LicensebyState

Missouri trade license reciprocity

How Missouri licenses each trade and level, who it reciprocates with, and where a Missouri license goes.

Electricians

Missouri journeyman electrician

Licensed by cities and counties

Verified September 15, 2026· 6 sources

Missouri does not issue a journeyman electrician license. The only state-level electrical credential is the voluntary statewide electrical contractor license created by RSMo 324.900-324.945 (S.B. 240, 2017), and the Office of Statewide Electrical Contractors (OSEC) states that it covers only the electrical contractor, not the electricians the contractor employs. RSMo 324.925.3(8) expressly leaves cities and counties free to license electricians, provided the local license is based on professional experience and passage of a nationally accredited electrical assessment examination given on a routine schedule, and jurisdictions that did not license electricians before August 28, 2017 may not start. Journeyman licensing therefore happens city by city and county by county (Springfield, the City of St. Louis, St. Louis County, Kansas City and others), each with its own experience rules, exam and fees; there is no statewide reciprocity for journeymen. A journeyman arriving from another state must apply in each jurisdiction where they will work, though the widespread use of ICC, Prometric and other national exams means a previously passed exam is often accepted in place of retesting.

How local licensing works in Missouri

How local licensing works. Missouri has no state electrician license and no state electrical board for individuals. RSMo 324.925.3(8) permits any political subdivision that licensed electricians before August 28, 2017 to keep doing so, as long as the license rests on professional experience plus a nationally accredited Electrical Assessment Examination administered on a routine and accessible schedule. The OSEC FAQ for political subdivisions confirms the statewide contractor license does not extend to a contractor's employees. Requirements below are those verified on the jurisdictions' own pages.

Springfield. Building Development Services certifies Journeyman and Master craftsmen through the Building and Trades Board, which meets the first Thursday of each month. Journeyman Electrical requires 4 years under the supervision of a master in the trade or 6 years of experience in the trade, documented on notarized Applicant Experience forms (one per employer; 1099s for the self-employed). Approved applicants test through ICC (Pearson VUE, roughly $125) and need 75%. Reciprocity from another jurisdiction: submit the same experience forms plus a copy of an exam score notification of at least 75% from Prometric, Experior, Block or ICC on the identical exam Springfield requires, and the board can approve without further testing; the application also asks for any other states where the applicant is licensed and requires copies of those licenses. Fees: $25 initial journeyman certificate (covers the rest of the calendar year) and $25 annual renewal.

City of St. Louis. The Building Division's Committee of Electrical Examiners decides, through written and oral examination, whether applicants have the knowledge and experience for electrical certificates and licenses, testing practical installation competency, electrical theory and the St. Louis Electrical Code. Its page does not publish license classes, experience thresholds, fees or any reciprocity terms.

Other cities and counties. The practical path is to present a passing score on a nationally accredited journeyman exam (ICC, Prometric, Prov, PSI or NASCLA) together with documented experience to each city or county; Springfield explicitly accepts identical exams from Prometric, Experior, Block and ICC in lieu of retesting.

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Missouri master electrician · “Statewide Electrical Contractor License (voluntary; master-level qualifier)”

State license plus local requirements

Verified September 15, 2026· 10 sources

Issued by Missouri Division of Professional Registration, Office of Statewide Electrical Contractors (OSEC)

Missouri's highest person-held electrical credential is the Statewide Electrical Contractor License issued by the Office of Statewide Electrical Contractors (OSEC) under RSMo 324.900-324.945, in force since 2018-2019. Despite the name it is held by an individual: RSMo 324.920 requires the applicant personally to show 12,000 verifiable practical hours (or 10,000 hours plus a registered apprenticeship, 8,000 hours plus an electrical associate's degree, or 4,000 supervisory hours plus a four-year electrical engineering degree), pass a standardized nationally accredited electrical assessment examination, carry $500,000 of liability insurance and post any bonds required by the local jurisdictions where they pull permits; a company qualifies by employing at least one such licensee at a supervisory level (the 'qualifier' in 20 CSR 2117-1.010). The license is voluntary: RSMo 324.925 obliges every city and county to accept it in place of a local electrical contractor license and forbids any local exam for its holder, but jurisdictions may keep issuing their own master electrician and electrical contractor licenses to people who do not hold it (Springfield certifies Master Electrical craftsmen, and the City of St. Louis, St. Louis County and Kansas City run their own programs). Missouri publishes no reciprocity agreements with other states; RSMo 324.920 lets the Division negotiate them and OSEC says approved states will be posted, but none are. An out-of-state master electrician instead applies directly: OSEC accepts previously passed ICC, NASCLA, Prometric, Prov and PSI master or electrical contractor exams taken for another state board as meeting the exam requirement, and out-of-state hours count toward the 12,000.

How local licensing works in Missouri

Relationship between the state and local licenses. RSMo 324.925.1: political subdivisions may establish their own local electrical contractor license but shall recognize a statewide license in lieu of it, and may not require a statewide licensee to pass any examination or proficiency assessment; a jurisdiction that refuses can have its local sales tax withheld. Subdivisions may still require business licenses and permits, inspect work, and license electricians and contractors who lack the statewide license based on experience plus a nationally accredited exam (324.925.3). The statewide license covers only the contractor/qualifier, not employees.

Springfield. Building Development Services certifies Master Electrical craftsmen: 4 years as a certified journeyman in the trade or 10 years of satisfactory experience, notarized employer experience forms, approval by the Building and Trades Board (first Thursday monthly), then the ICC master exam through Pearson VUE (about $125) with a 75% minimum. Reciprocity from another jurisdiction is available by submitting a score of at least 75% on the identical exam from Prometric, Experior, Block or ICC plus the experience forms; copies of licenses held in other states must be attached. Initial master certificate $50 (covers the rest of the year), renewal $50 annually. A licensed master must generally be listed on electrical permits.

City of St. Louis. The Committee of Electrical Examiners examines applicants for electrical certificates and licenses by written and oral exam covering practical installations, theory and the St. Louis Electrical Code; classes, fees and reciprocity are not published on its page.

Local alternative. Someone who only needs to work in one city can instead apply to that city, which will generally accept the same national exam scores.

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HVAC Technicians

Missouri journeyman HVAC technician

Licensed by cities and counties

Verified September 15, 2026· 12 sources

Missouri does not issue a journeyman HVAC license and has no state HVAC or mechanical board; the Division of Professional Registration's list of licensed professions contains no heating, air conditioning, refrigeration or mechanical contractor profession, and the only statewide construction credential is the voluntary electrical contractor license. HVAC technicians are licensed, where they are licensed at all, by cities and counties under their own ordinances: Springfield certifies Journeyman Mechanical craftsmen on an ICC exam, St. Louis County licenses mechanical journeymen through its Board of Examiners for Mechanical Licensing, Kansas City certifies trade supervisors and licenses mechanical contractors, and the City of St. Louis licenses mechanical contractors and journeyman pipefitters. Requirements, exams and fees differ in each place and there is no statewide reciprocity. A journeyman arriving from another state must apply in each jurisdiction where they will work; the widespread use of ICC and Prometric exams means a matching passing score is often accepted in place of retesting (Springfield accepts an identical Prometric, Experior, Block or ICC exam score of 75% or better, and Kansas City may accept another jurisdiction's comparable exam). EPA Section 608 refrigerant certification is a separate federal requirement that applies statewide.

How local licensing works in Missouri

How local licensing works. Missouri has no state HVAC license and no statute standardizing local HVAC licensing, so each city or county that licenses mechanical tradespeople does so under its own building code and ordinance. The credentials below are the ones published by the largest jurisdictions.

Springfield. Building Development Services certifies Journeyman Mechanical craftsmen. Eligibility is 4 years under the supervision of a master in the trade or 6 years of experience in the trade, documented on notarized employer experience forms reviewed by the Building and Trades board (first Thursday of each month); approval to test is good for one year. The exam is the ICC mechanical exam through Pearson Vue (about $125 paid to Pearson Vue), 75% to pass, after which the city issues the certification card for $25 (renewal $25 per year). An applicant licensed elsewhere may apply for 'Reciprocation' by submitting a copy of their other-state licenses and an exam score notification of 75% or better from Prometric, Experior, Block or ICC, provided the exam is identical to the one Springfield requires; otherwise they test.

St. Louis County. The Board of Examiners for Mechanical Licensing licenses mechanical apprentices and journeymen and certifies mechanical contractors; applications go through the Accela permitting portal. An applicant approved to test must sit the journeyman exam within one year of approval (Rule 4), a temporary six-month project-specific journeyman license is available for a $45 application fee to applicants who meet the regular criteria (Rule 1), and renewal requires 12 Professional Education Units (24 hours) every three years (Rule 3). The board's rules do not provide for acceptance of another state's license; the only testing exemption (Rule 6) is for pipefitting and sprinkler-fitting journeymen licensed under the county plumbing code. The specific journeyman categories (such as HVAC Servicer-Installer) and the experience hours required to test are not published on the county's pages; contact [email protected].

Kansas City. The city does not issue a separate journeyman HVAC card. City Planning and Development licenses mechanical contractors and requires each to employ a full-time supervisor holding a Kansas City certificate of qualification in the mechanical trade, earned by application with notarized references and a passing score from Prometric or ICC ($60 application, no charge for the first four-year certificate, $181 renewal every four years); comparable exams from other jurisdictions may be accepted if the city deems them equivalent or superior. Non-supervising technicians work under the licensed contractor.

City of St. Louis. The Mechanical Contractors Board of Examiners (Ordinance 62579, City Code 25.10) examines mechanical contractors and journeyman pipefitters; mechanical permits are issued only to contractors licensed by the Building Division's Mechanical Section. No HVAC journeyman license or reciprocity is published.

Out-of-state holders. No Missouri jurisdiction publishes reciprocity with another state's journeyman HVAC license. The practical route is to present an identical ICC or Prometric mechanical exam score where the jurisdiction accepts one (Springfield, and case by case in Kansas City), document experience, and apply locally; otherwise take the local exam.

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Missouri master HVAC technician

Licensed by cities and counties

Verified September 15, 2026· 9 sources

Missouri does not issue a master HVAC license or a statewide mechanical contractor license; the Division of Professional Registration licenses no HVAC or mechanical profession, and unlike the electrical trade there is no voluntary statewide contractor license for HVAC. The master-level credential exists only at the local level under names that vary by jurisdiction: Springfield certifies Master Mechanical craftsmen (4 years as a certified journeyman or 10 years of experience, ICC exam, $50), Kansas City issues a mechanical certificate of qualification to the supervisor who qualifies a licensed mechanical contractor (Prometric or ICC exam, $60 application, $181 four-year renewal), and St. Louis County and the City of St. Louis license mechanical contractors through their boards of examiners. An out-of-state master HVAC license carries no state-level recognition in Missouri, and none of these jurisdictions publish a reciprocity path for it; Springfield accepts an identical ICC, Prometric, Experior or Block exam score in place of retesting and Kansas City may accept a comparable exam it deems equivalent. A master arriving from another state should expect to qualify in each jurisdiction separately and then obtain that jurisdiction's mechanical contractor license to pull permits. EPA Section 608 certification is a separate federal requirement.

How local licensing works in Missouri

How local licensing works. Missouri has no state HVAC license and no statute standardizing local HVAC licensing; each city or county sets its own master, supervisor and contractor requirements.

Springfield. Building Development Services certifies Master Mechanical craftsmen: 4 years as a certified journeyman in the trade or 10 years of satisfactory experience, documented on notarized employer forms and approved by the Building and Trades board; ICC master mechanical exam through Pearson Vue (about $125), 75% to pass; certification card $50 with $50 annual renewal. 'Reciprocation' applicants submit copies of their other-state licenses and an identical-exam score of 75% or better from Prometric, Experior, Block or ICC; otherwise they test.

Kansas City. City Planning and Development licenses mechanical contractors ($55 application, $181 issuance, $181 renewal every four years) whose scope covers heating, duct and ventilation systems, refrigeration maintenance, gas piping to burners and control wiring. Every licensed contractor must employ a full-time supervisor who holds a Kansas City certificate of qualification in the mechanical trade; the certificate requires an application with notarized references and a passing score from a recognized agency such as Prometric or ICC ($60 application, first four-year certificate free, $181 renewal), and the city may accept a comparable exam from another jurisdiction if it deems it equivalent or superior.

St. Louis County. The Board of Examiners for Mechanical Licensing certifies mechanical contractors (a certified contractor list is published) and requires a licensed mechanical contractor bond and, for some applicants, a financial responsibility bond; applications and renewals go through the Accela portal. Master-level exam and experience details are not published on the pages that could be opened.

City of St. Louis. The Mechanical Contractors Board of Examiners (Ordinance 62579, City Code 25.10) reviews each applicant's qualifications for a Mechanical Contractor's license issued by the Building Division; the license is required to pull mechanical permits for boilers, furnaces, exhaust systems and ventilation. Contractors also need the city's graduated business license.

Out-of-state holders. No reciprocity or endorsement path for another state's master HVAC license was found in any of these jurisdictions. The practical route is to present an identical ICC or Prometric master mechanical score where accepted (Springfield; Kansas City case by case), document experience, and apply for the local master certificate and contractor license in each jurisdiction where work will be performed.

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Plumbers

Missouri journeyman plumber

Licensed by cities and counties

Verified September 16, 2026· 6 sources

Missouri has no statewide journeyman plumber license and no state plumbing board. RSMo chapter 341 instead authorizes cities over 15,000 population and first-classification counties to examine and certify plumbers through their own boards of examiners, and the Division of Professional Registration licenses no plumbing profession (the state's only statewide construction credential is the voluntary electrical contractor license). Journeyman plumbers are therefore licensed jurisdiction by jurisdiction: St. Louis County's Board of Plumbing Examiners, the City of St. Louis Plumbers and Drainlayers Board of Examiners, Kansas City's City Planning and Development contractor-licensing program, Springfield's Building Development Services, and other cities and counties that have adopted a plumbing code. There is no statewide reciprocity and no state mechanism to recognize an out-of-state license. Springfield admits an applicant licensed elsewhere on proof of experience plus an identical ICC (Pearson Vue), Prometric, Experior or Block exam score of 75% or better, and Kansas City may accept a comparable exam from another jurisdiction it deems equivalent; the St. Louis County and City of St.

How local licensing works in Missouri

How local licensing works. Missouri regulates plumbers only through local government. RSMo §§ 341.010-341.080 (cities over 15,000) require plumbers to hold a certificate issued after examination by a city board of examiners, and §§ 341.090-341.220 (first-classification counties) let a county create a department and board of plumbing and sewer inspection that licenses master plumbers, journeymen and drainlayers, sets fees and license terms (§ 341.180) and requires master plumber bonds (§ 341.200). Each board writes its own rules, so hours, exams, fees and the treatment of other jurisdictions' licenses differ from place to place, and a plumber must hold the license of each jurisdiction in which they work.

St. Louis County. The Department of Transportation and Public Works' Plumbing Licensing office (41 South Central Avenue, Clayton, 314-615-3741, [email protected]) licenses Journeyman, Master Plumber and Apprentice plumbers and certifies plumbing contractors under the county plumbing code. The Board of Plumbing Examiners normally meets the first Thursday of each month at 8:00 a.m., and renewal carries a PEU (professional education unit) requirement. The county's separate mechanical board exempts pipefitting and sprinkler-fitting journeymen 'licensed under the county plumbing code' from its own test, which shows how tightly the county's trade licenses are tied to its own code.

City of St. Louis. The Building Division's Plumbers and Drainlayers Board of Examiners 'reviews licensing matters, apprentice applications, complaints, and other business related to plumbing and drainlaying work in the City of St. Louis'. Certification requires an application with notarized references and a passing score from a recognized agency such as Prometric or ICC ($60 application, first four-year certificate free, $181 renewal every four years), and the city 'may accept comparable examinations from other jurisdictions if deemed equivalent or superior' to its approved exams. Kansas City does not publish online whether it still issues a separately titled journeyman plumber license, its experience requirement, or any named reciprocity (for example with Johnson County, Kansas); contact the city's permits office.

Springfield. Building Development Services certifies Journeyman Plumbers. Eligibility is 4 years under the supervision of a master plumber or 6 years' experience in the trade, documented on signed, notarized Applicant Experience Forms for every employer (Schedule C or 1099s if self-employed). The packet goes to the board, which meets the first Thursday of each month at 5:00 p.m. in the Busch Building; approval to test is good for one year. The exam is the ICC plumbing exam through Pearson Vue (about $125 paid to Pearson Vue), 75% to pass; the city then issues the Trade Certification Card for $25, renewing at $25 per year. Out-of-state treatment: an applicant licensed in another jurisdiction applies under 'Reciprocity from another jurisdiction' by submitting the same experience documentation plus a copy of an exam score notification of 75% or better from Prometric, Experior, Block or ICC (Pearson Vue), 'the examination must be the identical exam as required by the City of Springfield'; the exam is then not repeated. A license backed by a different exam gives no advantage beyond documenting experience.

Columbia and others. Columbia, St.

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Missouri master plumber

Licensed by cities and counties

Verified September 16, 2026· 6 sources

Missouri issues no statewide master plumber or plumbing contractor license. RSMo chapter 341 leaves plumber licensing to cities over 15,000 and first-classification counties, whose boards examine master plumbers, set fees and license terms and (in counties) require master plumber and master drainlayer surety bonds; no state agency licenses the trade and the voluntary statewide contractor license that exists for electrical work has no plumbing counterpart. The master credential therefore exists only locally: Springfield's Master Plumber certification (4 years as a certified journeyman or 10 years' experience, ICC exam, $50), Kansas City's plumbing contractor license qualified by a supervisor holding a certificate of qualification (Prometric or ICC exam, $60 application, $181 four-year renewal; contractor license $55 application, $181 issuance), St. Louis County's Master Plumber license and certified contractor list, and the City of St. Louis Plumbers and Drainlayers Board of Examiners' master plumber and drainlayer licenses. An out-of-state master plumber license carries no state-level recognition; Springfield accepts an identical ICC, Prometric, Experior or Block exam score of 75% or better in place of retesting and Kansas City may accept a comparable exam it deems equivalent, while the St. Louis County and City of St. A master arriving from another state should expect to qualify in each jurisdiction separately and then obtain that jurisdiction's contractor license and bond to pull permits.

How local licensing works in Missouri

How local licensing works. There is no state plumbing board. Under RSMo chapter 341, city boards of examiners (cities over 15,000) and county boards of plumbing and sewer inspection (first-classification counties) examine master plumbers; § 341.170 sets the county master plumber qualifications, § 341.180 the application fees, license terms and re-examination rules, and § 341.200 requires master plumbers and master drainlayers to post surety bonds. The master license is the credential that lets a plumber pull permits and run a plumbing business, and each jurisdiction issues and enforces its own.

St. Louis County. The Plumbing Licensing office (41 South Central Avenue, Clayton, 314-615-3741) issues Master Plumber licenses and publishes a Certified Contractors list; the Board of Plumbing Examiners meets the first Thursday of each month at 8:00 a.m., and renewals carry PEU continuing-education requirements. Louis.** The Building Division's Plumbers and Drainlayers Board of Examiners licenses master plumbers and drainlayers and reviews licensing matters and complaints for plumbing and drainlaying work in the city; permits are issued to city-licensed contractors. Every licensed contractor must employ a full-time supervisor who holds a Kansas City certificate of qualification in the plumbing trade, obtained on an application with notarized references and a passing score from a recognized agency such as Prometric or ICC ($60 application, first four-year certificate free, $181 renewal); the city 'may accept comparable examinations from other jurisdictions if deemed equivalent or superior'. Kansas City does not publish online whether a separately titled master plumber license, plumbing-specific experience hours or named reciprocity with Kansas jurisdictions exist; contact the city's permits office.

Springfield. Building Development Services certifies Master Plumbers: 4 years as a certified journeyman plumber or 10 years of satisfactory experience in the trade, documented on notarized employer experience forms and approved by the board (first Thursday monthly, 5:00 p.m., Busch Building; approval to test good for one year). The exam is the ICC master plumber exam through Pearson Vue (about $125 paid to Pearson Vue), 75% to pass; the certification card costs $50 with $50 annual renewal, and a master must file a Master Registration form to qualify a contracting business (Master Resignation form on leaving). Out-of-state treatment: 'Reciprocity from another jurisdiction' applicants submit the same experience documentation plus an exam score notification of 75% or better from Prometric, Experior, Block or ICC (Pearson Vue) for the identical exam Springfield requires; otherwise they test. Springfield also certifies Master Gas fitters (4 years as a certified gas journeyman, or 4 years as a master mechanic or plumber plus 2 years as a gas journeyman).

Columbia and others. Columbia, St.

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Contractors

Missouri residential contractor · “Residential Building Contractor / Class C general contractor / construction business license (city-issued)”

Licensed by cities and counties

Verified September 17, 2026· 19 sources

Issued by No state authority; cities and counties license, register or exempt residential contractors

Missouri issues no statewide residential contractor, home builder or remodeler license. The Division of Professional Registration's own list of regulated professions contains exactly one construction trade - Electrical Contractors - and Title XXII of the Revised Statutes, which holds every occupational licensing chapter from 324 to 346, has no chapter for contractors or builders at all. The one statewide construction credential Missouri does offer is the voluntary electrical contractor license under RSMo 324.900 to 324.945, and its own definitions confine it to electrical contracting; there is no building-contractor equivalent, so a residential builder has nothing at state level to apply for or transfer. Plumbers are examined by cities over 15,000 people and by first-classification counties under RSMo chapter 341, again locally rather than by a state board. Housebuilding is therefore regulated jurisdiction by jurisdiction, and Missouri splits sharply in two: Kansas City and Independence run genuine competency programs built on ICC or Prometric examinations, while St. Louis City, St. Louis County, Springfield, Columbia and Jefferson City ask a residential builder for nothing more than a business license and proof of workers' compensation. A contractor moving to Missouri qualifies separately in each place where permits will be pulled, and in the two testing cities the credential that actually travels is a passing score on a recognized national residential-builder examination rather than another state's license.

How local licensing works in Missouri

How it works in Missouri. There is no state contractor board, no state application and no state exam. Each city or county writes its own ordinance, so a builder holds whatever the local jurisdiction requires everywhere it works, and a credential from one Missouri city does not carry into the next of its own force. The single statewide preemption in Missouri construction law is the electrical one: RSMo 324.925 forces every political subdivision to recognize a statewide electrical contractor license and bars it from testing that holder's electrical proficiency. Nothing equivalent exists for builders, and the statute expressly leaves cities free to license and examine in other trades. What that produces is two very different kinds of place. In Kansas City and Independence a residential builder is examined and personally qualified. In St. Louis City, St. Louis County, Springfield, Columbia and Jefferson City the trades are examined and the builder is not - the builder simply buys a business license.

Kansas City. City Planning & Development runs a two-part system under Article XII of the Kansas City Building and Rehabilitation Code, and it is the only place in Missouri with a purpose-built residential builder credential. An individual first earns the Residential Building Supervisor certificate of qualification, which covers "constructing, structurally altering or enlarging any one- or two-family detached dwelling or townhouse including detached accessory buildings in excess of 400 square feet." The applicant files an application with a $60.00 nonrefundable fee and "shall earn a passing score on one of the two recognized exams administered for Kansas City, Missouri: the residential construction (10344) examination administered by Prometric or the standard residential building contractor (W13) examination administered by ICC." The exam is waived where the applicant holds "a passing score on a standard Prometric or ICC examination or other department-approved national testing agency examination comparable in content," documented to the Building Official's satisfaction - and the city states outright that it built the program to match Independence and Johnson County, so "if you have passed a residential builder exam in either of these jurisdictions, you will not be required to retest," and continuing education hours earned there count toward renewal. Being a Missouri-registered engineer or architect does not substitute for the exam. The company then applies for the Residential Building Contractor license, which needs a full-time managerial employee holding the supervisor certificate (the owner may be that person), a business license from the Finance Department, a current Missouri Secretary of State registration and a certificate of insurance carrying at least a $1,000,000 aggregate limit per occurrence and naming the City of Kansas City as additional insured. Fees are $60.00 to apply and $181.00 to issue, with $181.00 quadrennial renewals on both the license and the certificate; the certificate itself is free for its first four years. Applications go through CompassKC; [email protected], (816) 513-1500.

Independence. The city licenses the individual, not the company: "contractor licenses belong to the licensed individual, NOT a company," and "anyone hired to complete permittable work within the City of Independence" needs one. The residential tier is the Class C general contractor license, described as residential only, and the license "covers framing, footings, and general construction." Qualification is one of three things: ICC or Prometric test scores from within the last five years at 75 percent or better; "a current, active license with a jurisdiction that we reciprocate with," which the city defines broadly as "any jurisdiction that issues licenses in a similar fashion"; or, for a general contractor license, a bachelor's degree in engineering, architecture or construction science from an accredited college or university. Licenses expire on December 31 every year with no proration. A business license shows you may trade in the city; the contractor license shows you are qualified to do the work, and you need both. Authorized users may be added to a license, but the holder answers for their work. [email protected], (816) 325-7401.

St. Louis City. The Building Division operates four boards of examiners - electrical, mechanical contractors and pipefitters, plumbers and drainlayers, and sprinkler system contractors - and none of them touches building contractors. A residential builder needs a construction or contracting business license from the License Collector: a state tax number, the application form, clearance from the Collector of Revenue, an occupancy permit from the Building Division, and proof of workers' compensation coverage or a signed statement that the law does not require it. The city also requires that "all general contractors ... furnish a list of the sub-contractors on any job to the License Collector." No exam, experience or bond applies. Building Division, City Hall Room 425, 1200 Market St., (314) 622-3313.

St. Louis County. The county is explicit: "the County does not license general contractors," though it "does verify that out-of-state contractors are registered with the state," and it "does register all repair contractors that obtain permits for repairs from a natural disaster such as a flood or severe storm." What it does license is the trades, through Transportation and Public Works: electrical licensing, mechanical licensing (four contractor categories under the county Mechanical Code) and plumbing licensing, each with its own board, and "the County only issues trade permits to licensed contractors." A homebuilder in unincorporated St. Louis County therefore pulls permits without a county builder credential but must use licensed trade contractors. 41 South Central Ave., 6th Floor, Clayton, 314-615-5184. Note that most of the county's ninety-odd municipalities run their own building departments, so check the city as well.

Springfield. Building Development Services will not issue a permit until "a City-licensed General Contractor (GC) or Trade Master (TM) ... is listed on the permit," so the credential is mandatory - but it is a business license, obtained from the License Division, not a tested qualification. Springfield's testing program covers the crafts only: "electricians, plumbers, gas fitters, and mechanical craftsmen must be tested and certified to afford competence and knowledge of the codes," and those trades may substitute an out-of-jurisdiction exam score of 75 percent or better from Prometric, Experior, Block or ICC where the examination is identical to Springfield's. Contractors who carry workers' compensation file proof of it; those who are not required to carry it sign a notarized exemption statement. Permit desk 417-864-1585, License Division 417-864-1617.

Columbia. Community Development's Building and Site Development division licenses trades only - Trade Apprentice, Electrical Certification, Mechanical Certification and Plumbing Certification - because "electricians, plumbers, gas fitters and mechanical craftsman must be tested and certified," with the tests "administered by a private testing firm according to a regular schedule." There is no builder certification and no board of building examiners. A residential contractor takes out a city business license instead: $0.25 per $1,000 of gross receipts with a $75 annual minimum, a $10,000 annual maximum and a $45 application fee, plus a certificate of workers' compensation insurance for any construction business with one or more employees. Business License Division 573-874-7378.

Jefferson City. "All contractors performing work in Jefferson City must have a local license," but the split is the same as elsewhere: "electrical and plumbing contractors and their employees are required to obtain specific trade licenses directly from the Building Regulations Division," while "all other contractors are directed to the Business License Division to obtain their business license." A residential builder therefore files for the business license and takes no examination. Building Regulations (573) 634-6410, Business License Division (573) 634-6322.

Everywhere else. Missouri's other cities and counties set their own rules, and many require nothing but a permit and proof of insurance. Ask each building department what it licenses before you contract there. If you plan to sit an examination anywhere in Missouri, the practical move is the ICC standard residential building contractor (W13) or the Prometric residential construction (10344) paper, because those are the two Kansas City names outright and the same scores satisfy Independence, and a passing result documented from an approved agency is the nearest thing Missouri has to a transferable builder credential.

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Missouri general contractor · “Class A or B general contractor / construction business license (city-issued)”

Licensed by cities and counties

Verified September 17, 2026· 18 sources

Issued by No state authority; cities and counties license or register commercial building contractors

Missouri has no statewide general, commercial or unlimited building contractor license, so there is nothing at state level for an out-of-state general contractor's license to transfer into and no NASCLA route to take, because Missouri is not a NASCLA participating state. Title XXII of the Revised Statutes, which contains every occupational licensing chapter, has no contractor or builder chapter, and the Division of Professional Registration regulates only one construction trade, electrical contractors. That voluntary statewide electrical contractor license under RSMo 324.900 to 324.945 is often mistaken for a general contractor credential; it is not. Its statutory definitions reach electrical contracting alone, and RSMo 324.925, which forces every city and county to honor it and bars them from testing a holder's proficiency, applies to electrical work only and expressly leaves local building regulation untouched. Commercial building is therefore governed city by city, and only one of Missouri's larger jurisdictions examines commercial builders: Independence issues Class A and Class B general contractor licenses to individuals on an ICC or Prometric score, a reciprocal license or a construction-related degree. Kansas City runs seventeen contractor license categories and none of them is a commercial building contractor - its own bulletin says a business license for construction "is the only city license required" for commercial building permits - and St. Louis City, St. Louis County, Springfield, Columbia and Jefferson City likewise license the trades and ask a commercial builder for nothing more than a business license.

How local licensing works in Missouri

How it works in Missouri. No Missouri agency licenses general, commercial or unlimited building contractors, and there is no state qualifying party, no state business-and-law exam and no NASCLA acceptance to rely on. Cities and counties control commercial construction through the building permit, and almost all of them regulate the electrical, mechanical, plumbing and fire trades rather than the builder. The one statewide rule worth knowing is RSMo 324.925: a political subdivision must recognize the state's voluntary electrical contractor license in place of its own and may not test that holder's electrical proficiency, on pain of having its local sales tax distributions withheld. The statute is limited to electrical contracting - it creates no equivalent obligation for builders, and it expressly preserves each subdivision's power to implement codes, require business licenses, issue permits and inspect work. So a general contractor arriving in Missouri qualifies separately in each jurisdiction, and the only genuinely portable credential is a passing score on a national contractor examination, which matters in exactly one of the places below.

Independence. The clearest commercial program in the state, and the only one of the seven that examines a commercial builder. The city licenses the individual rather than the business - "contractor licenses belong to the licensed individual, NOT a company" - and the general contractor license "covers framing, footings, and general construction" in three classes: Class A, residential and commercial; Class B, residential and commercial up to three stories; Class C, residential only. Qualification is ICC or Prometric test scores from within the last five years at 75 percent or better, or "a current, active license with a jurisdiction that we reciprocate with," which the city defines as "any jurisdiction that issues licenses in a similar fashion," or a bachelor's degree in engineering, architecture or construction science from an accredited college or university. Only a master license holder may apply for or be named on a building permit; journeymen may not. Licenses expire December 31 annually with no proration, and a business license is required in addition. [email protected], (816) 325-7401.

Kansas City. City Planning & Development enforces Article XII of the Kansas City Building and Rehabilitation Code through seventeen categories of contractor license - demolition, electrical, elevator, fire protection, gas-fired appliance, mechanical, pipe fitting, plumbing, residential building and sign - and there is no commercial or general building category among them. The city says so directly in its residential licensing bulletin: "a Business License for Construction is the only city license required for a contractor performing swimming pool construction, uncovered deck construction, retaining walls, non-structural remodeling, installation of roof mounted solar panels with no or limited structural work, and commercial building permits." A commercial builder therefore buys the business license from the Finance Department, keeps a current Missouri Secretary of State registration, and makes sure each licensed trade on the job holds its own Kansas City contractor license and employs a certificate-of-qualification supervisor. Where the general contractor self-performs a regulated trade, the full route applies: a $60.00 certificate application with notarized reference letters and a recognized exam score, applicant at least 21 with a high school diploma or GED and documented experience, then a $60.00 application and $181.00 issuance fee for the company license, renewed quadrennially at $181.00. [email protected], (816) 513-1500.

St. Louis City. The Building Division runs four boards of examiners - the Committee of Electrical Examiners, the Mechanical Contractors Board of Examiners, the Plumbers and Drainlayers Board of Examiners and the Sprinkler System Contractors Board of Examiners - and none of them covers building contractors. A commercial general contractor takes out a construction or contracting business license from the License Collector: state tax number, application, clearance from the Collector of Revenue, an occupancy permit from the Building Division, and proof of workers' compensation coverage or a signed statement that it is not legally required. "All general contractors are required to furnish a list of the sub-contractors on any job to the License Collector." There is no exam, bond or experience review. Building Division, City Hall Room 425, 1200 Market St., (314) 622-3313.

St. Louis County. "The County does not license general contractors." It "does verify that out-of-state contractors are registered with the state," and it "does register all repair contractors that obtain permits for repairs from a natural disaster such as a flood or severe storm." Its licensing effort goes into the trades: electrical, mechanical (four contractor categories under the county Mechanical Code, chapter 1108 SLCRO) and plumbing, each with a licensing board, and "the County only issues trade permits to licensed contractors." Commercial permits for unincorporated county land come from Transportation and Public Works at 41 South Central Ave., 6th Floor, Clayton, 314-615-5184; inside the county's many municipalities, check the city's own building department too.

Springfield. A permit will not issue until "a City-licensed General Contractor (GC) or Trade Master (TM)" is named on it, so the general contractor credential is compulsory - but it is a business license from the License Division rather than a tested qualification. The city's examining program covers electricians, plumbers, gas fitters and mechanical craftsmen only, who must be "tested and certified to afford competence and knowledge of the codes" and who may present an identical Prometric, Experior, Block or ICC examination passed at 75 percent or better in another jurisdiction. Contractors file proof of workers' compensation or sign a notarized exemption statement. Permit desk 417-864-1585; License Division 417-864-1617.

Columbia. Building and Site Development certifies trades only - Trade Apprentice, Electrical, Mechanical and Plumbing - with tests "administered by a private testing firm according to a regular schedule," and the city maintains boards of electrical, plumbing and mechanical examiners but none for builders. A commercial contractor holds a city business license at $0.25 per $1,000 of gross receipts, minimum $75 and maximum $10,000 a year, plus a $45 application fee, and files a certificate of workers' compensation insurance if it has one or more employees. Business License Division 573-874-7378.

Jefferson City. "All contractors performing work in Jefferson City must have a local license," but only "electrical and plumbing contractors and their employees are required to obtain specific trade licenses directly from the Building Regulations Division"; "all other contractors are directed to the Business License Division to obtain their business license." A commercial builder files for the business license and sits no examination. Building Regulations (573) 634-6410, Business License Division (573) 634-6322.

Everywhere else. Other Missouri cities and counties write their own ordinances, and outside city limits many rural counties have no building permit program at all. Before bidding, ask each jurisdiction whether it licenses builders or only the trades, whether it will accept an ICC or Prometric score in place of its own test, and what business license, workers' compensation proof and insurance it requires. Expect to hold a separate credential in every jurisdiction where you pull permits.

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Home Inspectors

Missouri home inspector

No individual license at this level

Verified September 17, 2026· 10 sources

Issued by No Missouri home inspector licensing authority (the Division of Professional Registration issues no home inspector credential)

Missouri issues no home inspector license, certificate or registration, so an inspector moving here has no state credential to apply for, no examination to sit and nothing to transfer from another state. The Division of Professional Registration publishes the full list of the professions Missouri does register, from certified public accountants, architects, professional engineers, land surveyors, landscape architects and interior designers through real estate agents, brokers and appraisers to private investigators, athlete agents and professional wrestlers, and home inspection is not on it; the only construction trade on the entire list is Electrical Contractors. Title XXII of the statutes, Occupations and Professions, tells the same story: its chapters run from 324 to 346 and none of them concerns home inspectors. The legislature has been asked to change this and has not: House Bill 1066 of 2019 would have added fourteen new sections to chapter 339 creating a Missouri home inspectors board, an apprentice tier and a statutory definition of home inspection as "the process by which a home inspector, for payment, visually examines the readily accessible systems and components of a residential building and describes such systems in writing", but chapter 339 today contains no section in the 339.900 to 339.939 range the bill would have created. No Missouri city fills the gap either. The cities that license occupations in this space license the building trades, not the people who inspect them: St. Louis runs boards of examiners for electrical, mechanical, plumbing and drainlaying, and sprinkler contractors, and Springfield certifies journeyman and master electricians, plumbers, mechanics and gas fitters. An inspection business may still need an ordinary local business license, such as the City of St. Louis graduated business license, but that is a revenue and business registration rather than a credential in this trade. Because Missouri holds no home inspector examination, the National Home Inspector Examination has nothing to stand in for here, and any "certified" designation an inspector advertises comes from a private trade association rather than from the state. What binds a Missouri home inspector instead is general law: the Merchandising Practices Act, at RSMo 407.020, makes unlawful any deception, fraud, false pretense, false promise, misrepresentation, unfair practice or concealment, suppression or omission of a material fact in connection with the sale or advertisement of merchandise, which RSMo 407.010 defines to include services, and RSMo 407.025 gives a buyer who purchased primarily for personal, family or household purposes and suffered an ascertainable loss a civil action for damages, punitive damages, attorney's fees and equitable relief. Beyond that it is the written pre-inspection agreement and ordinary contract and negligence law that set the duty owed, because Missouri has enacted no statutory standard of care for home inspectors and no statute governing the content or form of an inspection report. One practical boundary: any repair work that comes out of a report has to go to a Missouri-licensed electrical contractor or to whichever trade the city of the job licenses, and on radon the Department of Health and Senior Services only recommends, and does not require, a contractor certified by the National Radon Proficiency Program or the National Radon Safety Board.

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