All 24 CSI MasterFormat Divisions
Every estimate is organized the way you bid — by division, not by guesswork. Browse by category below, or jump straight to the division you need.
General
Project-wide overhead that applies before any trade breaks ground.
Sitework
Everything that happens before, below, and around the building.
Existing Conditions
Quantities tied to what's already there before new work can start — demolition,…
DIV 31Earthwork
Cut, fill, and grading quantities calculated from the civil set — the division where…
DIV 32Exterior Improvements
Everything outside the building envelope — paving, landscaping, and site amenities…
DIV 33Utilities
Site utility quantities from the civil drawings — water, sewer, and storm systems…
Structure
The load-bearing bones of the building.
Envelope
What keeps the weather out and the building framed.
Wood, Plastics & Composites
Rough carpentry framing counts plus finish carpentry and millwork — the division…
DIV 07Thermal & Moisture Protection
The building envelope's defense layer — insulation, waterproofing, and roofing…
DIV 08Openings
Every door, window, and glazed opening counted and scheduled — a division where…
Interiors
Finish-level scope owners actually see and touch.
Finishes
The most visible division to an owner — drywall, flooring, and paint quantities that…
DIV 10Specialties
The small-line-item division that's easy to underprice — signage, partitions, and…
DIV 12Furnishings
Casework and furnishing quantities for the spaces that need to be move-in ready at…
Specialty
Owner-furnished equipment and non-standard construction.
Equipment
Owner-furnished and contractor-furnished equipment quantities, scoped so nothing…
DIV 13Special Construction
The projects that don't fit a standard template — pools, pre-engineered structures,…
DIV 14Conveying Equipment
Vertical and horizontal transportation systems, priced with the long lead times…
MEP
Mechanical, electrical, plumbing, and low-voltage systems.
Fire Suppression
Life-safety systems quantities — sprinklers, standpipes, and suppression coverage…
DIV 22Plumbing
Domestic water, sanitary, and gas piping takeoffs down to fixture counts, sized…
DIV 23HVAC
Ductwork, equipment, and controls quantities for mechanical systems — one of the…
DIV 25Integrated Automation
The control layer that ties mechanical, electrical, and life-safety systems together…
DIV 26Electrical
Service, distribution, and device counts — a division where quantity errors show up…
DIV 27Communications
Structured cabling and low-voltage data infrastructure, scoped separately from power…
DIV 28Electronic Safety & Security
Fire alarm, access control, and surveillance system quantities — priced separately…
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