Missouri · Electrical licensing · official-source guide
Missouri issues a statewide electrical contractor licence through the Office of Statewide Electrical Contractors in the Division of Professional Registration. It licenses the individual, who then qualifies one company. The licence is optional: section 324.920 exempts anyone working where no local licence is required or who holds a current local one. Its value is that cities must honour it.
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Verified against agency sources on 2026-09-12. Rules and fees change; confirm with the named authority before relying on this guide.
Missouri has an electrical credential at state level, and it is easy to overstate. The Division of Professional Registration lists Electrical Contractors among the boards and professions it administers, alongside 42 others. The rules give it a precise name: Division 2117 of Title 20 of the Code of State Regulations is the Office of Statewide Electrical Contractors. Rule 20 CSR 2117-1.020 states its purpose as regulating electrical contractors to protect the public from harm caused by dangerous, dishonest, incompetent or unqualified electrical contractors, and implementing a system to license applicants who have the skills and competency to practise as electrical contractors anywhere within Missouri. The office writes to PO Box 1335, 3605 Missouri Boulevard, Jefferson City, MO 65102-1335, takes email at osec@pr.mo.gov and answers at 573-522-3280. The statutory basis is sections 324.900 to 324.945, RSMo, which the rules call the statewide electrical contractor statute. Nine sections make it up: definitions, rulemaking authority and duties of the division, work exempt from statutory requirements, application requirements, political subdivisions to recognize statewide licensure, the Missouri electrical industry licensing fund, renewal, refusal and discipline, and violations and penalties. Section 324.900 defines the division as the Division of Professional Registration within the Department of Commerce and Insurance, and defines a statewide license as a valid license issued or recognized by the division that allows the licensee to practise in any jurisdiction regardless of local licensing requirements. That single definition is the whole point of the credential.
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Missouri does not require every electrician or electrical contracting business in the state to hold a state licence. Section 324.920 carries an exemption in its fourth subsection: those operating in jurisdictions that have no local licensing requirement, and those who hold a current local licence, may operate without statewide licensure. Missouri has no statewide requirement to be licensed before doing electrical work, and it has no statewide building code for general construction. Electrical licensing in Missouri has historically been a city and county matter, and it still is. What the 2017 legislation added was an optional statewide credential that local governments must honour. Read that way, the Office of Statewide Electrical Contractors is not a gatekeeper. It is a portability mechanism. A contractor working in one city under that city's own licence needs nothing from the state. A contractor who wants to bid across several jurisdictions without sitting a separate examination in each one applies for the statewide licence and uses it as the passport. That distinction is the single most misreported fact about Missouri electrical licensing, because the presence of an Electrical Contractors entry on the division's board list invites the assumption that Missouri licenses electricians the way Iowa or Nebraska do. It does not. The credential is real, it is issued by a real office under real rules with real fees, and it is voluntary. Section 324.925 also freezes the map: political subdivisions that lacked electrical licensing authority before August 28, 2017 cannot gain it under that section.
The value of the licence sits entirely in section 324.925, and the statute backs it with an unusual enforcement lever. Political subdivisions may keep their own local electrical contractor licences, but they must acknowledge statewide licences as an alternative. The section states that no political subdivision shall require the holder of a statewide licence to obtain a local business or occupation licence that requires passing of any examination. A statewide licensee is eligible to perform electrical contracting work and to obtain permits throughout Missouri. If a political subdivision refuses to recognize the statewide licence, the licensee may file a complaint with the division. The division investigates and notifies the noncompliant subdivision, which then has thirty days to comply. If it still refuses, the director of the Department of Revenue must withhold local sales tax distributions until it complies. Few licensing statutes in any state attach a revenue penalty to a city that ignores a credential. The section is careful about what it does not take away. Political subdivisions may still enforce applicable codes and laws, implement electrical codes based on the National Electrical Code, issue local licences and permits, require general business licences, inspect work, and license electricians based on professional experience and nationally accredited examination scores. So a statewide licensee still pulls local permits, still passes local inspection, and may still owe a general business licence. What the statewide licence removes is the local examination and the local occupational licence built on it.
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Missouri licenses the individual, not the contracting entity, and it does so through a qualifier structure. Rule 20 CSR 2117-3.010 states that every corporation, firm, institution, organization, company or representative engaged in electrical contracting under the statewide electrical contractor statute shall designate at least one person as a qualifier who holds a statewide electrical contractor licence. The qualifier must be an employee of the entity and must serve at a supervisory level within it. Any licensee acting as a qualifier must notify the division in writing on the division's form. No licensee may serve as qualifier for more than one entity, although an entity may have more than one qualifier. The qualifier carries personal responsibility for the work performed under any permit he or she obtained and for any work performed under his or her supervision. Section 324.920 says the same thing from the licensee's side: a statewide licensed electrical contractor shall represent only one firm, company, corporation, institution or organization at one time. Rule 20 CSR 2117-1.010 defines a qualifier as a supervisory level licensee designated by the entity as holder of the electrical contractor licence on behalf of the entity. The practical effect is that a Missouri electrical contracting business does not hold a licence number of its own under this scheme. It holds a person who does. Losing that person means losing the entity's ability to work as a statewide electrical contractor until another qualifier is designated.
Section 324.920 and rule 20 CSR 2117-2.010 set the same qualification ladder, and the rule adds the evidence rules. An applicant must show one or more of the following. Twelve thousand verifiable practical hours installing equipment and associated wiring. Ten thousand verifiable practical hours plus evidence of an electrical journeyman certificate from a United States Department of Labor approved electrical apprenticeship program. Eight thousand verifiable practical hours plus an associate's degree from a state accredited program. Four thousand verifiable practical hours supervising the installation of equipment and associated wiring plus a qualified four year electrical engineering degree. Or a copy of an electrical contractor or master electrician occupational or business licence issued by any Missouri political subdivision that has been current and active for six of the previous eight years, verified by the issuing entity as not subject to discipline. Verifiable practical hours may be shown by copies of W-2 forms with an affidavit or original notarized letter on company letterhead detailing hours, dates and type of work, by affidavits from employers or others with first hand knowledge, by a copy of a local or state licence that required substantially similar experience and is verified by the issuing entity, or by any other documents the division accepts. Any degree must be verified by an original sealed transcript or a transcript sent electronically from the school. Any college degree must come from an institution accredited by a state or regional accrediting body the division approves. An application not completed within twenty-four months of first submission is void.
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Missouri does not build its own electrical examination, and the rules say so directly. Rule 20 CSR 2117-2.020 states that the division will approve examinations that are based upon the National Electrical Code, that are nationally standardized, and that are administered by an independent professional testing agency not affiliated with a political subdivision or with the state of Missouri. That last clause matters: an examination written and given by a Missouri city does not qualify as a division approved examination, even though a licence issued on the strength of one may still count as experience evidence under a different rule. Examinations at electrical contractor, master level electrician and journeyman level electrician are all acceptable for licensure, so the credential does not demand a contractor grade examination specifically. The division posts on its website every examination it will accept. The applicant is responsible for paying all costs of the examination to the appropriate entity, which means the examination fee is not one of the division's fees and does not appear in the division's fee rule. Section 324.920 states the same requirement in statute: the applicant must pass a standardized and nationally accredited electrical assessment examination meeting current industry standards and pay for the costs of that examination. Under rule 20 CSR 2117-2.010 passage may be evidenced by scores transmitted to the division by the testing entity, by scores the applicant received from the testing entity, or by a verified copy of a local or state licence that required a division approved examination.
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Rule 20 CSR 2117-1.070 carries the complete fee schedule, and it is short. The licence application fee is $200. The triennial renewal fee is $200. The inactive triennial renewal fee is $100. The reactivation fee is $100. The reinstatement fee is $250. The temporary licence fee is $100. A duplicate licence is $10. A verification of licence is $10. An insufficient check fee is $25. All fees are nonrefundable. Notice what is absent. There is no examination fee, because under 20 CSR 2117-2.020 the applicant pays the testing agency directly. There is no separate business or entity fee, because the entity is not licensed and only designates a qualifier. There is no bond fee payable to the division. Section 324.910 constrains the division's pricing: the division shall establish all applicable fees set at an amount which shall not substantially exceed the cost of administering the relevant sections, and shall deposit collected fees to the state treasury in the Missouri electrical industry licensing fund created by section 324.930. Rule 20 CSR 2117-1.060 lets a licensee request a duplicate licence in writing on payment of that $10 fee, and rule 20 CSR 2117-1.050 requires a licensee to report any change of legal name, mailing address or telephone number to the division in writing within thirty days, with documentation for a name change. Failing to do that is the cheapest way to miss a renewal notice.
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Missouri sets one insurance figure and pushes the bond question down to the local level. Rule 20 CSR 2117-2.010 requires proof of liability insurance of at least five hundred thousand dollars in the form of a Certificate of Insurance issued by an insurance company authorized to engage in the business of insurance in the state of Missouri. The rule then adds a sentence that rejects a lot of applications: a Certificate of Insurance issued by an agent is not acceptable. The certificate has to come from the carrier. Section 324.920 states the statutory version of the same requirement, directing an applicant to provide proof of liability insurance in the amount of five hundred thousand dollars. On bonding, the rule requires proof that bonds required by any political subdivision have been posted, and the statute directs the applicant to post a bond with each political subdivision. The state therefore sets no bond amount of its own. The number is whatever each city or county where you intend to work demands, and the division's role is limited to confirming that you have posted whatever those jurisdictions require. A contractor planning to use the statewide licence across several metros should price the bonds jurisdiction by jurisdiction before assuming the licence removes local cost. The grandfather route under section 324.920 has the same insurance condition attached, requiring proof of insurance alongside the examination evidence and the experience or local licence history.
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Section 324.935 sets the cycle: licences shall be renewed once every three years, beginning in 2020. Rule 20 CSR 2117-2.030 fixes the date. Each licensee renews by September 30, 2020 and then every third year thereafter by September 30 of that year. Renewal requires completing the division's renewal form and paying all applicable fees, which under 20 CSR 2117-1.070 means the $200 triennial renewal fee. The division mails a renewal notice to the last known address of each licensee, and failure to receive it does not relieve the licensee of the duty to renew on time. Renewals must be postmarked no later than the expiration date to avoid late fees. A licence not renewed by the deadline goes into inactive status and the division treats it as lapsed. While inactive, a licensee must still renew each cycle and pay the inactive renewal fee of $100. A licence not renewed for two years is void. Under 20 CSR 2117-2.050 a lapsed licence may be restored within two years of the renewal date by filing the reinstatement form and the $250 reinstatement fee, and a voluntarily inactive licence may be reactivated with the form and the $100 reactivation fee. On continuing education, Missouri is unusual. Neither section 324.935 nor the chapter 2 renewal rule sets any hour requirement. Section 324.910 lets the division adopt rules on continuing competency requirements, and section 324.935 references continuing competency only in connection with inactive status.
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Missouri wrote a rule for the moment a licensed contractor moves firms, and it is one a contractor can trip over without noticing. Section 324.935 requires that when an electrical contractor changes employers, all permits on that licence must be cleared first. Rule 20 CSR 2117-1.010 defines cleared: a permit obtained by an electrical contractor is cleared when the permit is either transferred or terminated by the issuing political subdivision. Rule 20 CSR 2117-3.020 sets the mechanics. A licensee must maintain the name, address and telephone number of each employer with the division. A licensee must notify the division in writing at least ten business days before a transfer of employment, using the division's Change of Employment Form. That form must state the name, address and phone number of the current employer and of the new employer, the dates the current employment ends and the new employment begins, and a list of all current active permits on the licence with enough information to identify each permit and the name, address and electronic contact information of the issuing jurisdiction. On receiving the form the division notifies each political subdivision where the licensee has registered to work. Each of those subdivisions has seventy-two hours, excluding weekends and holidays, to notify the division of any uncleared permits or other outstanding issues. If no notice arrives in that window, the division deems the permits cleared. Rule 20 CSR 2117-3.030 runs the reverse: a political subdivision suspending a licensee's work must notify the division in writing with the reasons and supporting evidence.
Section 324.945 sets the penalty, and it is narrower than it first looks because of what the statute actually requires. Any person that knowingly violates any provision of sections 324.900 to 324.945 is guilty of a class B misdemeanor. Officers, agents or members who knowingly participate in or assist a violation face the same charge. The division may file complaints and take enforcement actions against violators. Read that against section 324.920, which exempts those operating in jurisdictions with no local licensing requirement and those holding a current local licence, and the shape of the offence becomes clear. Doing electrical work in Missouri without a statewide licence is not automatically a violation of these sections, because the statewide licence is not universally required. What the penalty reaches is knowing violation of the statewide scheme itself, such as practising on a lapsed or suspended statewide licence, misrepresenting a licence, or acting as a qualifier for more than one entity. The real exposure for unlicensed electrical work in Missouri usually sits in local ordinance, not in state law, because the local licence and the local permit are what most jurisdictions actually require. Section 324.940 gives the division the separate power to refuse to issue or renew a licence and to suspend a licence, and rule 20 CSR 2117-3.030 gives a political subdivision a formal route to report a suspension to the division for its own disciplinary review.
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Section 324.915 lists six categories of work to which sections 324.900 to 324.945 do not apply, and the list is broad enough that whole sectors sit outside the scheme. Employees of an electric utility, a gas corporation, a water corporation, a provider of cable television service or a telecommunications company are exempt. Railroad corporations are exempt. A contractor who services the construction and maintenance of power lines or substations for electric utilities, municipal utilities, rural cooperatives, telecommunications companies or cable television providers is exempt. A federally licensed radio or television broadcast station, and a commercial mobile radio service provider licensed by the Federal Communications Commission, are exempt. A private broadcast engineering contractor possessing a valid Society of Broadcast Engineers certification is exempt. Finally, a contractor engaged in the design, installation, erection, repair, maintenance or alteration of class two or class three remote control, signaling or power limited circuits, optical fiber cables or other cabling, or communications circuits in residential or commercial premises is exempt. That last exemption is the one that matters most commercially, because it puts structured cabling, low voltage controls and much of the fire alarm and security trade outside the statewide electrical contractor statute entirely. It does not put that work outside local licensing or local permit requirements, which remain live under section 324.925. The exemptions took effect with the rest of the scheme on August 28, 2017.
Missouri has not adopted a statewide edition of the National Electrical Code for general construction, and nothing in sections 324.900 to 324.945 adopts one. The statute instead assumes that codes come from below. Section 324.925 preserves the right of political subdivisions to enforce applicable codes and laws and to implement electrical codes based on the National Electrical Code, and section 324.900 defines electrical contracting as work on electrical systems regardless of voltage that are used for generation, transmission and utilization of electricity. Rule 20 CSR 2117-1.010 defines the National Electrical Code without naming an edition at all. The consequence for a contractor is concrete: the code edition you must build to changes at the city limit, and you have to confirm it address by address. Two examples show the spread. The City of St. Louis works to the 2017 National Electrical Code, adopted by Ordinance number 70802, and its Building Division publishes that fact on its own electrical permit page. Kansas City adopts its trade codes through the Kansas City Building and Rehabilitation Code, chapter 18 of the city code, with contractor licensing handled under Article XII of that code. The examination requirement under rule 20 CSR 2117-2.020 sidesteps the problem by requiring an examination based upon the National Electrical Code without tying it to a Missouri edition. Rule 20 CSR 2117-5.010 requires a licensee to perform electrical work in compliance with applicable electrical codes and standards, which in Missouri means the local ones.
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St. Louis runs a full city electrical licence and does not simply accept a state credential as a substitute for its own permit process. The Building Division states plainly that electrical permits are issued to licensed electrical contractors certified by the City of St. Louis, and to owners of single family homes who meet certain conditions. To submit an electrical permit application a contractor needs the property address, an Electrical Contractor's licence issued by the City of St. Louis Building Division, and a registered trades contractor account on the STL City Permits website. The application fee for all electrical permits is $25, with the balance of the fees driven by the work being performed and payable at the end of the application. Walk in permits are available in the Building Division Mechanical Section, Room 425, City Hall, between 8:00 a.m. and 4:30 p.m. Monday to Friday. Online applications run through the contractor's dashboard. The division expects to return an approved permit or feedback within ten business days, with most applications approved in one to three business days. Homeowners have a narrow route: pass a short test given by the Building Division Electrical Section, work on an owner occupied single family dwelling, and limit the work to a room addition, repair or modification to an existing system. Homeowners may not pull permits for service changes, rehabilitation or new construction. The city works to the 2017 National Electrical Code as adopted by Ordinance number 70802.
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Kansas City licenses electrical trades through its City Planning and Development Department, and the structure is different again from the state scheme and from St. Louis. The city issues Certificates of Qualification, which it describes as professional licences, in three categories relevant to electrical work: Electrical Supervisor, Master (Limited) Electrician and Master Electrician. The order of operations matters. The city directs an applicant to obtain a business licence from the Finance Department first, then to apply for a Certificate of Qualification in the trades for which the applicant will perform work through CompassKC, the city's plan review and permitting system. Requirements and reference letter forms are published for each of the three categories. The city enforces contractor licensing under Article XII of the Kansas City Building and Rehabilitation Code, which is chapter 18 of the city code. Contractor licensing questions go to cdlicensing@kcmo.org or 816-513-1500. Two things follow for a contractor deciding whether the statewide licence is worth $200. First, Kansas City grades the individual, so the person who qualifies the company must hold the right certificate category for the scope of work. Second, section 324.925 means the city cannot make a statewide licensee sit a local examination to obtain a local business or occupation licence, but it can still require the general business licence, the permits and the inspections, and it can still run its own certificate scheme for everyone else.
Missouri puts its display and advertising rules in the ethical standards rule rather than in statute. Rule 20 CSR 2117-5.010 requires a statewide licensed electrical contractor to have immediate personal possession of the electrical licence while performing electrical work. The same rule requires the licensee to include his or her licence number on any written contract. That is the display obligation contractors most often miss, because it attaches to the contract document rather than to a vehicle or a sign. The rule also prohibits conduct intended to defraud or deceive the public or any member of the public, prohibits impersonating another licensee or allowing an unlicensed person to use the licence, prohibits obtaining electrical permits on behalf of another contractor without that contractor's knowledge and permission, and prohibits intentionally charging a customer for work not performed or materials not provided. Performing work requiring a permit without first obtaining the permit from the local political subdivision is itself an ethical violation. On verification, rule 20 CSR 2117-1.020 requires the division to maintain a website or other public electronic media containing a list of current and unexpired statewide electrical contractor licensees, a listing of all disciplinary actions taken against any licensee, information about how to file a complaint, and the list of examinations approved for licensure. A formal verification of licence is available from the division for the $10 fee set in rule 20 CSR 2117-1.070. A customer should also ask the local building department, because the local licence is what most Missouri jurisdictions actually check.
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These are common details other guides publish about Missouri, but we could not verify them from the agency source. Confirm them directly before relying on them.
Yes, but the licence is optional. The Office of Statewide Electrical Contractors within the Division of Professional Registration issues a statewide electrical contractor licence under sections 324.900 to 324.945, RSMo. Missouri has no universal state requirement to be licensed.
Nobody is compelled to. Section 324.920 exempts anyone operating in a jurisdiction with no local licensing requirement and anyone holding a current local licence. The statewide licence is for contractors who want portability across jurisdictions.
The individual. Rule 20 CSR 2117-3.010 requires a company engaged in electrical contracting under the statute to designate at least one qualifier who holds the licence, is an employee, and serves at a supervisory level.
Under section 324.925 a political subdivision cannot require a statewide licensee to obtain a local business or occupation licence that requires passing an examination. You are eligible to work and pull permits statewide.
You file a complaint with the division. The division investigates and gives the subdivision thirty days to comply. If it still refuses, the director of the Department of Revenue withholds its local sales tax distributions.
Twelve thousand verifiable practical hours, or 10,000 with a Department of Labor approved apprenticeship journeyman certificate, or 8,000 with an associate's degree, or 4,000 supervisory hours with a four year electrical engineering degree.
The application fee is $200 and the triennial renewal fee is $200 under rule 20 CSR 2117-1.070. Reinstatement is $250, temporary licence $100, and inactive triennial renewal $100. The examination is paid separately to the testing agency.
Liability insurance of at least $500,000, proved by a Certificate of Insurance issued by an insurance company authorized to do business in Missouri. A certificate issued by an agent is not accepted.
Not to the state. Rule 20 CSR 2117-2.010 requires proof that bonds required by any political subdivision have been posted, so the amount is set by each city or county where you work.
Every three years, by September 30 of the renewal year. Neither section 324.935 nor the renewal rule sets any continuing education hour requirement for this licence.
Missouri has not adopted one statewide. Section 324.925 lets political subdivisions implement NEC based electrical codes, so the edition changes by jurisdiction. St. Louis works to the 2017 NEC under Ordinance number 70802.
Yes. Rule 20 CSR 2117-5.010 requires a licensee to include the licence number on any written contract, and to have immediate personal possession of the licence while performing electrical work.
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