Delaware trade license reciprocity

Delaware issues a statewide Journeyperson Electrician license through the Board of Electrical Examiners in the Division of Professional Regulation; a lesser Residential Electrician license (4,000 hours plus a residential exam) also exists. A new journeyperson must be at least 20 and either hold a certificate of completion from a Board-approved apprenticeship (no further exam) or document over 8,000 hours of full-time electrical work under a licensed master electrician (at least 4,000 of them directly under a master) and pass the Prov-administered journeyperson exam with 75%, using only the NEC as a reference. The application fee is $105. Out-of-state journeypersons are licensed by reciprocity under 24 Del. C. § 1409 without a Delaware exam: the Board decides case by case whether the origin state's requirements are substantially similar (Regulation 11.4 sets the benchmark at 4 years of supervised experience, a licensing exam and 5 hours of NEC continuing education) and otherwise requires five years of licensed practice. Unlike the master level, the Board publishes no list of substantially-similar states for journeypersons. Licenses run two years and renew with continuing education.

Delaware issues a person-held Master Electrician license through the Board of Electrical Examiners; it is the state's highest electrician credential and authorizes residential, commercial and industrial work. The Board also issues Master Electrician Special (restricted to specialties such as elevators, HVAC, signs, pools or primary distribution) and Limited Electrician licenses (residential-scale work, three years' experience), which are lesser credentials. A new master must show six years of full-time experience under a licensed master electrician, or four years plus two years of technical training, or a completed apprenticeship of 8,000 hours with 576 hours of related instruction, and pass the Prov-administered master exam with 75% using only the NEC as a reference; the application fee is $203 and proof of at least $300,000 general liability insurance is required before the license issues. Out-of-state masters are licensed by reciprocity without a Delaware exam under 24 Del. C. § 1409: the Board has published that Maryland and New Jersey standards are substantially similar (no experience proof) and that eighteen other jurisdictions are not, requiring five years of licensed practice; all other states are evaluated case by case. Licenses run two years and renew with continuing education.

Delaware does not issue a journeyman or journeyperson HVACR license. The Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners issues only Master Plumber, Master HVACR and Master HVACR Restricted licenses, and 24 Del. C. § 1820(c)(1) lets 'an apprentice, journeyman, mechanic or other person' provide HVACR services without a license while working under the supervision of a master HVACR licensee who is their employer or a full-time employee of the same business. An out-of-state journeyman license therefore has nothing to transfer to in Delaware and is neither required nor recognized for employment; technicians who service refrigerant-containing equipment still need federal EPA Section 608 certification. Delaware's own 'journeyman certificate' is a certificate of completion from a federally-registered HVACR apprenticeship program, which is an experience credential used toward the master license rather than a license: with it, 2 years of post-apprenticeship work under a master (in Delaware or under a similar-level licensee in another state) qualifies an applicant for the Master HVACR exam, and without it 7 years of supervised experience plus the Apprenticeship By-Pass exam are required. Out-of-state journeyman experience gained under a licensed master counts toward those requirements.

Delaware issues a person-held Master HVACR license through the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners in the Division of Professional Regulation (the electrical trade is regulated by a separate board). A Master HVACR licensee may design, install, service and alter heating, air conditioning, refrigeration, ventilation and process systems including gas piping; a Master HVACR Restricted license covers one specialty (forced-air heating with ventilation and gas piping, hydronic heating with gas piping, commercial hood systems, refrigeration, air conditioning, or gas piping). Employees work under a master's supervision without their own license. A new master needs a journeyman certificate from a federally-registered apprenticeship plus 2 years under a master, or 7 years under a master plus the ABC Delaware Apprenticeship By-Pass exam, then passes the ProV-administered Master HVACR exam (100 questions, 4 hours, open book, 70%, $100) and pays the $173 application fee; a CFC (EPA 608) card is required. Out-of-state masters are licensed by reciprocity without a Delaware exam under 24 Del. C. § 1823: the Board has published that Connecticut and Maryland standards are substantially similar (no experience proof) and that fourteen other jurisdictions are not (7 years of licensed practice required); all other states are evaluated case by case. Licenses renew biennially with 5 hours of continuing education from 2026.

Delaware does not issue a journeyman or journeyperson plumber license. The Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners licenses only master plumbers (and master HVACR / master HVACR restricted), and 24 Del. C. § 1807(c)(1) lets an apprentice, journeyman, mechanic or other person provide plumbing services without a Board license while working under the supervision of a master plumber who is their employer or a full-time employee of the same business. An out-of-state journeyman plumber license therefore has nothing to transfer to in Delaware and is neither required nor recognized as a Delaware credential for employment. Delaware's own 'journeyman's certificate' in 24 Del. C. § 1808(a)(1) is a certificate of completion from a plumbing apprenticeship that meets or exceeds federal BAT/OA standards, issued in any state: it is an experience credential used toward the Master Plumber license, not a license. With that certificate, two years of post-apprenticeship work under a master plumber (or a similar-level licensee in another state) qualifies an applicant for the master exam; without it, seven years of such supervised experience plus the apprenticeship equivalency (bypass) tests are required. Out-of-state journeyman hours gained under a licensed master count toward those master-exam experience requirements.

Delaware issues a person-held Master Plumber license through the Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners in the Division of Professional Regulation. 24 Del. C. § 1807 requires that license (or a statutory exemption) to provide plumbing services or to use the titles licensed plumber / master plumber. Employees, apprentices and journeymen work under a master's supervision without their own Board license. A new master needs a journeyman's certificate from a federally-standard apprenticeship plus two years under a master plumber (or similar-level licensee in another state), or seven years under such supervision plus the Delaware vocational-technical apprenticeship equivalency tests, then Board approval and the ProV-administered master plumber exam; the application fee is $173. Out-of-state masters apply by reciprocity under 24 Del. C. § 1810 without a Delaware exam: the Board shall grant the license if the origin state's standards are substantially similar, and otherwise requires at least seven years of practice after licensure. 24 DE Admin. Code 1800 § 2.3 requires every reciprocity applicant to submit the origin state's licensure laws and regulations so the Board can make that comparison. Licenses renew biennially; from the 2026 renewal, plumbing licensees complete 5 hours of continuing education (3 code, 1 safety, 1 cross-connections/backflow) by October 31 of even-numbered years. The Board's published table treats Master Plumber licenses from Connecticut, Iowa and Maryland as substantially similar.

Delaware does not license residential contractors on skill. There is no state examination, no experience requirement, no financial statement, no qualifying individual and no board: the Division of Professional Regulation runs 37 boards and none of them covers general contractors, building contractors, residential contractors or home builders. Two credentials are still mandatory, and both are held by the business rather than by a person. The first is the contractor business license from the Division of Revenue, and it is worth being blunt about what that is: it is a tax registration. The Division's own guidance says the business license 'is not a regulatory license and the issuance of such license does not attest to the qualifications of the applicant to perform the activity described on such license.' It costs $75 a year and brings with it a gross receipts tax on construction receipts. The second is the Contractor Registration Certificate from the Department of Labor's Office of Contractor Registration under the Delaware Contractor Registration Act, which every business doing construction services or maintenance must hold before work begins; it checks workers' compensation coverage, a state business license, an OSHA-compliant safety plan and a disclosure of labor law violations and fraud convictions, but it tests nothing. What does govern residential work is the Department of Justice's Home Improvement Services Regulation, in force since November 1, 2023, which controls contracts and sales practices rather than competence. Local licensing is the real variable: unincorporated New Castle County licenses building contractors in classes by project value, while Kent and Sussex counties require permits only.

Delaware has no general, commercial or unlimited building contractor license and no state board that examines builders. The Division of Professional Regulation's 37 boards cover electricians, plumbers and HVACR contractors, elevator mechanics, architects, home inspectors and manufactured home installers, but nothing for general or building contractors, so there is no competency credential at this tier and no trade or business-and-law examination to sit. The two credentials Delaware does require are entity-held and are both about revenue and labor compliance rather than skill. The contractor business license from the Division of Revenue is a tax registration: $75 a year plus a gross receipts tax on construction receipts, and the Division states plainly that the license 'is not a regulatory license and the issuance of such license does not attest to the qualifications of the applicant to perform the activity described on such license.' The Contractor Registration Certificate from the Department of Labor's Office of Contractor Registration is required of every business doing construction services or maintenance before work begins, and it checks workers' compensation, the state business license and an OSHA-compliant safety plan. A contractor without a Delaware place of business is a nonresident contractor and posts a tax bond of six percent of contracts of $20,000 or more. Project-size classification exists only locally: unincorporated New Castle County grades building contractor licenses from Class C to unlimited Class U by project value and surety bond.

Delaware licenses home inspectors statewide. The Board of Home Inspectors sits in the Division of Professional Regulation under chapter 41 of title 24 of the Delaware Code, and nobody may inspect, advertise or hold themselves out as a home inspector in the state without its license. This is a professional license and should not be confused with Delaware's contractor position, which is a Division of Revenue business tax registration rather than a Division of Professional Regulation credential. The board licenses through four published routes: endorsement for an inspector already licensed elsewhere, experience for an inspector based in a state that licenses nobody, examination for a newcomer, and the Home Inspector Trainee registration that the examination route is built on. The trainee tier is a training registration rather than a second destination: a trainee practices only under the direct, personal supervision of a Delaware-licensed inspector, who reviews and signs every report and takes total responsibility for it, and a trainee may not be charged a fee or made to sign a non-compete by that supervisor. The full Home Inspector license is what an experienced inspector moving to Delaware applies for. Delaware designates the National Home Inspector Examination as its written examination, and it writes no law and rules paper of its own. Insurance is a real condition of licensure here rather than an afterthought: the applicant or the applicant's employer must carry at least $50,000 of errors and omissions cover and at least $250,000 of liability cover, certified directly by the carrier. Licenses expire on August 31 of odd-numbered years and renew on 40 hours of approved continuing education. Applications and renewals run through the DELPROS online system, and the board reviews a completed file at its next meeting, held on the second Tuesday of January, March, May, July, September and November.