> ## Documentation Index
> Fetch the complete documentation index at: https://docs.cslid.nascla.memorang.app/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Illinois

> Contractor licensing thresholds, regulator routing, requirements, reciprocity, and license types for Illinois's light-touch construction regulation model.

Illinois does not require a general contractor license at the state level. State regulation is limited to three lanes: highway prequalification, state-funded building prequalification, and roofing contractor licensing. Municipal requirements — especially in Chicago — operate independently.

<Warning>
  Always verify statutes, fees, and application details with the live regulator before making bidding, licensing, or legal decisions.
</Warning>

## At a glance

The fastest way to orient yourself in Illinois is to recognize that most construction is unregulated at the state level. These signals cover the three lanes that are regulated.

| Signal                               | Value                             |
| ------------------------------------ | --------------------------------- |
| General contractor license           | Not required at state level       |
| Roofing bond (limited / residential) | **\$10,000** surety bond          |
| Roofing bond (unlimited)             | **\$25,000** surety bond          |
| Roofing application fee              | **\$125**                         |
| Out-of-state contractor bond trigger | Contracts over **\$5,000**        |
| Public works performance bond        | Contracts of **\$25,000** or more |
| Highway prequalification             | Financial-statement-based, no fee |
| Reciprocity model                    | No statewide reciprocity          |

## Frequently asked questions

Pick the tab that matches your situation. Each FAQ gives a direct answer and points you to the full detail below.

<Tabs>
  <Tab title="Contractors" icon="hard-hat">
    <AccordionGroup>
      <Accordion title="Does Illinois require a state contractor license for general construction?">
        No. Illinois does not require a general contractor license at the state level. Most construction is unregulated by the state. Only three lanes are regulated: highway prequalification, state-funded building prequalification, and roofing contractor licensing. Check your local municipality — especially Chicago — for additional requirements. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="What is the Illinois roofing certification requirement, and how do I get certified?">
        The Department of Financial and Professional Regulation (DFPR) issues two roofing licenses: a Limited license (residential only, **\$10,000** surety bond) and an Unlimited license (residential + commercial, **\$25,000** surety bond). The application fee is **\$125** with a **\$62.50** annual renewal. You must also carry **\$250,000** property damage and **\$500,000** personal injury liability insurance. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="What does it take to prequalify for highway construction contracts in Illinois?">
        IDOT prequalification is financial-statement-based with no fee. Unaudited financials cap your bid capacity at **\$750,000**. Reviewed or compiled financials cap at **\$1,500,000**. CPA-audited financials remove the cap entirely. Prequalification is valid for 16 months from the financial statement date. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="Where do I go to get licensed or prequalified in Illinois?">
        Illinois has 3 separate agencies: IDOT for highway prequalification, the Capital Development Board for state-funded building projects, and DFPR for roofing. There is no central licensing office for general construction. See [Who regulates construction](#who-regulates-construction).
      </Accordion>

      <Accordion title="What are the bonding and insurance requirements for roofing contractors?">
        Limited (residential) roofers need a **\$10,000** surety bond. Unlimited (residential + commercial) roofers need a **\$25,000** surety bond. Both must carry **\$250,000** property damage and **\$500,000** personal injury liability insurance per occurrence. Workers' compensation and unemployment insurance are required if the applicant has employees. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="Can I use my out-of-state license in Illinois?">
        Illinois does not maintain statewide reciprocal agreements for any regulated construction trade. If you hold an out-of-state credential, contact the relevant agency directly to ask about any recognition pathways. See [Reciprocal agreements](#reciprocal-agreements).
      </Accordion>

      <Accordion title="Do out-of-state contractors need to register before working in Illinois?">
        Yes. Out-of-state contractors must post a bond with the Department of Employment Security for contracts over **\$5,000**, regardless of work type. This is separate from any roofing or prequalification requirements. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="Does Illinois require a license for roofing work?">
        Yes. Both residential and commercial roofing require a DFPR license. A limited license covers residential only (**\$10,000** bond); an unlimited license covers both residential and commercial (**\$25,000** bond). See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="Does Illinois require licensing for residential construction?">
        Not at the state level for general residential construction. The exception is roofing, which requires a DFPR limited license. Chicago and other municipalities may have their own residential contractor licensing requirements. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="What if my project is a state-funded building rather than a highway?">
        State-funded building projects require separate prequalification through the Capital Development Board. This is a distinct process from IDOT highway prequalification — the two are not interchangeable. See [Who regulates construction](#who-regulates-construction).
      </Accordion>

      <Accordion title="Are public works bonds required in Illinois?">
        Yes. Public works contracts in cities with populations of 500,000 or more require a performance bond for contracts over **\$10,000**. All public works contracts estimated at **\$25,000** or more require payment and performance bonds. See [Construction work regulated](#construction-work-regulated).
      </Accordion>
    </AccordionGroup>
  </Tab>

  <Tab title="Regulators" icon="shield-check">
    <AccordionGroup>
      <Accordion title="How does Illinois's licensing model compare to states with a general contractor board?">
        Illinois is one of the lightest-touch states in the country. It has no general contractor license, no statewide contractor board, and regulates only three construction lanes at the state level: highway prequalification (IDOT), state-funded building prequalification (CDB), and roofing (DFPR). Most general construction is entirely unregulated by the state. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="How do Illinois's roofing bond thresholds compare to other states?">
        Illinois requires a **\$10,000** bond for limited (residential) roofers and a **\$25,000** bond for unlimited (residential + commercial) roofers. The application fee is **\$125** and the annual renewal is **\$62.50**. Compared to states with comprehensive contractor licensing, these are relatively modest requirements. See [Licensing thresholds](/docs/compare/licensing-thresholds).
      </Accordion>

      <Accordion title="What types of construction work are regulated at the state vs. local level in Illinois?">
        The state regulates only highway prequalification, state-funded building prequalification, and roofing licensing. Everything else — including general commercial construction, residential work, plumbing, electrical, and HVAC — is left to municipalities. Chicago in particular maintains its own independent licensing program. See [Construction work regulated](#construction-work-regulated).
      </Accordion>

      <Accordion title="What agencies oversee construction in Illinois?">
        Three agencies: IDOT for highway prequalification, the Capital Development Board for state-funded buildings, and DFPR for roofing contractor licensing. There is no unified contractor board or central regulatory authority. See [Who regulates construction](#who-regulates-construction).
      </Accordion>

      <Accordion title="What are the fees across Illinois's regulated lanes?">
        IDOT highway prequalification has no fees. Roofing costs **\$125** to apply and **\$62.50** per year to renew. Out-of-state contractors face a bond obligation for contracts over **\$5,000** through the Department of Employment Security. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="What license classifications does Illinois use?">
        Illinois offers only two roofing license types (Limited and Unlimited) and two prequalification types (IDOT Highway and Capital Development Board Building). There is no broader classification system because no general contractor license exists. See [Types of licenses](#types-of-licenses).
      </Accordion>

      <Accordion title="Does Illinois have any reciprocity agreements?">
        No. Illinois does not maintain statewide reciprocal agreements for any regulated construction trade. Each agency operates independently, and no board-level reciprocity is documented. See [Reciprocal agreements](#reciprocal-agreements).
      </Accordion>

      <Accordion title="What exam requirements exist in Illinois?">
        Illinois does not require a trade exam for highway or building prequalification — those are financial-statement-based. Roofing licensing does not have an exam requirement either; it is based on bonding, insurance, and fee payment. The ICBO General Contractor and Block's Kansas UBC exams are recognized by some local jurisdictions but are not state requirements.
      </Accordion>

      <Accordion title="How does IDOT prequalification work compared to other states?">
        IDOT uses a financial-statement-based system with no fee. Bid capacity is capped at **\$750,000** for unaudited statements and **\$1,500,000** for reviewed or compiled statements. CPA-audited financials remove the cap. Prequalification is valid for 16 months. See [Requirements](#requirements).
      </Accordion>

      <Accordion title="How does Illinois compare to other Midwest states in regulatory complexity?">
        Illinois is among the lightest-touch states in the Midwest. Many neighboring states (Iowa, Michigan, Minnesota, Ohio) regulate multiple trades at the state level. Illinois's absence of a general contractor license and narrow three-lane model makes it an outlier in the region. See the [Midwest region guide](/docs/jurisdictions/regions/midwest).
      </Accordion>
    </AccordionGroup>
  </Tab>
</Tabs>

## Start with your goal

Pick the card that matches what you need right now. Each one links to the relevant section on this page.

<CardGroup cols={2}>
  <Card title="Is licensure triggered?" icon="search" href="#construction-work-regulated">
    Most construction is not state-regulated in Illinois. Check whether your project falls into a regulated lane.
  </Card>

  <Card title="Find the right regulator" icon="building" href="#who-regulates-construction">
    Use the regulator directory to route your question to IDOT, CDB, or DFPR.
  </Card>

  <Card title="Application and renewal details" icon="clipboard-list" href="#requirements">
    Financial statements for prequalification, bonds and insurance for roofing, and fee schedules.
  </Card>

  <Card title="Reciprocity direction" icon="arrow-left-right" href="#reciprocal-agreements">
    Illinois does not maintain statewide reciprocity. Confirm any recognition directly.
  </Card>
</CardGroup>

## Special considerations

Different roles need different things from an Illinois page. Use the tab that matches your situation to see what matters most before you read the full detail below.

<Tabs>
  <Tab title="Contractors" icon="hard-hat">
    <Tip>
      Start by asking whether your work lane is even regulated at the state level. In Illinois, most general construction is not.
    </Tip>

    * Illinois has no general contractor license at the state level.
    * Roofing requires a DFPR license before starting work — limited (residential) or unlimited (residential + commercial).
    * Highway work requires IDOT prequalification with financial statements.
    * State-funded building projects require separate Capital Development Board prequalification.
    * Out-of-state contractors must post a bond with the Department of Employment Security for contracts over **\$5,000**.
    * Chicago and other municipalities may impose their own licensing requirements.
  </Tab>

  <Tab title="Regulators" icon="shield-check">
    <Info>
      Illinois is best understood as a light-touch state that regulates only three construction lanes at the state level.
    </Info>

    * The state operates 3 separate regulatory agencies for different construction lanes.
    * No statewide reciprocity exists for any regulated trade.
    * Municipal licensing — particularly Chicago — operates independently of state requirements.
    * For cross-state comparison, the absence of a general contractor license is itself a key structural data point.
  </Tab>
</Tabs>

## Readiness checklist

Four things you need to confirm before you can treat Illinois as "ready" for a bid or an application. If any of these are unclear, you are not ready yet.

<Steps>
  <Step title="Classify the project lane" icon="tag">
    Determine whether the work is highway construction, a state-funded building project, roofing, or general construction. Only the first three are regulated at the state level.
  </Step>

  <Step title="Apply the right threshold test" icon="receipt">
    Roofing bonds are `$10,000` (limited) or `$25,000` (unlimited). Out-of-state contractors trigger a bond at `$5,000`. Highway prequalification has no fee but caps financial statements at `$750,000` (unaudited) or `$1,500,000` (reviewed/compiled).
  </Step>

  <Step title="Route to the correct regulator" icon="building">
    IDOT handles highway prequalification, CDB handles state-funded buildings, and DFPR handles roofing. General construction has no state regulator — check local rules.
  </Step>

  <Step title="Confirm the requirement set" icon="clipboard-check">
    For highway and state buildings, confirm financial statement requirements. For roofing, confirm bond amount, insurance, application fee, and renewal cycle. For out-of-state work, confirm the employment security bond.
  </Step>
</Steps>

<Check>
  If you can identify lane, threshold, regulator, and requirement set, you have the minimum package needed for an Illinois readiness check.
</Check>

## Navigation

Use these links to jump to related cross-state comparisons and workflows.

* [New state evaluation](/docs/workflows/new-state-evaluation) if you are screening Illinois for the first time.
* [Multi-state bid readiness](/docs/workflows/multi-state-bid-readiness) if you need to compare Illinois with nearby jurisdictions.
* [Licensing thresholds](/docs/compare/licensing-thresholds) or [prequalification patterns](/docs/compare/prequalification) for cross-state context.

## Construction work regulated

Illinois is unusual: most construction does not require a state license. The state regulates only three lanes, plus an out-of-state contractor bond obligation and public works bonding rules.

| Work lane                          | What triggers regulation                                    |
| ---------------------------------- | ----------------------------------------------------------- |
| Highway construction               | IDOT prequalification required (financial-statement-based)  |
| State-funded building construction | Capital Development Board prequalification required         |
| Roofing (residential only)         | DFPR limited license, **\$10,000** surety bond              |
| Roofing (residential + commercial) | DFPR unlimited license, **\$25,000** surety bond            |
| Out-of-state contractors           | Bond required for contracts over **\$5,000**                |
| Public works (cities 500K+)        | Performance bond for contracts over **\$10,000**            |
| Public works (all)                 | Payment/performance bond for contracts **\$25,000** or more |
| General construction               | Not regulated at state level                                |

<Note>
  Chicago and other municipalities may impose their own contractor licensing requirements independently of state rules. Always check local ordinances.
</Note>

## Common determination scenarios

If you are trying to figure out where to start, expand the scenario that is closest to your situation.

<AccordionGroup>
  <Accordion title="Commercial building project" icon="building">
    No state license is needed for general construction in Illinois. Check the municipality where work will be performed — particularly Chicago, which maintains its own licensing program.
  </Accordion>

  <Accordion title="Roofing project" icon="house">
    Determine whether the work is residential-only (limited license, **\$10,000** bond) or includes commercial properties (unlimited license, **\$25,000** bond). Apply through the Department of Financial and Professional Regulation.
  </Accordion>

  <Accordion title="Highway or DOT project" icon="road">
    Prequalify with IDOT by submitting financial statements. Unaudited financials cap bid capacity at **\$750,000**; reviewed or compiled financials cap at **\$1,500,000**. Prequalification is valid for 16 months. No fees.
  </Accordion>

  <Accordion title="State-funded building project" icon="building">
    Prequalify separately with the Capital Development Board. This is a distinct process from IDOT highway prequalification.
  </Accordion>

  <Accordion title="Out-of-state contractor entering Illinois" icon="arrow-left-right">
    Post a bond with the Department of Employment Security before starting any contract over **\$5,000**. This applies regardless of work type.
  </Accordion>
</AccordionGroup>

## Who regulates construction

Illinois splits its limited construction regulation across 3 agencies. Each handles a distinct lane. Use this directory to find the one that applies to your work.

<AccordionGroup>
  <Accordion title="Highway prequalification — Illinois Department of Transportation" icon="road">
    2300 South Dirksen Parkway, Room 322, Springfield, IL 62764

    **Phone:** (217) 782-3413 | **Fax:** (217) 524-4922

    **Website:** [idot.illinois.gov](http://www.idot.illinois.gov/)
  </Accordion>

  <Accordion title="State-funded building prequalification — Capital Development Board" icon="building">
    401 South Spring Street, 3rd Floor, Springfield, IL 62706

    **Phone:** (217) 782-2864

    **Email:** [CDB.VendorReg@illinois.gov](mailto:CDB.VendorReg@illinois.gov)

    **Website:** [cdb.illinois.gov](https://cdb.illinois.gov/)
  </Accordion>

  <Accordion title="Roofing contractor licensing — Department of Financial and Professional Regulation" icon="house">
    320 West Washington Street, 3rd Floor, Springfield, IL 62786

    **Phone:** (888) 473-4858

    **Website:** [idfpr.illinois.gov](http://www.idfpr.illinois.gov/)
  </Accordion>
</AccordionGroup>

## Requirements

Each regulated lane in Illinois has its own inputs and thresholds. Expand the category that applies to your situation.

<AccordionGroup>
  <Accordion title="Highway Prequalification" icon="road" defaultOpen={true}>
    | Requirement                       | Detail                                  |
    | --------------------------------- | --------------------------------------- |
    | Financial statements              | Required with application               |
    | Unaudited financial cap           | **\$750,000** annual bid limit          |
    | Reviewed / compiled financial cap | **\$1,500,000** annual bid limit        |
    | CPA-audited financials            | Not required, but remove the cap        |
    | Prequalification validity         | 16 months from financial statement date |
    | Fees                              | None                                    |
  </Accordion>

  <Accordion title="Roofing Contractors" icon="house">
    | Requirement                           | Detail                                                         |
    | ------------------------------------- | -------------------------------------------------------------- |
    | License types                         | Limited (Residential) and Unlimited (Residential + Commercial) |
    | Surety bond (limited)                 | **\$10,000**                                                   |
    | Surety bond (unlimited)               | **\$25,000**                                                   |
    | Liability insurance (property damage) | **\$250,000** per occurrence                                   |
    | Liability insurance (personal injury) | **\$500,000** per occurrence                                   |
    | Workers' compensation                 | Required if applicant has employees                            |
    | Unemployment insurance                | Required if applicant has employees                            |
    | Application fee                       | **\$125**                                                      |
    | Renewal fee                           | **\$62.50** per year                                           |
  </Accordion>

  <Accordion title="Out-of-State Contractors" icon="arrow-left-right">
    | Requirement                           | Detail                                                         |
    | ------------------------------------- | -------------------------------------------------------------- |
    | Employment security bond              | Required for contracts over **\$5,000**                        |
    | Public works bond (cities 500K+)      | Performance and liability bond for contracts over **\$10,000** |
    | Public works payment/performance bond | Required for contracts estimated at **\$25,000** or more       |
  </Accordion>
</AccordionGroup>

## Reciprocal agreements

Illinois does not maintain statewide reciprocal agreements for its regulated construction trades. No board-level reciprocity is documented in the source material.

<Info>
  If you hold an out-of-state credential and want to work in Illinois, contact the relevant agency directly to ask about any recognition pathways.
</Info>

## Types of licenses

Illinois offers a narrow set of state-level credentials. Most construction trades are not licensed at the state level.

<AccordionGroup>
  <Accordion title="Roofing" icon="house">
    * Limited Roofing Contractor (Residential)
    * Unlimited Roofing Contractor (Residential + Commercial)
  </Accordion>

  <Accordion title="Prequalification" icon="road">
    * IDOT Highway Prequalification
    * Capital Development Board Building Prequalification
  </Accordion>
</AccordionGroup>

## See also

<CardGroup cols={2}>
  <Card title="Midwest region guide" icon="map" href="/docs/jurisdictions/regions/midwest">
    Browse all Midwest jurisdictions for comparison.
  </Card>

  <Card title="Contractors guide" icon="hard-hat" href="/docs/personas/contractor">
    Cross-state guidance for contractors evaluating new jurisdictions.
  </Card>

  <Card title="Regulators guide" icon="shield-check" href="/docs/personas/regulatory-staff">
    Cross-state guidance for comparing regulatory models and agency structures.
  </Card>
</CardGroup>