STATE LICENSE
ConditionalIowa Department of Inspections, Appeals, …
871 IAC 23.82(2)(l) lists concrete contractors — foundations, driveways, sidewalks, patios, parking areas, and retaining walls — as construction, so Iowa Code chapter 91C requires DIAL registration once construction earnings reach $2,000 a year. Registration requires workers' compensation evidence, an Iowa Workforce Development unemployment insurance number, and a $25,000 bond for out-of-state contractors. There is no state concrete license or exam.
Public-street and sidewalk work, flatwork permits, and right-of-way rules are set locally. On residential jobs where you contract directly with the owner as the general contractor, Iowa's mechanics' lien law requires a notice of commencement on the state registry within 10 days.
The state sets the license floor; the county or city permit office controls filing, inspections, and local rules wherever the job site sits.
Registration is statewide; permits, right-of-way approvals, and inspections are local. No statewide preemption of local contractor licensing outside plumbing and mechanical trades was found.
The local offices section below names the exact permit desk for every Iowa county on file.
Each row names the issuing authority, cost, timeline, citation, and status behind the requirement — verified against the official source.
Published fees from the issuing authorities, as of October 2026. Local permit fees vary by project and jurisdiction — the basis is stated where a flat number does not exist.
Iowa's only state credential for concrete work is the chapter 91C registration — a compliance check, not a competency test.
A self-employed finisher who pays no more than $2,000 a year to others and doesn't work with or for other contractors in the same phase of construction pays no registration fee (§ 91C.1(3)).
Driveway approaches and public sidewalks are permitted by the city or county; requirements vary.
A practical sequence for a new concrete contractor in Iowa. Actual agency processing times are noted in the ledger above.
Each item names the issuing authority, cycle, and citation.
Statutory consequences with their citations — not estimates, not “commonly cited” guesses.
DIAL issues a written citation for failing to register, for substantially incomplete or inaccurate registration information, or for an out-of-state contractor's missing bond.
A contractor not registered as required may not be awarded a contract to perform work for the state or a state agency.
On residential construction, a general contractor who fails to post the notice of commencement of work to the Mechanics' Notice and Lien Registry is not entitled to a mechanic's lien.
Inside city limits, the city office listed here issues the permit; the county office serves unincorporated areas. Every office links to its official page.
Every fact in this file was checked against these official sources on October 2026.
Pending verification: DIAL's Contractor Registration page says contractors with employees must carry workers' compensation 'and a $25,000 bond'; Iowa Code § 91C.2(3) and 481 IAC 465.4(11) require the $25,000 bond only of out-of-state contractors — we follow the statute · DIAL's Contractor Registration page describes registration as a one-year credential renewed annually, while 481 IAC 465.4(9) also prices a $150 three-year registration; which terms DIAL currently issues outside the PMSB combined application was not confirmed · Whether individual Iowa cities (e.g. Des Moines, Cedar Rapids) require their own general or trade contractor license or registration before issuing building permits for this trade — no statewide preemption of local general-contractor licensing was found
General information, not legal advice. Always confirm requirements, deadlines, and forms with the issuing authority before filing or contracting.
Store licenses, permits, policies, and renewal dates in one place.