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If you are a current student in our CSL Prep Class, this is where you will find the practice exams and documents related to the class.  Email us at masscodeprep@gmail.com if you have any problems. 


IRC Practice Test #1 Password Required 

IRC Practice Test #2 Password Required 


ALL BOOKS Practice Test #3 Password Required

Current Students - Final Exam, Password Required

ClassMarker Test Taking Guide


IECC Energy Code

Lead Safety in Construction/OSHA 

Informational Video AAB 

Letter of Attestation

Information Booklet and Application for Exam  ** new information. make sure to have application notarized on your attestation letter and the last page of the application. If sending W2's, notarized the last page only.

HIC (Home Improvement Contractor) License Information 

CSL Licensing 

OPSI Website (Office of Public Safety and Inspections) Formerly DPS

Request a duplicate renewal form

Code Book Numbering Explained

Air Barrier and Insulation Installation Checklist