Iowa Contractor Licenses: Updated Requirements Guide
Iowa regulates most construction trades at the state level through the Department of Inspections, Appeals and Licensing (DIAL) and its affiliated boards. Electricians are licensed by the Iowa Electrical Examining Board, and plumbing, mechanical/HVAC-refrigeration, hydronic, and related disciplines are licensed by the Plumbing & Mechanical Systems Board (PMSB). Separate statewide registration is required for construction contractors under Iowa Code chapter 91C, and asbestos abatement is licensed and permitted through DIAL’s asbestos program.
This centralized structure means a credential from the appropriate Iowa board typically authorizes work statewide, subject to local permitting and inspections. We highlight several representative licenses and authorities for Iowa below; this guide is updated periodically as additional details are clarified by the boards or requested by readers.
Use the quick navigation to jump to your trade. Each section summarizes who regulates the license, eligibility, examinations, fees, insurance, and renewal timelines—and points you to the official Iowa sources for definitive requirements.
Quick Navigation
Overview of Iowa Contractor Licensing
The Iowa Department of Inspections, Appeals and Licensing (https://dial.iowa.gov) serves as the umbrella agency for statewide contractor-related programs. Under DIAL, the Iowa Electrical Examining Board licenses electricians and electrical contractors pursuant to Iowa Code chapter 103, and the Plumbing & Mechanical Systems Board (PMSB) licenses plumbers, mechanical/HVAC-refrigeration, sheet metal, and hydronic professionals and contractors under Iowa Code chapter 105.
All construction contractors earning at least $2,000 annually from construction work in Iowa must register with DIAL’s Contractor Registration program (Iowa Code chapter 91C). Registration integrates with PMSB contractor licensing for plumbing and mechanical businesses and requires documentation such as workers’ compensation (if applicable), unemployment insurance account number, and—for out-of-state contractors—a $25,000 bond.
Iowa also regulates asbestos abatement. Individual asbestos workers and contractor/supervisors must hold DIAL-issued asbestos licenses, and businesses performing asbestos abatement must hold an asbestos abatement business permit. These credentials are based on specific EPA-compliant training and annual refreshers under Iowa Administrative Code chapter 875-155.
Browse all Iowa contractor license practice tests →
Electrician Licenses in Iowa
Iowa regulates electrical work with 11 license types administered by the Iowa Electrical Examining Board at DIAL. Licensure spans entry-level (Unclassified Person), apprentice, residential and journeyperson, master levels, and business-level contractor credentials. Scope of practice is defined in Iowa Code chapter 103 and board rules.
Electrical Contractor
Classification: Contractor (statewide)
Regulatory Authority
Iowa Electrical Examining Board, Department of Inspections, Appeals and Licensing — Electrical Licensing
Who Can Apply / Requirements
- Hold an Iowa Class A or Class B Master Electrician license, or employ a licensed Class A or B Master Electrician.
- Register as a construction contractor with DIAL under Iowa Code chapter 91C.
Examination
No separate contractor exam is listed for this credential. Technical exams occur at the master/journeyperson levels.
Fees
Initial and renewal fees are set by the Board; amounts may be prorated based on the three-year cycle.
Insurance
General liability coverage is required for electrical contracting businesses; guidance commonly cites at least $1,000,000. Workers’ compensation is required if the business has employees.
Renewal
Every 3 years, aligned to the electrical licensing cycle.
Contact the Iowa Electrical Examining Board to confirm fees, insurance minimums, experience requirements, and renewal details before applying. See: Electrical Licensing FAQs.
Residential Electrical Contractor
Classification: Contractor (statewide)
Regulatory Authority
Iowa Electrical Examining Board, Department of Inspections, Appeals and Licensing — Electrical Licensing
Who Can Apply / Requirements
- Hold or employ an Iowa Residential Master Electrician.
- Register as a construction contractor with DIAL under Iowa Code chapter 91C.
Examination
No separate contractor exam is listed; technical competency is established through residential master/journeyperson examinations.
Fees
Set by the Board; amounts may be prorated within the three-year cycle.
Insurance
General liability coverage is required; residential contractors typically carry at least $1,000,000. Workers’ compensation is required if the business has employees.
Renewal
Every 3 years.
Contact the Iowa Electrical Examining Board to confirm fees, insurance minimums, experience requirements, and renewal details before applying. See: Electrical Licensing FAQs.
Class A Master Electrician
Classification: Master (statewide)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- At least one year as a licensed Class A or B Journeyman plus substantial journeyperson-level experience as required by Iowa Code chapter 103.
- Typical education pathway: completion of a registered electrical apprenticeship or board-approved postsecondary program prior to journeyperson licensure.
- Minimum age 18.
Examination
Board-approved written master examination over the National Electrical Code; minimum passing score 70. Exam provider and scheduling are coordinated through the Board’s licensing system.
Fees
- Initial License: $375
- Renewal: $375
Insurance
Not required at the individual master level; business-level coverage applies to contractor entities.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle in Board-approved topics (including electrical code).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees before applying.
Exam Prep: PDF study guide with 1,500-2,500 questions, complete answer keys, and reference locators to exact code sections. Study offline; no time or use limits. Iowa Master Electrician Practice Test.
Class B Master Electrician
Classification: Master (statewide; authority may be limited by ordinance compared to Class A)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Electrical experience meeting Board criteria; training often includes apprenticeship or equivalent.
- Minimum age 18.
Examination
Board-approved master-level written exam over the National Electrical Code; passing score set by the Board.
Fees
- Initial License: $375
- Renewal: $375
Insurance
Not required at the individual master level.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle (Board-approved topics).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees and any local acceptance considerations for Class B credentials.
Residential Master Electrician
Classification: Master (residential scope, statewide)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Experience as a Residential Electrician or journeyperson-level residential work per Board rules.
- Residential training through apprenticeship or postsecondary program plus practical wiring experience.
- Minimum age 18.
Examination
Board-approved residential master exam focusing on residential installations and the NEC; minimum passing score 70.
Fees
- Initial License: $375
- Renewal: $375
Insurance
Not required at the individual master level.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle (residential code and Board-approved topics).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees before applying.
Exam Prep: PDF study guide with 1,500-2,500 questions, complete answer keys, and reference locators to exact code sections. Study offline; no time or use limits. Iowa Master Residential Electrician Practice Test.
Class A Journeyman Electrician
Classification: Journeyperson (statewide)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Completion of at least four years in a U.S. DOL-registered electrical apprenticeship or equivalent Board-recognized training.
- Minimum age 18.
Examination
State journeyperson written examination over the NEC; minimum passing score 70. Exam approval and scheduling occur through the Board’s licensing system.
Fees
- Initial License: $75
- Renewal: $75
Insurance
Not required at the individual journeyperson level.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle (Board-approved topics).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees before applying.
Exam Prep: PDF study guide with 1,500-2,500 questions, complete answer keys, and reference locators to exact code sections. Study offline; no time or use limits. Iowa Journeyman Electrician Practice Test.
Class B Journeyman Electrician
Classification: Journeyperson (statewide; local acceptance may differ from Class A)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Substantial apprenticeship or equivalent practical experience per Iowa Code chapter 103 and Board rules.
- Minimum age 18.
Examination
Board-approved journeyperson exam; passing score set by the Board.
Fees
- Initial License: $75
- Renewal: $75
Insurance
Not required at the individual journeyperson level.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle (Board-approved topics).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees and to verify any local acceptance considerations for Class B credentials.
Residential Electrician
Classification: Journeyperson (residential scope, statewide)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Residential electrical apprenticeship and practical experience as defined by Board rule.
- Minimum age 18.
Examination
Board-approved residential exam focused on residential wiring and applicable NEC sections.
Fees
- Initial License: $75
- Renewal: $75
Insurance
Not required at the individual journeyperson level.
Renewal
- Every 3 years
- Continuing Education: 18 hours per cycle (Board-approved topics).
Contact the Iowa Electrical Examining Board to confirm application, examination, and late fees before applying.
Exam Prep: PDF study guide with 1,500-2,500 questions, complete answer keys, and reference locators to exact code sections. Study offline; no time or use limits. Iowa Residential Electrician Practice Test.
Apprentice Electrician
Classification: Apprentice (statewide)
Regulatory Authority
Iowa Electrical Examining Board — Apply for an Electrical License
Who Can Apply / Requirements
- Employment and training under a licensed master or journeyperson electrician, typically within a U.S. DOL-registered apprenticeship.
- Enrollment in a registered apprenticeship or recognized postsecondary program.
- Minimum age 18.
Examination
No exam for initial apprentice registration.
Renewal
Annually; maintain registration while progressing toward journeyperson eligibility.
Contact the Iowa Electrical Examining Board to confirm current fees, documentation, and renewal details for apprentice registration.
Special Electrician
Classification: Specialty (limited-scope work, statewide)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Demonstrated experience in a defined specialty area as permitted under Board rules.
- Minimum age 18.
Examination
No exam is specified for this limited-scope credential in the Board FAQ.
Renewal
Every 3 years; any continuing education requirements are set by the Board for the specialty category.
Contact the Iowa Electrical Examining Board to confirm fees, insurance, and detailed renewal/CE requirements for your specialty category.
Unclassified Person
Classification: Entry-level (statewide; supervised work only)
Regulatory Authority
Iowa Electrical Examining Board — Electrical Licensing
Who Can Apply / Requirements
- Entry-level role performing limited tasks under the direct supervision of a licensed electrician within Board-defined limits.
- Minimum age 18.
Examination
No exam is required for this supervised, introductory status.
Renewal
Annually, subject to Board rules for supervised ratios and allowable tasks.
Contact the Iowa Electrical Examining Board to confirm current registration fees and any limits on duration or scope for unclassified persons.
Plumbing Licenses in Iowa
The Iowa Plumbing & Mechanical Systems Board (PMSB) licenses plumbing professionals statewide under Iowa Code chapter 105. Core credentials include journeyperson and master plumber, plus the PMSB contractor license for plumbing businesses, which integrates with DIAL’s contractor registration process and insurance requirements.
Journeyperson Plumber
Classification: Journeyperson (statewide)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — Journeyperson Licensure
Who Can Apply / Requirements
- At least four years of practical experience in a U.S. DOL-registered plumbing apprenticeship or equivalent experience meeting Board standards.
- Minimum age 18.
Examination
State journeyperson exam approved by PMSB. Applicants first submit an Exam Approval Application and, upon approval, schedule with the Board’s approved testing provider (currently administered through Kirkwood Community College).
Fees
- Exam Approval/Application: $35 (per discipline)
- Examination: $99 (paid to testing provider)
- Initial License: $180
- Renewal: $180
Insurance
Not required at the individual journeyperson level.
Renewal
Every 3 years; continuing education requirements are set by PMSB.
Contact PMSB to confirm current CE hours/topics and any late fee policies before applying or renewing.
Master Plumber
Classification: Master (statewide)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — About PMSB
Who Can Apply / Requirements
- Experience as a licensed journeyperson plumber and additional qualifying work as set by PMSB (commonly at least two years at the journeyperson level).
- Minimum age 18; completion of apprenticeship or equivalent training plus journeyperson experience.
Examination
State master plumbing exam covering the Uniform Plumbing Code and Iowa rules; passing score established by the Board.
Fees
- Application: $35
- Initial License: $240
- Renewal: $240
Insurance
Not required at the individual master level.
Renewal
Every 3 years; CE requirements are set by PMSB.
Contact PMSB to confirm any examination fee paid to the provider, CE hours/topics, and late fee policies.
PMSB Contractor License (Plumbing Contractor)
Classification: Contractor (statewide; integrated with DIAL Contractor Registration)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board and DIAL Contractor Registration — Contractors (PMSB + Registration)
Who Can Apply / Requirements
- Be or employ an Iowa licensed Master Plumber.
- Complete joint PMSB contractor license and DIAL construction contractor registration (Iowa Code chapter 91C).
- Provide required documentation: unemployment insurance account number, NAICS code, insurance certificates, and (if out-of-state) a $25,000 bond for registration.
Examination
No separate contractor exam; competency is established at the master/journeyperson level.
Fees
- Application/Initial License: $250
- Renewal: $250
- Contractor Registration: $50 annually or $150 for a three-year registration (per Iowa Administrative Code 481-465)
Insurance
General liability (at least $500,000 typical) and workers’ compensation if the business has employees. Out-of-state contractors must post a $25,000 bond for registration.
Renewal
Generally aligned to a three-year contractor license/registration cycle; maintain insurance and master-in-responsible-charge throughout.
Contact PMSB/DIAL to confirm current insurance minimums, fee proration, and any late/administrative surcharges.
HVAC Licenses in Iowa
Mechanical and HVAC-refrigeration professionals are licensed statewide by PMSB under Iowa Code chapter 105. Iowa offers journeyperson-level credentials in HVAC-refrigeration and mechanical, plus a master mechanical license that covers mechanical, HVAC-refrigeration, sheet metal, and hydronic scopes without separate restricted mechanical licenses.
Journeyperson HVAC-Refrigeration
Classification: Journeyperson (statewide)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — Journeyperson Licensure
Who Can Apply / Requirements
- Four years in a registered HVAC-refrigeration apprenticeship or equivalent training and experience per chapter 105.
- Minimum age 18.
Examination
State journeyperson HVAC-refrigeration exam; applicants submit an Exam Approval Application and, once approved, schedule with PMSB’s testing provider (administered via Kirkwood Community College).
Fees
- Exam Approval/Application: $35
- Examination: $99
- Initial License: $180
- Renewal: $180
Insurance
Not required at the individual journeyperson level.
Renewal
Every 3 years; CE requirements are set by PMSB.
Contact PMSB to confirm current CE hours/topics and any late fee policies before applying or renewing.
Journeyperson Mechanical License
Classification: Journeyperson (statewide)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — Iowa Code Chapter 105
Who Can Apply / Requirements
- Four years of apprentice-level mechanical experience and either:
- Pass the journeyperson mechanical examination, or
- Hold journeyperson HVAC-refrigeration and hydronic exam passes that qualify for mechanical licensure without a separate mechanical exam (per Iowa Code section 105.10).
- Minimum age 18.
Examination
Journeyperson mechanical exam or combination of HVAC-refrigeration + hydronic exams as permitted by law.
Fees
- Exam Approval/Application: $35
- Examination: $99
- Initial License: $180
- Renewal: $180
Insurance
Not required at the individual journeyperson level.
Renewal
Every 3 years; CE requirements set by PMSB.
Contact PMSB to confirm CE hours/topics, late fees, and documentation needed when qualifying via multiple exam pathways.
Master Mechanical Professional
Classification: Master (statewide)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — Iowa Code § 105.10
Who Can Apply / Requirements
- Significant journeyperson mechanical experience plus additional qualifying work as set by PMSB.
- Holders may design, install, and repair mechanical, HVAC-refrigeration, sheet metal, and hydronic systems without additional restricted mechanical licenses.
- Minimum age 18.
Examination
State master mechanical examination covering comprehensive mechanical/HVAC systems and Iowa rules; passing score established by the Board.
Fees
- Application: $35
- Initial License: $240
- Renewal: $240
Insurance
Not required at the individual master level.
Renewal
Every 3 years; CE requirements are set by PMSB.
Contact PMSB to confirm examination fee handling, CE hours/topics, and any late fee policies.
General Contractor Licenses in Iowa
Iowa does not issue a separate, trade-specific “general contractor” competency license. Instead, construction businesses must register with DIAL’s Contractor Registration program under Iowa Code chapter 91C if they earn at least $2,000 per year from construction work in Iowa. Registration may be completed annually for $50 or for a three-year term at $150 (Iowa Administrative Code 481-465).
Statewide Contractor Registration (Applies to General Contractors)
Regulatory Authority
DIAL Contractor Registration — Contractors | Online Registration
Who Must Register
- Any construction contractor earning $2,000 or more annually from construction work in Iowa, including general building, remodeling, and specialty construction.
- Plumbing and mechanical contractors complete a joint PMSB contractor license + DIAL registration application.
Documentation
- Iowa unemployment insurance account number and NAICS business activity code.
- Workers’ compensation coverage if the business has employees.
- Out-of-state contractors must post a $25,000 bond to register.
Fees and Renewal
- $50 annual registration or $150 three-year registration (per 481-465 IAC).
- Renew by the chosen term; keep insurance/bonding current as applicable.
Roofing Licenses in Iowa
Iowa does not have a separate statewide roofing trade license. Roofing contractors performing construction work in Iowa must register with DIAL as construction contractors under chapter 91C ($50 annually or $150 for three years). Businesses with employees must carry workers’ compensation; out-of-state roofing contractors must post a $25,000 bond to register.
If roofing work includes activities regulated under other boards (for example, mechanical alterations requiring PMSB licensure or electrical connections within the scope of the Electrical Examining Board), the appropriate state license(s) from those boards are required in addition to contractor registration. Always verify scope and permitting with the local building department for the project location.
Specialty Trade Licenses in Iowa
Iowa regulates additional specialty activities at the state level. Asbestos abatement requires individual worker and contractor/supervisor licenses and a business abatement permit for firms. PMSB also offers a medical gas piping installation certification for properly licensed plumbing/mechanical professionals who complete approved training and assessment.
Asbestos Abatement Worker License
Classification: Worker (statewide)
Regulatory Authority
Iowa Division of Labor / DIAL Asbestos Licensing — Asbestos Program
Who Can Apply / Requirements
- Completion of initial four-day asbestos abatement worker training (EPA-compliant) and annual one-day worker refresher training.
- Physician certification and respirator fit testing as required by rule.
- Minimum age 18.
Examination
No written exam specified; licensure is based on training and medical/fit test documentation.
Fees
- Application/Initial License: $20
- Annual Renewal: $20
Renewal
Annually; must complete required refresher training each year.
Contact DIAL’s Asbestos Program to confirm current training provider approvals, documentation, and any updated fee schedules.
Asbestos Abatement Contractor/Supervisor License
Classification: Contractor/Supervisor (statewide)
Regulatory Authority
Iowa Division of Labor / DIAL Asbestos Licensing — Asbestos Program
Who Can Apply / Requirements
- Completion of five-day contractor/supervisor training (EPA-compliant) and annual one-day contractor/supervisor refresher.
- Physician certification and respirator fit testing as required by rule.
- Minimum age 18.
Examination
No written exam specified; credential is based on training and medical/fit test documentation.
Fees
- Application/Initial License: $50
- Annual Renewal: $50
Renewal
Annually; complete required refresher training each year.
Contact DIAL’s Asbestos Program to confirm current training approvals, documentation, and any updated fee schedules.
Asbestos Abatement Business Permit
Classification: Business Permit (statewide)
Regulatory Authority
Iowa Department of Inspections, Appeals and Licensing — Asbestos Permits
Who Can Apply / Requirements
- Required for any business performing asbestos removal or encapsulation (except when only at its own facilities).
- Employ appropriately licensed asbestos workers and contractor/supervisors.
- Maintain insurance appropriate for asbestos projects (general liability and workers’ compensation).
Fees
- Application/Initial Permit: $500 (non-refundable)
- Annual Renewal: $500
Renewal
Annual (or as set by DIAL for asbestos permits); maintain staff licensing and insurance continuously.
Contact DIAL’s Asbestos Program to confirm current permit documentation and insurance specifications.
Medical Gas Piping Installation Certification
Classification: Certification (statewide; for properly licensed plumbing/mechanical professionals)
Regulatory Authority
Iowa Plumbing & Mechanical Systems Board (PMSB), DIAL — About PMSB
Who Can Apply / Requirements
- Hold appropriate Iowa plumbing or mechanical licensure.
- Complete approved medical gas piping installation training and meet PMSB experience criteria (Iowa Code chapter 105).
Examination
Board-approved medical gas assessment/exam following completion of required training; passing standard set by PMSB.
Renewal
As specified by PMSB; updates to medical gas codes and standards may be required via continuing education.
Contact PMSB to confirm fees, renewal timing, and approved training/exam providers for medical gas certification.
Application Process
- Create an online licensing account through the appropriate DIAL portal (for example, iowaelectrical.gov for electrical licenses or the PMSB online system for plumbing and mechanical licenses).
- Complete the license application checklist for the desired trade and classification, including personal information, lawful presence, discipline selection, and disclosure of criminal convictions.
- Submit required documentation, such as proof of apprenticeship or experience, education records, and any supporting affidavits for journeyperson or master-level licensure.
- For licenses requiring examination, file an Exam Approval Application with the Board and pay the exam approval fee per trade discipline.
- Wait for Board review and approval; upon approval, follow instructions to schedule the examination with the Board’s approved testing provider and pay the exam fee directly to the provider.
- After passing the examination, submit post-examination licensure application and pay the initial license fee, which may be prorated based on the three-year licensing cycle.
- For contractor and business permits, complete joint applications where required, supply unemployment insurance account numbers, NAICS codes, and insurance or bond documentation, then pay the registration or license fees.
- Maintain licenses by renewing on the three-year cycle (or annual cycle for contractor registration and asbestos licenses) and completing any required continuing education.
Timeline: Initial license processing for trade licenses typically takes 2–4 weeks after a complete application and exam approval; contractor registration is usually processed within a few weeks once all documentation and the $50 fee are submitted.
Reciprocity and Endorsement
Iowa’s trade boards consider reciprocity or licensure by endorsement on a case-by-case basis. Applicants generally must show an active license in good standing from another jurisdiction, demonstrate substantially equivalent education and experience, and meet Iowa Code chapters 103 (electrical) or 105 (plumbing/mechanical). Exams may be waived when the out-of-state credential aligns with Iowa standards, but contractor registration under chapter 91C is still required for construction businesses.
Frequently Asked Questions
How long does it take to get a contractor license or registration in Iowa?
Trades: Most electrical/plumbing/mechanical licenses issue within about 2–4 weeks after exam approval and receipt of a complete application. Contractor Registration: DIAL typically processes registrations within a few weeks once all documentation (including insurance and, if applicable, bond) and the $50 fee are submitted.
Can I transfer my license from another state to Iowa?
Possibly. The Iowa Electrical Examining Board and PMSB review reciprocity/endorsement requests individually. Expect to provide proof of an active license in good standing, education/experience records, and any other documentation the Board requires. Even with reciprocity, construction contractors must complete DIAL Contractor Registration under chapter 91C.
What happens if I fail a state exam?
Retake policies, waiting periods, and fees are set by the Board and its approved testing provider. Follow the instructions in your exam approval notice or contact the relevant Board for current retake procedures.
Do I need insurance?
Yes, at the business level where applicable. Electrical and plumbing/mechanical contractor entities must maintain general liability (commonly at least $500,000 for PMSB contractors; electrical contractors often carry $1,000,000) and workers’ compensation when they have employees. Out-of-state construction contractors must also post a $25,000 bond to register under chapter 91C.
How do I renew my Iowa trade license?
Electrical and plumbing/mechanical licenses renew every 3 years. Continuing education is required for many credentials (for example, electricians typically complete 18 hours per cycle). Contractor Registration renews annually for $50 or on a three-year $150 option. Asbestos worker/supervisor licenses and abatement business permits renew annually.
Do cities still have a role if licensing is statewide?
Yes. While professional licensure is statewide, local jurisdictions handle building permits, inspections, and code administration. Always verify local permitting, inspection scheduling, and applicable code editions with the city or county where the project is located.
Where can I find practice tests for Iowa exams?
We offer comprehensive PDF practice tests for Iowa license exams. Materials typically include 1,500–2,500 code-relevant questions, answer keys for every question, and reference locators pointing to exact code sections. Study offline at your own pace—no time or use limits. Browse Iowa contractor practice tests.
Iowa · Practice tests
Iowa contractor license practice tests
The Iowa practice tests we publish today: comprehensive PDF guides, typically 1,500 to 2,500 questions each, with full answer keys and reference locators to the exact code sections. We add new tests regularly, so if your license isn’t listed here, contact us and we’ll build it.
- Business, Law, and Project Management (NASCLA) Reference Practice Test
- Installing Hardwood Flooring NOFMA - Reference Practice Test
- Iowa Disconnecting and Reconnecting AC and Refrigeration Systems Practice Test
- Iowa Journeyman Electrician License Practice Test
- Iowa Master Electrician License Practice Test
- Iowa Master Residential Electrician License Practice Test
- Iowa Residential Electrician License Practice Test
- National Electrical Code (NEC) 2017 Practice Test
Related Official Resources
Official Sources for Further Details:
-
Iowa Electrical Examining Board – Electrical Licensing
https://dial.iowa.gov/licenses/building/electrical-licensing
Official Board Site | Accessed: 2026-09-07 -
Iowa Electrical Examining Board – Electrical Licensing FAQs
https://dial.iowa.gov/licenses/building/electrical-licensing/electrical-licensing-faqs
Official Board Site | Accessed: 2026-09-07 -
Apply for an Electrical License – Iowa Electrical Examining Board
https://dial.iowa.gov/licenses/building/electrical-licensing/how-do-i-apply-electrical
Official Board Site | Accessed: 2026-09-07 -
Iowa Code Chapter 103 – Electricians and Electrical Contractors
https://www.legis.iowa.gov/docs/code/2026/103.html
State Statute | Accessed: 2026-09-07 -
Plumbing & Mechanical Systems Board – About
https://dial.iowa.gov/boards-0/plumbing-mechanical/about
Official Board Site | Accessed: 2026-09-07 -
Plumbing & Mechanical Systems Licensure – Journeyperson License
https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure-2
Official Board Site | Accessed: 2026-09-07 -
Plumbing & Mechanical Systems Licensure – General Information
https://dial.iowa.gov/licenses/building/plumbing-mechanical/plumbing-licensure
Official Board Site | Accessed: 2026-09-07 -
Iowa Code Chapter 105 – Plumbers, Mechanical Professionals, and Contractors
https://www.legis.iowa.gov/docs/code/2026/105.html
State Statute | Accessed: 2026-09-07 -
Iowa Code Section 105.10 – License or certification required — exceptions
https://www.legis.iowa.gov/docs/code/105.10.pdf
State Statute | Accessed: 2026-09-07 -
Contractor Registration – Iowa Department of Inspections, Appeals and Licensing
https://dial.iowa.gov/licenses/building/contractors
Official Department Site | Accessed: 2026-09-07 -
Register as a Contractor – Online Application
https://dial.iowa.gov/licenses/building/contractors/how-do-i-contractor-registration
Official Department Site | Accessed: 2026-09-07 -
Iowa Administrative Code Chapter 481-465 – Contractor Registration
https://www.legis.iowa.gov/docs/iac/chapter/07-09-2025.481.465.pdf
State Rule | Accessed: 2026-09-07 -
Asbestos Permits – DIAL
https://dial.iowa.gov/licenses/building/asbestos/permits
Official Department Site | Accessed: 2026-09-07 -
Iowa Administrative Code Chapter 875-155 – Asbestos Licensing
https://www.legis.iowa.gov/docs/iac/chapter/05-08-2019.875.155.pdf
State Rule | Accessed: 2026-09-07 -
Iowa Code Section 88B.6 – Licensing of asbestos workers
https://law.justia.com/codes/iowa/title-iii/chapter-88b/section-88b-6/
State Statute | Accessed: 2026-09-07
Important Disclaimer
Information Currency: This guide reflects licensing information as available in 2026. Licensing requirements are subject to change without notice. Always verify current requirements with official sources.
Official Source: For current information, contact Multiple Authorities – See research notes:
- Website: https://dial.iowa.gov
- Phone: Contractor Registration: 515-242-5871; Electrical Examining Board: 515-725-6147; Plumbing & Mechanical Systems Board: 1-866-280-1521
No Legal Advice: This guide provides general information only. Consult with the licensing board or a qualified professional for guidance specific to your situation.
Local Processes: Professional licensure is statewide in Iowa. Local jurisdictions administer permits, inspections, and code enforcement—confirm project-specific requirements with the city or county where you will work.