Iowa · Concrete licensing · official-source guide
Iowa issues no concrete, masonry or general contractor license. The Department of Inspections, Appeals, and Licensing registers construction contractors under Iowa Code chapter 91C instead. Any concrete contractor earning at least $2,000 a year from construction must register before working, pay $50 a year, and show workers compensation compliance plus an Iowa unemployment insurance account number.
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Verify a licenseVerified against agency sources on 2026-10-26. Rules and fees change; confirm with the named authority before relying on this guide.
Iowa has no concrete license, no masonry license and no state general contractor license. What the state does run is a registration system. The Department of Inspections, Appeals, and Licensing, known as DIAL, registers construction contractors under Iowa Code chapter 91C and administers the program through 481 Iowa Administrative Code chapter 465. Those rules were moved to DIAL from the Labor Services Division, where they sat as chapter 150. Registration is not a competency license. Nobody at DIAL reviews your slab work, your reinforcing detail or your mix design. The statute exists for four stated reasons: unemployment insurance compliance, workers compensation compliance, collection of money owed to state agencies by out-of-state contractors, and making contractor information public. That last reason matters to anyone selling driveways and foundations, because it means your registration record is a public document a homeowner can pull up before they call you. Above the state layer sits a city layer that varies a lot. Davenport issues its own contractor licenses with an exam and a bond. Sioux City issues no general contractor license but demands a bond made out to the city. Cedar Rapids points contractors to state registration and then requires a separate bond for any work in the public right of way. Des Moines sells a flatwork permit through its Permit and Development Center. So the honest answer for a concrete company in Iowa is that one state registration gets you legal statewide, and then each city you bid in has its own paperwork before you can pull a permit.
Sourceslegis.iowa.gov 1legis.iowa.gov 2dial.iowa.gov 3davenportiowa.com 4sioux-city.org 5cedar-rapids.org 6dsm.city 7
Registration under chapter 91C is an annual filing, not a qualification. Iowa Code 91C.2 lists the conditions. You must be in compliance with Iowa workers compensation law and supply evidence of coverage every year, or proof of relief from the requirement under section 87.11, or a statement that you are not required to carry it. You must hold an employer account number or a special contractor number issued by the workforce development department under chapter 96. If your principal place of business is outside Iowa, you must file a surety bond of $25,000 or show that you are prequalified to bid Department of Transportation work under section 314.1. That is the whole test. Rule 481-465.3 says a contractor shall be registered before performing any construction work in the state, which means the certificate comes before the first pour, not after it. Rule 481-465.7 says DIAL issues the number within 30 days of receiving a completed application, and that the number is the letter C followed by six digits. A joint venture is treated as its own entity and registers on its own. Iowa Code 91C.5 directs the department to compile the names and public registration numbers of every registered contractor and to make that information reachable by government agencies and the general public. For a concrete business, the practical reading is simple. The C number is the thing a general contractor, a municipal purchasing office or a cautious homeowner will ask you for, and it is the thing that proves you filed, insured and reported. It proves nothing about craft.
Chapter 91C borrows its definition of construction from the unemployment law. Rule 481-465.2 adopts the examples in rule 871-23.82 by reference, and that rule spells out concrete and masonry work in detail. Paragraph 23.82(2)(l) covers concrete contractors, described as establishments primarily engaged in the use of concrete and asphalt to produce parking areas, building foundations, structures and retaining walls, and the use of all materials to produce patios, private driveways and private walks. The listed trades under it include concrete finishers, concrete work on private driveways, sidewalks and parking areas, poured concrete building foundations, curb construction, culvert construction, parking lot construction, concrete patio construction, grouting work, gunite work and sidewalk construction other than public sidewalks. Paragraph 23.82(2)(i) covers masonry, stone work, tile setting and plastering, and names bricklaying, cement block laying, concrete block laying, block, stone or brick foundations, chimney construction and maintenance, retaining wall construction in block, stone or brick, stone setting, stone work erection and tuck pointing. Public street and sidewalk concrete work appears separately under heavy and highway construction. Form work is in there too, as erection and dismantling of forms for poured concrete. Placing concrete reinforcement and setting precast or prestressed concrete products are listed under the structural steel and precast group. The rule counts new work, additions, alterations, maintenance and repairs in every one of these categories. So tearing out and replacing a cracked apron, cutting in a new garage slab, pouring footings for an addition and repointing a brick chimney are all construction for registration purposes. There is no exemption for repair-only work and none for flatwork alone.
DIAL states that Iowa law requires all individual and business construction contractors performing construction work to register with the department if they earn at least $2,000 a year from construction. Iowa Code 91C.1 writes the same line from the other direction: a person who earns less than two thousand dollars annually, or who performs work or has work performed on their own property, is not a contractor for purposes of the chapter. Rule 481-465.1 repeats that scope. The threshold is annual gross from construction, not per job, so a crew that pours two driveways a summer is over it. Subcontractors are not covered by the general contractor's registration. DIAL answers that question directly and says subcontractors must register in their own name, which is the normal position for a concrete or masonry sub working under a builder. If you run more than one construction business, each business with a separate federal identification number registers separately. If you first registered as a sole proprietor or a partnership and later incorporate, DIAL treats that as a new business and issues a new registration number rather than amending the old one. Rule 481-465.5 bars amendments where the business classification changes. Public bodies are not contractors under the chapter, so the state, its boards, agencies, school districts and other special purpose districts do not register. Nothing in the chapter exempts a concrete contractor because the work is small, because it is repair, because it is outdoors or because no permit is pulled. The only carve-outs are the dollar threshold, your own property, and public bodies.
Rule 481-465.4(9) sets the standard fee at $50 per year or $150 for a three-year registration. DIAL's application page describes the annual $50 fee as non-refundable and says credit card payments are not accepted over the phone. Iowa Code 91C.4 caps the fee the director may prescribe at fifty dollars per year and sends collected fees to the licensing and regulation fund created in section 10A.507. Contractors who come in through the Iowa Plumbing and Mechanical Systems Board pay a prorated fee matched to the length of the registration period, which is not the route a concrete business takes. The part worth knowing is the fee exemption. Iowa Code 91C.1(3) and DIAL's instructions both allow a self-employed contractor to register without paying if three conditions hold: the contractor does not work with or for other contractors in the same phase of construction, does not pay more than $2,000 per year to employ other people in the business, and is not an LLC, a corporation or a partnership. The exemption is claimed on a signed and notarized fee exemption form submitted in place of payment. Rule 481-465.2 defines same phase of construction by trade and names concrete work and masonry, stonework, tile setting and plastering as examples, so a solo flatwork contractor who subs to builders pouring the same scope is working in the same phase and does not qualify. Rule 481-465.6 ties the applicable fee to the postmark or the receipt date. There is no fee for a permissible amendment to an application.
This is where Iowa differs sharply from states that run a contractor board. Nothing in Iowa Code chapter 91C or in 481 Iowa Administrative Code chapter 465 requires a concrete or masonry contractor to pass an examination, document trade experience, hold a qualifying individual, show a credit score, carry a minimum net worth or complete continuing education. Rule 481-465.4 lists what the application must contain, and the list is administrative: name, complete mailing address of the principal place of business, business telephone number, type of business entity, the name and address and telephone number and position of each corporate officer or of each owner, workers compensation coverage information, the unemployment insurance employer account number, a North American Industry Classification System code or a description of principal products and services, the fee or the exemption form, a social security number if the contractor is a natural person, and the out-of-state bond where it applies. No trade testing appears anywhere. There is no renewal education requirement either, because renewal is the same filing again. If you are coming to Iowa from a state where you sat a business and law exam and logged verified years under a licensed contractor, expect none of that here at state level. The competency screen in Iowa sits with cities that choose to run one and with the general contractors and owners who hire you. That is a real commercial point for a concrete company. Because the state sets no skill bar, your own proof, references, mix and finish specifications, and photographs of past slabs and foundations carry the weight the state does not.
Two state obligations sit underneath registration, and both are checked before a number is issued. Iowa Code 87.1 requires every employer subject to the workers compensation chapters to insure that liability with a carrier approved by the commissioner of insurance, and to show evidence of compliance on demand of the workers compensation commissioner. An employer who refuses or neglects to comply is liable in case of injury under the common law as modified by statute, which strips away the exclusive remedy that normally caps a claim. Iowa Code 91C.2 folds this into registration by requiring annual evidence of coverage and by requiring the insurer to notify the director when a policy is cancelled. Rule 481-465.4(6) accepts one of three things: a certificate of insurance from the insurer showing the coverage dates and listing DIAL as a certificate holder, an employer's release from the insurance requirement under Iowa Code section 87.11, or a statement that the contractor is not required to carry coverage. Rule 481-465.8 requires self-insured contractors to notify DIAL ten days before any cessation of self insurance, and rule 481-465.5 requires notice of coverage changes ten days ahead. The second obligation is the account number. Iowa Code 91C.2 requires an employer account number or a special contractor number from the workforce development department under chapter 96, and rule 481-465.4(7) says the number must be obtained before applying. DIAL states that all in-state and all out-of-state contractors must obtain an Iowa unemployment insurance number in order to register, even with no employees. DIAL also states that a contractor with employees must carry a certificate of workers compensation.
Sourceslegis.iowa.gov 1legis.iowa.gov 2legis.iowa.gov 3dial.iowa.gov 4
If your concrete business is based in another state and you want to pour in Iowa, the bond is the step that catches people. Iowa Code 91C.2(3) says an out-of-state contractor shall either file a surety bond under section 91C.7 in the amount of twenty-five thousand dollars or provide a statement that the contractor is prequalified to bid on Department of Transportation projects under section 314.1. Rule 481-465.4(11) repeats the $25,000 figure and requires the bond to be prepared on the form DIAL provides, or a copy of the Department of Transportation prequalification letter. DIAL adds that having a branch office in Iowa does not exempt you, and that a contractor with a branch office in Iowa does not count as in-state if the business is primarily based outside Iowa. Rule 481-465.2 defines principal place of business by seven factors, including where payroll is prepared, where officers and owners reside and work, where bank accounts and fixed business property sit, and where management decisions are made. Out-of-state subcontractors get no shelter under the general contractor's registration or bond. DIAL says subcontractors must register and hold their own bond. The bond exists to guarantee taxes, penalties and other payments owed to the state as a result of your work, and only the state and its agencies may collect on it. Iowa Code 91C.7 makes the bond continuous until the surety cancels with at least thirty days written notice, lets the department increase the amount after a hearing, and lets the director attach the bond to collect fees and penalties. Rule 481-465.13 sets the release process.
Registration is annual unless you buy the three-year term. DIAL answers the renewal question plainly: your registration must be renewed every year, and the month before it expires a renewal form is sent by mail or email. You renew on the same new application and renewal form, marked as a renewal, with your current registration number written where indicated. DIAL also confirms that if you renew on time you keep the same registration number, which matters if your number is printed on estimates, contracts and door hangers. Rule 481-465.6(2) ties the renewal fee to the expiration date for a timely filing, and to the postmark or receipt date for anything filed after expiration. Changes must be reported, and the clock is short. Rule 481-465.5(1) gives you 15 working days to report any change in the information you originally submitted, except for workers compensation coverage, where notice is due ten days before the change. Iowa Code 91C.3 says any change in the information provided shall be reported promptly to the director. DIAL warns that failure to notify it in writing may result in penalties. Rule 481-465.2 defines working days as Monday through Friday, excluding federal and state holidays, and excludes the day of receipt when counting. Some changes cannot be handled as amendments at all. Rule 481-465.5(3) bars an amendment where the business classification changes, and DIAL says a sole proprietor or partnership that incorporates must reapply as a new business and receives a new registration number. Plan for that if you are about to form an LLC mid-season.
Iowa Code 91C.8 gives the DIAL director and the department's inspectors jurisdiction to investigate and enforce. A citation issues for three things: failing to be registered, filing registration information that is not substantially complete and accurate, and an out-of-state contractor failing to file the bond. Citations must be in writing and describe the violation with particularity. The penalty ladder is set by statute and repeated in rule 481-465.10(2): administrative penalties of not more than $500 for a first violation and not more than $5,000 for each violation on a second or subsequent violation. The rule says that in proposing a penalty, DIAL weighs knowledge of the alleged violation, knowledge of the requirements of the law, and the nature and extent of the violation. You get 15 working days from notice to file a notice of contest, which goes to the director and then to the employment appeal board. If you do nothing in that window, the citation and the proposed assessment become a final order of the employment appeal board and are not subject to review by any court or agency. Iowa Code 91C.7(1) adds a commercial penalty that bites harder than the fine: a contractor who is not registered shall not be awarded a contract to perform work for the state or an agency of the state. Revocation is separate. Rule 481-465.11 says DIAL seeks revocation when a contractor no longer meets the conditions of registration, serves a notice of intent to revoke, holds a fact-finding interview, and makes revocation effective 21 days after certified mailing of the decision. A revoked contractor must return the original certificate and may reapply once eligible.
Des Moines does not add a concrete contractor license on top of state registration. The city licenses issued by the City Clerk's Office cover food and merchandise businesses, alcohol, tobacco, transient merchants and similar trades, and a concrete contractor is not on that list. What Des Moines does control is the permit. The city's Permit and Development Center states that a permit is required for a property owner or the contractor they hire to replace or repair a sidewalk, and that the permit costs $40.00 and is available at the Permit and Development Center in City Hall at 1200 Locust Street. The same page handles sidewalk and driveway permit questions through the Permit and Development Center. The sidewalk division of that office inspects sidewalks for safe conditions and issues notices to reconstruct. The city notes that under state law a property owner abutting a public sidewalk must maintain it safely, and that an owner notified of a defective sidewalk has 180 days to make repairs. That 180-day notice is the single most useful fact in Des Moines for a flatwork company, because it creates a dated, documented demand sitting in a homeowner's hands with a deadline on it. Income-eligible owners may apply for subsidy assistance, and if they are approved within 30 days of the notice the city arranges the replacement itself. For a concrete contractor that means two separate buyers on the same street: the owner who must hire someone inside 180 days, and the city program that arranges work for owners who qualify for help.
Sourcesdsm.city 1dsm.city 2
Cedar Rapids states the state-first rule in writing. Its Building Services page on licensing for contractors says that in order for contractors to perform work and be issued a permit in the city of Cedar Rapids, licensing with the state of Iowa is required, and it links building, electrical and mechanical or plumbing contractors to the state. There is no separate Cedar Rapids concrete license. The second layer is the right of way, and for a driveway and sidewalk company that is where most of the work sits. The city's public improvement permit page says homeowners, contractors and utility agencies must complete a permit application and receive approval before beginning any work in the public right of way, and lists direct access driveway construction as its own application. It then states that if a contractor is being hired to do the work, the contractor must first be specifically bonded to perform work in the right of way, that the bond is available through the Public Works Department, and that approval may take up to ten business days. Plan bids around that lead time. The city's contractor questions page confirms that contractors need to register with the city and hold a current bond to work in the Cedar Rapids right of way, that bonds are submitted online through the city's portal, and that original bonds are accepted by mail at the City Services Center on 15th Avenue SW. It also puts a number on skipping the permit: beginning work in the right of way without an approved permit results in a $50.00 penalty per violation. Separately, the city doubles the permit fee where work starts before a required permit is obtained.
Sourcescedar-rapids.org 1cedar-rapids.org 2cedar-rapids.org 3cedar-rapids.org 4
Davenport runs a real city licensing program. Its contractor licenses page says work regulated by city ordinance must be performed by or under the direct supervision of an individual licensed as a contractor, and that no person, firm, partnership or corporation shall engage in construction contracting without a current valid license certificate issued under City Code 15.30. Licenses are issued to individuals only, who may then secure permits and supervise work for a company. Applicants must meet minimum training and experience qualifications for the category sought and must demonstrate capability by standardized testing, with approved exam sites at the International Code Council and Prometric. All general building license candidates must score at least 70% before a license is issued. The posted fees are $300 commercial, $200 residential and $100 sub-specialty, and applicants must supply a copy of the passing exam score and a copy of their state of Iowa license. Davenport also requires a bond from all contractors. Licensed general contractors furnish a bond of $25,000, while electrical, mechanical, plumbing and sign contractors furnish $5,000, on the city's own bond form with power of attorney attached and the surety's seal on the original mailed to Public Works. Sioux City takes the opposite approach. Its Inspection Services answers say the city does not issue general contractor licenses, but that contractors must be registered with the state of Iowa and must submit a $10,000 general building contractor's bond made out to the city of Sioux City before obtaining building permits, and that the bond must be an original rather than a scan or copy. The city also verifies for callers whether a contractor is bonded and licensed.
Sourcesdavenportiowa.com 1davenportiowa.com 2sioux-city.org 3
Iowa Code chapter 91C and 481 Iowa Administrative Code chapter 465 contain no requirement that a registered contractor print a registration number on advertising, vehicles, websites or written estimates, and they set no penalty for leaving it off. What they do create is a public identifier. Rule 481-465.7 says the registration number is the letter C followed by six unique digits, and Iowa Code 91C.5 makes the names and public registration numbers of all registered contractors public records that the director must make accessible to agencies and the general public. Using that number in your marketing is voluntary in Iowa and it is still the cheapest proof you can publish, because a prospect can check it in seconds. The wording risk is the opposite one. Because Iowa issues no concrete, masonry or general contractor license, describing yourself as a licensed concrete contractor, a licensed general contractor or state licensed in Iowa advertises a credential the state does not grant. Iowa Code 714.16(2)(a) makes it an unlawful practice to use deception, false pretense, misrepresentation or the omission of a material fact in connection with the advertisement of merchandise, whether or not anyone was in fact misled or damaged, and it states that representing performance characteristics or benefits for which no reasonable basis existed is deceptive advertising, with the burden on the advertiser to show a reasonable basis. Iowa Code 714.16(7) lets the attorney general ask the court for a civil penalty of up to forty thousand dollars per violation. Registered, bonded and insured are accurate and defensible. Licensed, for concrete work in Iowa, is not.
Verification runs through the state. Iowa Code 91C.5 requires the director to compile the names and public registration numbers of all registered contractors, declares those records and the complete registration information public, and directs the director to take the steps necessary to make the information reachable by government agencies and the general public. DIAL puts that into practice with a check a contractor license link from its contractor registration page into the Iowa Workforce labor portal, which is also where new registrations and renewals are filed. That is the lookup to send a customer to, and it is the lookup a general contractor's compliance clerk will use on you. Because the registration record is tied to workers compensation and unemployment insurance compliance, a current record tells a buyer more than a competency license would in many states. Iowa Code 91C.5(2) requires the director to revoke a registration number when a contractor fails to maintain compliance with the conditions of registration, after a fact-finding interview. A lapsed workers compensation certificate can therefore pull your public record down. City verification is a separate call. Sioux City says it will confirm by telephone through Building Services whether a specific company is authorized to perform construction work in the city and whether it is bonded. Cedar Rapids keeps a list of contractors bonded for right-of-way work through the Public Works Engineering Division. Davenport issues its licenses to named individuals, so a customer checking a Davenport license is checking a person rather than a company. Expect buyers to check all of these before a large foundation job.
Sourceslegis.iowa.gov 1dial.iowa.gov 2laborportal.iwd.iowa.gov 3sioux-city.org 4cedar-rapids.org 5davenportiowa.com 6
Two money rules shape concrete work in Iowa more than registration does. The first is the mechanics notice and lien registry. Iowa Code 572.34 creates a statewide registry administered online and accessible to the public, indexed by owner name, general contractor name, registry number, property address, legal description and tax parcel number. Iowa Code 572.13A requires the general contractor or owner-builder to post a notice of commencement of work no later than ten days after work begins, and a notice of commencement must be posted before any subcontractor preliminary notice can go up. Iowa Code 572.13B requires a subcontractor on residential construction to post a preliminary notice, and a lien is enforceable only to the extent of the balance due the general contractor at the time that notice was posted. If nobody posted the commencement notice within ten days, a subcontractor may post it along with its own preliminary notice. Iowa Code 572.9 gives a general contractor or subcontractor two years and ninety days from the last labor or material to post a statement of account, and Iowa Code 572.27 requires any action to enforce a lien within two years from the expiration of ninety days after that date. Iowa Code 572.34 caps the posting fee for a mechanic's lien at forty dollars, and 572.34(11) says registration under chapter 91C is not required in order to post a notice or a lien. The second rule is tax. The Department of Revenue states that when a contractor performs new construction, reconstruction, alteration, expansion or remodeling, the contractor pays sales or use tax on building materials and supplies at purchase, collects no tax from the customer, and charges no sales tax on labor. For work that does not rise to that level, such as a repair, the contractor charges the customer tax on the materials used. Price your bids accordingly. Before you dig footings, Iowa Code 480.4 requires notice to the notification center before any excavation, with a forty-eight-hour period and a notice valid for twenty-five calendar days, and Iowa Code 480.6 sets civil penalties up to one thousand dollars per day for damage to facilities other than gas and hazardous liquid pipelines, to a maximum of twenty thousand dollars.
These are common details other guides publish about Iowa, but we could not verify them from the agency source. Confirm them directly before relying on them.
No. Iowa has no concrete license, no masonry license and no state general contractor license. The Department of Inspections, Appeals, and Licensing registers construction contractors under Iowa Code chapter 91C instead. Registration checks workers compensation and unemployment insurance compliance and makes your record public. It does not test or certify your trade skill at all.
Yes, if you clear the threshold. DIAL requires registration from any individual or business performing construction work who earns at least $2,000 a year from construction. Iowa Code 91C.1 exempts a person earning less than two thousand dollars annually, and anyone working only on their own property. Two driveways usually puts you over that line.
The standard fee under rule 481-465.4 is $50 per year or $150 for a three-year registration. A self-employed contractor may file a notarized fee exemption form instead of paying, but only if the business is not an LLC, corporation or partnership, pays no more than $2,000 a year to employ others, and does not work in the same phase of construction as other contractors.
No. Nothing in Iowa Code chapter 91C or 481 Iowa Administrative Code chapter 465 requires an exam, documented trade years, a qualifying individual or continuing education. The application asks for your business details, a workers compensation document, an unemployment insurance account number, a business classification code and the fee. Davenport, however, does require a passing exam score for its own city license.
Rule 481-465.7 says DIAL issues the number within 30 days of receiving a completed application, and that the number is the letter C followed by six unique digits. The number comes before work, since rule 481-465.3 requires registration before performing any construction in the state. On-time renewal keeps the same number, so printed materials stay accurate.
You must file a $25,000 surety bond on the DIAL bond form, or show Department of Transportation prequalification under Iowa Code section 314.1. Iowa Code 91C.2 and rule 481-465.4 both set that amount. DIAL states that a branch office in Iowa does not exempt you if the business is primarily based elsewhere, and out-of-state subcontractors need their own registration and bond.
Iowa Code 91C.8 lets DIAL cite you. Administrative penalties run to not more than $500 for a first violation and not more than $5,000 per violation for a second or later one. You have 15 working days to contest before the citation becomes a final order. An unregistered contractor also cannot be awarded a contract for state work under Iowa Code 91C.7.
Yes. The Des Moines Permit and Development Center states that a permit is required for an owner or the contractor they hire to replace or repair a sidewalk, and that the permit costs $40.00. The city also notes that an owner notified of a defective sidewalk has 180 days to make the repairs under state law.
Because the apron sits in the public right of way. Cedar Rapids requires a contractor hired for right-of-way work to be specifically bonded through the Public Works Department first, and says approval may take up to ten business days. Starting right-of-way work without an approved permit draws a $50.00 penalty per violation, and the permit fee is doubled.
Yes. Davenport issues its own contractor licenses to individuals under City Code 15.30, requires a passing score of at least 70% on a standardized exam, and charges $300 commercial, $200 residential or $100 sub-specialty. It also requires a $25,000 surety bond from licensed general contractors. Sioux City issues no license but requires a $10,000 bond made out to the city.
No, and that wording is risky. Iowa grants no concrete, masonry or general contractor license, so claiming one advertises a credential that does not exist. Iowa Code 714.16 makes misrepresentation in advertising an unlawful practice and allows a civil penalty of up to forty thousand dollars per violation. Say registered, bonded and insured instead.
Through the state. Iowa Code 91C.5 makes contractor names and public registration numbers public records that DIAL must keep accessible, and DIAL links a contractor license check from its contractor registration page into the Iowa Workforce labor portal. Sioux City will also confirm by phone whether a company is bonded and authorized to work in that city.
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