Canadian National Master Construction Specification

The National Master Specification (NMS) is the most comprehensive master specification in Canada, serving as an easy-to-use framework for writing construction project specifications.

NMS overview

View more general information regarding the NMS

Table of contents

View the sections that are found in the NMS


View the latest updates of the NMS, published twice a year

User's guide

Provides specification writers basic information about using the NMS

Purchase a copy

How to purchase your copy of the NMS through one of our publishers

Frequently asked questions

Answers to commonly asked questions about the NMS

NMS access

Information on how to access NMS content