
- Plumber by state
- HVAC by state
- Roofing by state
- Painting by state
- Landscaping by state
- Masonry by state
- Concrete by state
- Carpentry by state
- Solar by state
- Low-Voltage by state
- Fire Sprinkler by state
- Home Inspector by state
- Pool by state
- Handyman by state
- Pest Control by state
- Septic by state
States bordering Delaware
Licensing rules change at the state line. Contractors bidding work across the border should review the neighboring hub before assuming Delaware's requirements carry over.
Best starting points in Delaware
Budget
Estimate first-year cost
Compare filing fees, bond premiums, insurance assumptions, and renewal cost before you apply.
Mobility
Check reciprocity pathways
See whether this state accepts NASCLA or uses bilateral reciprocity for the trade you hold now.
Research
Search related guides
Jump directly to linked state and trade pages if you are comparing multiple jurisdictions side by side.
Related reading
Original analyses drawn from our national dataset that put Delaware's rules in context — how its requirements compare, what a record means for eligibility, and how to carry a license across state lines.
Can you get a contractor license with a criminal record?
A 50-state breakdown of background checks, which offenses actually disqualify, and how long a conviction counts.
Contractor license difficulty index
Where each state ranks on exam, experience, and bond burden — hardest to easiest.
License costs ranked by state
Cheapest to most expensive states once fees, bond, and first-year insurance are counted.
How to transfer a license to another state
Which states accept NASCLA or bilateral reciprocity, and what re-testing each requires.
