Your estimating team can only work so many hours in a day.
When estimators are spending most of that time measuring drawings, building quantities and preparing takeoffs, they have less time to do the work that actually helps you win the job, reviewing scope, chasing subcontractor quotes, checking pricing, assessing risk and putting the bid together.
That is usually when contractors start looking at quantity takeoff outsourcing.
You don’t necessarily need another full-time estimator. Sometimes you simply need more estimating capacity when the workload gets heavy.
When does it make sense to outsource?
Quantity takeoff outsourcing is worth considering when:
- Your estimators are consistently overloaded.
- Several tenders are landing at the same time.
- Good projects are being passed on because your team can’t get to them.
- Senior estimators are spending hours measuring drawings.
- PMs or directors are getting pulled into takeoffs.
- Your tender workload goes up and down.
- You need more bid capacity, but aren’t ready to hire permanently.
The simplest test is this:
If your team has enough work to keep them busy, but not enough time to do all of it properly, you may have a capacity problem, not a people problem.
The problem isn’t the takeoff. It’s what your estimator can’t do while they’re doing it.
Takeoffs have to be done. There is no shortcut around measuring the work.
Depending on the project, that can mean measuring concrete, reinforcement, walls, floors, roofing, cladding, doors, finishes, MEP services and specialist packages from drawings, specifications and BIM models.
The issue is what happens around that work.
While your estimator is spending hours measuring drawings, they aren’t:
- Reviewing the specification
- Calling subcontractors for quotations
- Comparing supplier prices
- Checking scope gaps
- Assessing project risk
- Reviewing exclusions
- Challenging quantities
- Building the final estimate
- Deciding how aggressively to bid
And this is where things can get expensive.
A senior estimator doing a takeoff isn’t doing anything wrong. But if they are spending two days measuring drawings when they could have spent those two days reviewing five subcontractor packages and tightening the final bid, that’s a capacity decision worth looking at.
5 signs you’ve outgrown doing every takeoff in-house
1. You’re turning down work because there’s no time to price it
This is probably the clearest sign.
The project is right. The client is right. The margin could work.
But your team is already buried in three other tenders.
So you pass.
If that happens regularly, your estimating capacity is limiting your ability to bid.
That’s where external quantity takeoff services can help, not by replacing your estimator, but by giving them another pair of hands when they need it.
2. Your team is working right up to the deadline
When the takeoff starts late, everything else gets squeezed.
Pricing gets rushed. Scope questions don’t get answered. Quantities get checked at the last minute.
And everyone ends up working towards the clock rather than working through the bid properly.
Moving the takeoff work forward can give your internal estimator more time to review and challenge the numbers before the bid goes out.
3. Your senior estimator is doing work that someone else could do
Your senior estimator knows your business, your clients, your margins, and your market.
That experience is valuable.
If they are spending most of their day measuring drawings, ask yourself:
Is that really where you need their time?
The answer may still be yes.
But if the same measurement work could be handled reliably by an external team, their time could be redirected towards the parts of estimating that need their experience.
4. Your tender workload is unpredictable
One month you have three tenders.
The next month, you have eight.
Hiring permanent staff to cover the busiest month may leave you carrying that cost when the pipeline slows.
This is where quantity takeoff outsourcing can be useful.
You add capacity when you need it, without necessarily changing the structure of your entire estimating department.
5. Your pipeline is growing faster than your estimating team
More enquiries sound like a good problem.
Until your estimating team can’t keep up.
If you’re receiving more opportunities but struggling to turn them around, outsourcing part of the takeoff process can help you increase bid capacity without immediately adding another permanent role.
What should you outsource, and what should stay with you?
This is where we think contractors should be careful.
You don’t have to outsource the estimate.
You can outsource the time-consuming production work and keep the commercial decisions in-house.
| External team | Your estimating team |
|---|---|
| Drawing measurement | Final pricing |
| Quantity takeoffs | Labour rates |
| Material takeoffs | Supplier negotiations |
| BOQ preparation | Subcontractor negotiations |
| Takeoff markups | Risk allowances |
| Revision comparisons | Markup |
| Quantity checks | Final bid decision |
The external team produces the quantities.
Your team decides what those quantities mean commercially.
That’s particularly important for contractors and subcontractors who already have their own labour rates, supplier relationships, historical costs and pricing strategy.
You don’t always need another estimator
There is another way to look at the decision.
Suppose you receive five tenders in one week.
Your lead estimator needs to review drawings, complete the takeoffs, chase subcontractor quotations, review specifications, build the estimates and get everything ready for submission.
Trying to do all of that personally creates an obvious bottleneck.
Instead, two of the takeoff packages can be sent to an external quantity takeoff team.
The quantities and BOQ come back.
Your estimator reviews them, applies your pricing, checks the subcontractor quotations and makes the final commercial call.
You haven’t outsourced your estimating.
You’ve simply moved the part of the process that was slowing everything else down.
That distinction matters.
What should you look for in a takeoff partner?
Don’t choose a provider simply because their hourly rate is lower.
The real question is:
Will my estimator save time after receiving the takeoff?
A good quantity takeoff partner should be able to work within your existing process.
1. Measurement standards
The team should understand the measurement requirements for the market and project.
For UK projects, this may mean working in line with the relevant RICS New Rules of Measurement requirements. RICS provides standard measurement guidance for construction cost management, including detailed measurement of building works.
For Irish projects, the relevant requirements may include the SCSI Agreed Rules of Measurement. For US projects, the team should understand the project’s classification, specification and estimating requirements, including the use of CSI MasterFormat where applicable.
The same principle applies in other markets: the provider needs to understand the measurement conventions and project requirements rather than simply measuring what’s visible on a drawing.
2. Software
Ideally, the external team should be comfortable with the tools your estimators already use, such as:
- CostX
- Bluebeam
- PlanSwift
- Cubit
- OST
- AutoCAD
- Revit
- Excel
3. Deliverables
Agree this before the work starts.
Do you need:
- A quantity schedule?
- A BOQ?
- Marked-up drawings?
- A material takeoff?
- Trade summaries?
- Revision comparisons?
4. QA
This is non-negotiable.
Your external provider should have a clear process for checking quantities, assumptions, exclusions and drawing revisions before the takeoff reaches your estimator.
Because the whole point is to save your estimator time.
If they have to redo the takeoff, you’ve simply moved the work around.
Common mistakes contractors make when outsourcing takeoffs
Choosing on price alone
A 15-18 bucks/hour takeoff that takes your estimator another eight hours to fix isn’t cheaper.
Look at the finished output, turnaround and QA, not just the rate.
Sending drawings with no clear scope
“Please do the takeoff” isn’t a brief.
Your provider needs to know what’s included, what’s excluded, what measurement approach to follow and what the final output should look like.
Sending the job the night before the bid
Outsourcing doesn’t remove the need for planning.
Give the takeoff team enough time to review the documents, raise questions, complete the measurement and carry out QA.
Giving away the commercial decision
Your provider can help with quantities.
Your team should still own pricing, risk, markup and the final bid.
So, should you outsource your quantity takeoffs?
If your estimating team has spare capacity, probably not.
But if your estimators are constantly stretched, good tenders are being missed, senior people are buried in drawings or your bid deadlines are becoming a weekly fire drill, it’s worth looking at.
You don’t have to replace your estimating team.
You don’t have to outsource every estimate.
And you don’t have to hire another full-time estimator just because your workload has temporarily increased.
Sometimes, you just need another set of hands on the takeoff.
How Precon supports contractors
Precon works with contractors, subcontractors and cost teams that need additional capacity for quantity takeoffs, material takeoffs and BOQs.
We can work alongside your existing estimating team, taking on the measurement and production work while your team retains control of pricing and commercial decisions.
The goal is simple: give your estimator a takeoff they can actually use, not another spreadsheet they have to rebuild.
Explore Precon’s Quantity Takeoff & Estimation Services
Frequently asked questions
Can I outsource only one part of a quantity takeoff?
Yes. You can outsource a specific trade, project, drawing package, or overflow workload rather than your entire estimating process.
Can subcontractors outsource quantity takeoffs?
Yes. Specialist subcontractors often use external takeoff support when enquiry volumes increase, and their internal team needs to price more opportunities without adding permanent estimating capacity.
Can UK, US, and Irish contractors outsource quantity takeoffs?
Yes. The important consideration is whether the provider understands the measurement requirements, project documentation, and workflow expected for UK tenders.
Does outsourcing mean giving up control of the estimate?
No. Many contractors keep pricing, labour rates, risk, markup, and the final bid decision in-house while outsourcing the measurement and BOQ production.
About the author
Khushboo Sinha | Associate Director – Global Growth, Precon India
Khushboo works with contractors, subcontractors, and AEC firms across international markets, helping them build scalable support across preconstruction, estimating, BIM, VDC, and project engineering.
She helps construction businesses expand their technical and preconstruction capacity without taking on the full overhead and long-term commitment of building every function in-house, giving teams the flexibility to scale support around their projects, pipeline and growth.