The take-off guide
What is a construction take-off?
A construction take‑off, also called a quantity take‑off or material take‑off, is the list of quantities measured from a project's drawings: the lengths of wall, the areas of floor, the counts of doors and fixtures. Estimators and quantity surveyors price the work from it, which puts it at the start of almost every construction budget.
Four measures behind every budget
A material take-off, or MTO, uses the same measures to list what has to be bought.
Lengths
Walls, pipework, ductwork, cable runs and anything else priced by the metre.
Areas
Floors, ceilings, finishes and roofs, priced by the square metre.
Counts
Doors, columns, fixtures and equipment, priced by the item.
Volumes
Concrete and excavation, worked out from an area and a depth.
How to do a construction take-off
Collect the current drawings
Start from the latest issued revision and its specification. A perfect take‑off of an old drawing is still wrong.
Confirm scale and units
Check one known dimension before you measure anything. Millimetres read as metres is a 1000× error on every line.
Break the work down
Split the job by trade or service, so each quantity lands with the person who will price it.
Measure every item
Work through lengths, areas and counts, one trade at a time, and mark what you have covered.
Record the basis
Note how each figure was reached, such as gross area or wall centreline, so a reviewer can follow it.
Check, then hand over
Check the quantities against the drawing, then pass the schedule to pricing.
What a take-off looks like
These rows are from a floor plan made up for this demonstration, measured by hYYa and not edited.
An AI draft, like any take-off from hYYa. See the drawing and the full sheet →
Three ways to get it done
By hand
A printed drawing, a scale rule and a highlighter. Simple and familiar, and slow on a large package.
On screen
Clicking along lines in measuring software. Faster than paper, and still one click per run.
With AI
The software reads the drawing and drafts the quantities for a person to check. The file you start from decides how much it can do.
The file decides what you can measure
Five mistakes worth avoiding
The wrong revision. Confirm the issue date before you start, and again before you hand over.
The wrong scale or units. One unchecked dimension can throw off every quantity in the schedule.
Counting a wall twice. A wall drawn as two lines should be measured once, along its centreline.
Forgetting what is gross. State whether an area includes its openings, so nobody prices them twice.
No record of the basis. A figure nobody can trace is a figure nobody can check.
Construction take-offs, answered
What is a material take‑off?
A take‑off focused on what has to be bought: the lengths of pipe, the areas of tile, the number of doors. Often shortened to MTO, it turns a drawing into a list of materials to price and order.
Is a quantity take‑off the same as a material take‑off?
Often used interchangeably. A quantity take‑off measures everything in the scope, including lengths, areas and counts. A material take‑off narrows that to what has to be bought.
What is the difference between a take‑off and a bill of quantities?
The take‑off is the measuring. The bill of quantities is the formal, itemised document built from those measurements, which contractors price.
Who does a construction take‑off?
Usually a quantity surveyor or an estimator, working for a contractor, a subcontractor or a client's cost consultant.
What is the difference between a take‑off and an estimate?
A take‑off says how much. An estimate says what it will cost. The take‑off comes first, and the estimate applies rates, labour and overheads to its quantities.
Can AI do a construction take‑off?
Yes, as a draft for a person to check. Software can measure the geometry inside a CAD file or a vector PDF rather than a picture of the drawing, and every quantity should still be checked against the drawing before it is used.
How does hYYa do a take‑off?
hYYa measures lengths, areas and counts from the drawing's own geometry, shows the basis for every quantity, and exports to Excel. It reads DXF and vector PDF, and binary .dwg in hYYa Cloud. It measures; it does not price.
Measure the drawing, not the picture of it.
hYYa turns your drawings into a draft take-off in Excel, with the basis on every row. AI take-off for surveyors →
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