You've got the drawings, you need a price, and you don't have the hours in the week to measure the job properly yourself. Send them over and it can feel like sending work into a black box. So here's our quantity takeoff workflow, laid out plainly, so you know exactly what happens to them and why.
None of it is complicated. It's just done in the same order, every time, without skipping the awkward bits.
Before anything is measured, we agree what you need back and when. A full priced estimate, a bill of quantities, or quantities only for you to price yourself. We also agree a fixed fee up front, so you know the cost before any work starts. Your tender deadline sets the date the finished takeoff has to be with you, and everything else is planned back from it.
The drawings come in and get checked
We start with what you send, whatever state it's in: full drawing sets, a single sketch, a spec with only a few drawings behind it. PDF drawings are fine. Nothing gets guessed at this stage.
The first pass is a check, not a measure. Does the drawing set agree with itself? Do the plans match the sections? Is there a specification, and does it cover what the drawings show? If a detail's missing or a dimension doesn't add up, we come back to you before we measure a thing, rather than picking a number and hoping it's close. Most queries at this stage are small. Some of them save a whole line of the estimate from being wrong.
Typical queries look like this: a window schedule that lists one more opening than the elevations show, a floor build-up in the spec that doesn't match the section, a drainage layout that stops at the boundary with no indication of where it connects. None of them are anyone's fault. Drawings are produced under pressure too. But each one, left unasked, becomes a guess, and guesses are what this whole process is designed to get rid of.
The heart of the quantity takeoff workflow: measuring every element
This is where most of the hours go. Each part of the job is taken off on its own, floor by floor, element by element: substructure, frame, walls, floors, roof, windows and doors, finishes, services, external works, whatever the drawings show. Quantities are measured to NRM2, so the whole job comes out in a consistent, recognised order rather than a list built around whatever caught the eye first.
A few habits that keep the measure honest:
- Measure what's drawn. Quantities come from the drawings and spec, not from what a job like this usually needs.
- Keep units consistent. Linear metres, square metres, cubic metres or numbers, as NRM2 sets out for each item.
- Mark the drawings as you go. Every measured area and run is marked up so nothing gets measured twice or missed.
- Deal with openings properly. Walls measured with openings adjusted, and the lintels, cavity closers and reveals that come with them picked up.
- No round numbers for convenience. Nothing gets bundled into a lump because it was easier than measuring it.
A takeoff is only as good as the item nobody noticed. The workflow exists to make sure somebody did.
Rates go against real quantities
Once the quantities are set, each one gets priced against current UK rates for that type of work, local to the job, not a single figure spread across the whole building. Anything that can't be fully quantified from what you've sent (a spec point still open, ground conditions nobody's confirmed) gets flagged as its own item rather than folded into a total where it disappears.
If you only asked for quantities, this step is yours. You get the measured takeoff and price it with your own rates and sub quotes. Either way, the quantities underneath are the same, and that's the part that takes the time.
You get a breakdown, not a black box
What comes back, through the client portal, is a full breakdown, item by item, with a summary and a cover page in front of it, ready to hand to a client without you rewriting a word of it. You can see exactly how the total was built, check any line you want to against the drawings, and stand behind the number because you know what's in it.
It's ready before the tender deadline is breathing down your neck rather than after it, which leaves you time to go through it, add your own sub quotes where you have them, and set your margin properly instead of in the last half hour.
Why the order matters
You could do all of this in a different order. Plenty of rushed takeoffs do: start measuring the bits that look expensive, price as you go, go back for the rest if there's time. The trouble is that the bits left till last are the ones that get missed, and they're usually the small, fiddly items that add up. Checking first, then measuring everything, then pricing, is slower on paper and quicker in practice, because it doesn't need redoing. It also means that when a revised drawing turns up halfway through, the changes can be traced to specific measured items instead of starting again.
If your drawings are PDFs, which they usually are, there's more on how that side works in a takeoff built straight from PDF drawings.
A quick way to judge any takeoff
Whoever measures your job, ask for the marked-up drawings or a list of queries raised. A good quantity takeoff workflow leaves a trail: questions asked, areas marked, assumptions written down. If a takeoff comes back with no queries and no marked-up sheets, it's worth asking how anyone knows nothing was missed.