MasterFormat® FAQs

What changes were made in the 2018 Edition? 
Updates include, but are not limited to, an expansion of Division 02 sections for Removal and Salvage of Construction Materials. This section now accounts for removal of many types of recyclable and salvageable materials. MasterFormat® 2018 also includes significant updates to the Door Hardware and Security Access sections. Clearer titles and descriptions of components considered Door Hardware versus Security Access Equipment will help users understand, specify, and classify that information. 
Can I view a list of the changes made? 
Upon release of MasterFormat® 2018, users can visit the Revisions section of the CSI website to view changes made to the standard. Purchasers also receive the MasterFormat® Transition Matrix which lists all changes made in the newest edition of MasterFormat®. 
How do I get my product specified in MasterFormat®? 
MasterFormat® does not contain specifications or specification templates. Additionally, CSI takes steps to avoid proprietary product or company names when assigning MasterFormat® titles. 

How much does it cost to access
Only users who have purchased the latest edition of MasterFormat or are CSI or CSC members can access the Numbers and Titles, Introduction and Guides, and the full online content of the MasterFormat standard.

How current is the data on
The site contains the most up-to-date version of MasterFormat information available.

I'm still working with MasterFormat 95 numbers. Is there a version of this site for that version? contains only the latest data, but MasterFormat 95 numbers can be converted in the Transition Guide section. A Transition Guide is also available with purchase of the full MasterFormat standard

I want to submit a proposal to revise or add content to MasterFormat. How will I know the results of my revision proposal after I submit it?
You will be notified by email at your registered email address whenever the status of the proposal changes or information within it is updated.

CSI staff may contact you directly if needed to gain additional information for consideration of your proposal. More information on submitting a proposals and how the proposal is considered is available under "Revision Process." 

I have an idea that would be great to include on this web site. Do you accept feedback?
All feedback is welcome! Please send us an email at

Is there a license required to use MasterFormat?
To protect and ensure the reliability of MasterFormat, its content is protected by copyright. Anyone using MasterFormat does so under the license granted by the End User License Agreement. This EULA provides a license for end users to use MasterFormat to document and deliver construction projects.

For any commercial use in a derivative product or resource that employs MasterFormat numbers or titles, contact CSI at

I have a question that was not included on this page.
Please send your detailed question to

When will the next edition of MasterFormat® be available?
The current plan is to publish a revision to MasterFormat in June 2020.