4+ years of perfection in every project.
With a presence in 50+ global locations.
Site development is the process that serves as the basis for any construction project. The project could incur increased costs, delays, and significant rework if the quantities are incorrect at this stage.
COMET Estimating provides site development estimating services for UK contractors and developers. We deliver clear estimates for site preparation and external works so you can plan effectively and keep your project on track.
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Years of
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Work with a team that delivers consistent, detailed, and on time estimates so you never face delays or guesswork.
Best Rating in your town in estimating business
COMET Estimating provides site development estimating services for UK contractors and developers. We prepare accurate breakdowns for external works and site preparation so you can tender confidently.
We estimate site preparation works including clearance, excavation, and early stage site activities.
We estimate groundworks scope such as sub base works, external surfaces, and site preparation items.
We estimate drainage systems, pipework, manholes, and external utility installation works.
We estimate access roads, pathways, kerbs, and external hardstanding areas based on drawings.
We estimate external slabs, paving works, and related site development materials and quantities.
We estimate site development works for redevelopment projects, including phased works and complex site conditions.
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Send site drawings, external works layouts, and any relevant scope information.
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Our team measures quantities and prepares a site development estimate with clear breakdowns.
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You review the estimate and request revisions if needed. We update the estimate based on changes.
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You receive a final site development estimate ready for tendering, budgeting, and planning.
WHY CHOOSE US
Site development is one of the most important phases of construction, and errors here can affect the entire project. COMET Estimating provides accurate site development estimates for UK contractors and developers.
Our team understands site preparation, groundworks, drainage, and external works scope. We estimate carefully to support accurate tender pricing.
We deliver site development estimates in a clean format that is easy to price. This helps you plan materials, labour, and plant requirements properly.
Wrong site quantities can lead to major cost increases and rework. Accurate estimating helps you stay in control and reduce risk during delivery.
Site development is the foundation of your project, and mistakes here can cost you time and money. COMET Estimating provides accurate site development estimates so you can price groundworks, drainage, and external works properly. Share your site plans today and get a professional estimate ready for tender.



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Wrong quantities for excavation, drainage, and external works can quickly increase costs beyond budget.
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Site development delays can slow down the project start and affect all following construction stages.
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Poor estimating can lead to incorrect planning for plant, access, and site operations, increasing risk.
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Over ordering aggregates and materials creates waste and extra handling and disposal costs.
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Missing items such as drainage requirements can lead to inspection failures and costly corrections.
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Site development issues can damage client trust and create disputes over programme and costs.
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Discover why COMET Estimating is trusted for site development estimating across the UK. Our estimates help contractors plan groundworks, drainage, and external works properly, reducing risk and improving cost control.
Yes, we can estimate drainage works and external utility scope based on drawings. This includes key external works quantities.
Site development is the foundation of your program and budget. COMET Estimating provides clear site development estimates so you can price groundworks and external works correctly and reduce risk from day one.
30 Riverhead Close, London, Walthamstow, England, E17 5PY
Monday - Friday
09:00 Am Until 05:00 PM