Each general construction contractor other than roofing and public works won’t be regulated by Illinois state. However, on the local level through municipalities and counties they will. The roofing contractor will require certification of the state.

Most construction contractors don’t need to be licensed in Illinois. Roofing contractors are the exception.

How to Obtain an Illinois Contractor License

Any additional information can be made available from the following:

Department of Professional Regulation

Experience, Exam, or Education: Are These Required for Contractor Licenses in Illinois?

Check in with the local municipality and county for any requirements.

Illinois Contractor Continued Education: It is Required?

Check in with local municipality and county.

NASCLA Accredited Commercial Contractor: Does Illinois Allow the License?


General Contractor Commercial Contractor Licensure in Illinois: Does the State Require It?

Check in with your local municipalities and county.

Does Illinois Have any Reciprocity With Different States?

The out-of-state corporations are required to obtain a certificate of authority from Illinois secretary of state in order to engage in any business within the state of Illinois.

Question: How do I register my construction company in Illinois? 

 Register your Illinois Business With:

Illinois Secretary of State
501 S. Second St., Ste 328 (or: Ste 351)
Springfield, IL 62756


(217) 782-6961


What forms do I need to register my new company in Illinois?

Register your Business in Illinois                  

Forms   Tax Forms  


Question: How do I look up a company in Illinois or see if a company name is available to register?  

Answer: Use this link to see if your company name is available in Illinois Entity Search  

Where can I get the books?

AMAZON – Click on the book to order:

NRCA Pocket Guide to Safety
NRCA Pocket Guide to Safety
Repair Manual for Low-slope Membrane Roof Systems
Repair Manual for Low-slope Membrane Roof Systems
Roofing Construction Estimating

Roofing Construction EstimatingThe NRCA Safety Manual

The NRCA Safety Manual