Get ready for your Massachusetts Construction Supervisor License (CSL) exam with our 6-week live exam prep class, January 6 – February 7, 2027. Build your knowledge, boost your confidence, and prepare for exam day with expert instruction.
I wanted to take a moment to express my complete satisfaction with your online and in person course. Again and again throughout the years it is a pleasure doing business with the Mass Nail It Team!
–Joe S.
I just wanted to let you both know I passed my mass CSL on the first try thank you so much for your class. Even though sometimes I wanted to cry over the practice questions. I am grateful for them.
–Allyson M.
Mass Nail It was created to provide the latest in Massachusetts building codes to keep you updated with today’s ever changing industry. We are involved in all aspects of code development and we interpret the state specific regulations that are important to your livelihood. All of our courses are approved by the Commonwealth and meet or exceed the Massachusetts license renewal requirements in accordance with M.G.L. c78, Acts of 2008.
This year’s state budget bill enacted sweeping zoning reforms with significant changes for local land use permitting, in particular housing development. Signed by the Governor on July 9, 2026, the amendments to the state Zoning Act (excerpts here) (M.G.L. c. 40A) include:
The Office of Public Safety and Inspections recognizes that ductless mini-split systems (mini-splits) have increased in prominence as standalone retrofit installations, and this document seeks to provide guidance on the permit and license requirements for their installation. This guidance covers standalone installations in one and two-family dwellings
All of the Mass Nail It CSL and Hoisting classes have been approved by the Massachusetts Board of Building Regulations and Standards. Our online courses allow you to start, stop and resume your education at your own pace. Learn from the comfort of your own home, any time day or night. When your done with your course, simply download your BBRS approved certificate.
