Division 27 (ICT infrastructure, structured, network, or communications cabling)

Definition

Division 27 (ICT infrastructure, structured, network, or communications cabling) is the standard section of the Construction Specifications Institute (CSI) MasterFormat used in commercial construction documents to define all low voltage communications infrastructure requirements. It covers voice and data cabling, fiber optic networks, distributed antenna systems, audiovisual infrastructure, and associated hardware. General contractors, project owners, and technology consultants rely on Division 27 (ICT infrastructure, structured, network, or communications cabling) specifications to solicit bids, define scopes of work, and hold low voltage contractors to documented performance standards. Compliance requires familiarity with TIA/EIA standards, manufacturer requirements, and installation best practices.

Frequently Asked Questions

What does Division 27 (ICT infrastructure, structured, network, or communications cabling) cover?

Division 27 (ICT infrastructure, structured, network, or communications cabling) covers all communications and ICT cabling infrastructure — including structured copper and fiber cabling, telecommunications room buildouts, audiovisual cabling, security cabling pre-wire, and distributed antenna systems. It does not cover electrical power wiring (Division 26) or fire alarm systems (Division 28).

Who performs Division 27 (ICT infrastructure, structured, network, or communications cabling) work?

Division 27 (ICT infrastructure, structured, network, or communications cabling) work is performed by licensed low voltage or communications cabling contractors. On most commercial projects, the general contractor subcontracts this scope to a specialty contractor such as Commercial Cabling Company, who is responsible for reading the project specifications, procuring compliant materials, and completing all installation and testing documentation.

Is Division 27 the same as low voltage cabling?

Division 27 (ICT infrastructure, structured, network, or communications cabling) is the construction specification section that governs low voltage communications cabling — but the two terms are not interchangeable. Low voltage cabling is the physical trade category; Division 27 (ICT infrastructure, structured, network, or communications cabling) is the document framework defining standards, materials, testing, and documentation requirements.

Why Division 27 (ICT infrastructure, structured, network, or communications cabling) Matters

Division 27 (ICT infrastructure, structured, network, or communications cabling) specifications are the binding contract language for communications infrastructure on commercial construction projects. Contractors who cannot read, interpret, and comply with these documents are ineligible for most institutional and government bids.

How Commercial Cabling Company Uses It

Commercial Cabling Company performs Division 27 (ICT infrastructure, structured, network, or communications cabling) scoped installations on new construction and tenant improvement projects throughout Arizona and Nevada, working directly from construction documents and coordinating with general contractors.

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