What Drawings and Documents Do You Need for a Building Cost Estimate in the UK?
Blog Construction Estimating Services What Drawings and Documents Do You Need for a Building Cost Estimate in the UK? Accurate…
Outsourcing your estimating means passing some or all of the takeoff and pricing work to an external team. COMET Estimating LTD does this for UK builders and contractors, working from your drawings and specifications.
It suits firms with more tenders than estimators, or those who’d rather not add another full-time salary. You stay in control of the bid, and we do the measuring and costing behind it. Send us your documents and we’ll tell you what’s involved.
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Outsourcing your estimating gives you extra capacity without the salary, employer on-costs or software licenses that come with an in-house hire. Takeoffs and cost estimates are prepared from your drawings and specifications, and you don’t carry a full-time position through the quiet spells between tenders.
You also gain flexibility that a fixed team can’t always offer. Whether you’re pricing one tender or several in the same week, outside support can take on part of the load, leaving your own estimators free to concentrate on the bids that matter most.
Avoid the ongoing salary, on-costs, training and software licenses of a permanent estimator, and pay for estimating support as you need it.
Work with estimators who handle residential, commercial and industrial projects, rather than relying on a single person to cover every type of job.
When takeoffs and cost breakdowns are prepared externally, your team has longer to review the numbers and refine the bid before the deadline.
Detailed quantity breakdowns give you something solid to check supplier and subcontractor quotes against, so gaps and overlaps are easier to spot.
Increase support when tenders bunch up and reduce it when work slows down, without recruitment costs or redundancies.
Free your own team from measuring and spreadsheet work so they can give more attention to projects on site and to the bids that matter most.
01
Upload your drawings, specifications and any other tender documents. The more complete the information, the more reliable the estimate will be, so include addenda, schedules and notes on what you want priced.
02
We review the scope and send a quotation for the estimating work, along with an expected timeframe. You’ll know the cost and timing before anything starts.
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Once you approve the quotation, we confirm the project details with you and begin measuring and pricing the work.
04
You receive a detailed cost breakdown to use for your tender or budget. If you’d like changes, or the drawings are revised, tell us and we’ll update it.
Each takeoff is prepared by an estimator working from your drawings and specifications, not simply generated by software.
Your quotation includes an expected timeframe, so you know when to expect your estimate and can plan around your deadline.
Every estimate is set out so you can use it in a tender, budget or cost plan.
We can work to your workload, whether you need one estimate now and then or regular support through busy tender periods.
We’re available for questions, revisions and variation pricing as your project develops.



Get accurate estimates that improve your bid quality and help you secure more projects with confidence.
We want to be a trusted estimating partner for contractors across the UK. Our vision rests on a simple standard: every client should be able to read the numbers and see the real scope and cost of their project, without the extra overhead of building and running an in-house estimating team. We see outsourced estimating as support for your team, not a replacement for it. It should fit around your tender deadlines, whether you need help on one bid or several at once.
Our mission is to provide clear, well-organised cost estimates, typically within 1 to 2 days, that help contractors price with confidence. We work from your drawings and specifications, so the figures give you a sound basis for bid day and the budget conversations that follow. Our support covers 20+ trades on projects anywhere in the UK, so you can send work over as it comes in. An estimate is only as good as the information behind it, so clearer drawings and specifications give firmer figures.
Absolutely brilliant! Spot-on estimates, quick turnaround, and zero hassle. Honestly, I wouldn't go anywhere else.
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