Construction Specifications Institute
Non-profit OrganizationsTennessee, United States51-200 Employees
CSI is a national nonprofit organization focused on improving the documentation, management, and communication of building information for the construction sector. It develops construction standards and formats, such as MasterFormat and UniFormat, and promotes them through master guide specifications and building information management solutions. It offers professional training and certification programs, including CDT and CCCA, and publishes Construction Specifier magazine to reach decision-makers who specify building products. Based in Brentwood, Tennessee, CSI serves a cross-section of industry professionals—specifiers, architects, contractors, and suppliers—who work with construction documentation. A notable recent development is the 2025 launch of the MasterFormat system to standardize the organization of construction documents.