On-screen takeoff software
Tools such as PlanSwift, Bluebeam Revu, On-Screen Takeoff and STACK display your PDF or CAD drawings. The estimator first sets the scale from a known dimension, then draws over the plans: areas for slabs, floors and roofs, lines for walls, pipe and duct, and counts for fixtures, devices and doors. Each measurement is saved as a coloured condition, so anyone can see exactly what was counted.
Assemblies
Instead of measuring the same wall five times, an assembly links one measurement to every item it needs. A wall type measured once in linear feet produces studs, track, board on both sides, insulation, tape, compound and labor hours. Assemblies make takeoffs faster and keep quantities consistent.
Trade estimating databases
Trade systems such as Trimble Accubid, McCormick, AutoBid and IntelliBid carry thousands of material items with labor units. After takeoff, the estimator applies labor factors for height, building type and conditions and updates material pricing from suppliers.
Model-based (BIM) takeoff
When a Revit model exists, quantities can be extracted directly from model elements. It is fast for well-built models, but quantities are only as good as the model, so they still need checking against the drawings and specifications.
Earthwork software
Earthwork tools build an existing surface and a proposed surface from grading plans or CAD files and calculate cut and fill on a grid, by area and by material layer.
Excel
Whatever tool measures the quantities, almost every estimate ends in Excel for pricing, markups, bid leveling and sharing with owners, GCs and subcontractors.