License Classifications & Requirements

Types of License

Class A, General Contractor. A Class A license shall entitle the holder thereof to construct, remodel, repair, and demolish any structure.

Class B, Building Contractor. A Class B license shall entitle the holder thereof to construct, remodel, repair, and demolish all structures not exceeding three stories in height. A Class B license shall also entitle the license holder to perform non-structural remodeling, tenant-finish, and repairs of all structures.

Class C, Residential Contractor. A Class C license shall entitle the holder thereof to construct, remodel, repair, and demolish single family or duplex residences and buildings accessory to them.

Class D, Sub-Contractor. A Class D license shall entitle the holder thereof to work for a Class A, B or C Contractor in providing support services and responsibilities and shall include structural concrete, framing, masonry, roofing and drywall.


Contractor applicants shall be licensed by satisfying one of more of the following provisions.

Certificate of Competency from a nationally-recognized testing institution.

Experience - Until one year after these regulations are adopted or one year after a municipality or county contracts with the CLRB to handle their contractor licensing, a license my be obtained upon verification that a person or a firm's designated representative (qualifying individual) has the required number of years of full-time experience in the building construction industry for that license. ·        

  • Class A License - 15 years or more experience, General Contractor. ·        
  • Class B License - 10 years or more experience, Building Contractor. ·        
  • Class C License - 5 years or more experience, Residential Contractor. ·        
  • Class D License - 5 years or more experience, Sub-Contractor.

Bachelor's Degree in engineering, architecture, or construction science from an accredited college or university.

Provisional License holders may obtain a regular license upon the completion of not less than 32 hours of codes-related education prior to the expiration of such provisional license.

Reciprocity - The applicant has been licensed in other states or municipalities within or without the state of Idaho to obtain a contractor's license based upon such person's or firm's licensure in such other state or municipality.

Contractors licensed through the City of Idaho Falls shall have reciprocal admission based on their class of license. Qualifying individual name must match Idaho Fall records. If requesting a different class, qualifications must be met and a certificate of experience attached.


New Registration class A, B and C


New Registration class D


Renewal class A, B and C


Renewal class D


Late Fee (For renewals received after March 31, 2009)


Name change (Qualifying Individual)


CARD fee for each additional card copy requested

$5 each


All licenses expire December 31, 2009



Upcoming Training...

Online Training Enrollment Form


2015 IRC Significant Changes – 8 hours code – 9 am to 4 pm at the Idaho Falls City Annex Council Chambers, 680 Park Avenue, Idaho
December 12, 2017

Commercial and Residential Roofing Applications – 9 am to 4 pm – R&S Supply, 4610 Haroldsen Drive, Idaho Falls
December 14, 2017

2015 International Energy Conservation Code Update 9 am to Noon – 4 hours code – City of Idaho Falls Council Chambers, 680 Park Avenue, Idaho Falls
December 19, 2017

Contractor Lien Laws – 1 pm to 4 pm – 4 hours business - City of Idaho Falls Council Chambers, 680 Park Avenue, Idaho Falls
December 19, 2017

IECC/Lien Laws
December 19, 2017

January 4, 2018

IDABO Education Institute (Codes IBC, IRC)
January 23-26, 2018

Roof Assembly
February, 2018

Trusses-Engineered Wood/Special Inspections IECC
March, 2018

Smart Home Technology/Concrete
April, 2018

Project Management/Risk Management
May, 2018


HERS Rater/RESNET Training


What's New...

Building industry groups have been meeting for several months in Boise to work out code adoption issues for 2013. On the table under discussion are the 2012 IBC, IRC, IECC and existing Building codes. To date, it appears that their recommendation is to adopt the 2012 IBC and Existing Building Code, and to look at possible amendments to the IRC and IECC to make them less onerous. Please see the attachments for a progress report and analysis.
2012 IECC Code Amendments
Code Collaborative Mtg Notes

Per-hour formula proposed for building-permit charges

The 2009 building code changes will become effective January 1, 2011 in Idaho

Idaho’s PBCLRB announces the launch of the new Professional Building Contractor license program.

Where to get code books -

New Energy Savings and Discounts...

New Home Incentives

New Homes Heat Pump Water Heater Incentives

New Homes Heat Pump Incentives

Energy Efficient Home Credit

New Homes Whole Home Performance Path Incentives

Tax Credit for Home Builders


CLRB is looking for contractor board members