Construction estimating software does one main job. It turns drawings into a priced Bill of Quantities, with no measuring by hand. People also call it building estimating software, or just estimating software. Quantity takeoff is the slow part, and it disappears again with every design revision if you measure manually. Vendors report that the right tool cuts that work substantially (Buildsoft claims around 66% off manual methods, Causeway up to 90% on BoQ production). This comparison covers the four main tools used by UK quantity surveyors and estimators: Cubit (Buildsoft), Causeway Estimating, CANDY (CCS/RIB), and Bluebeam Revu.
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Ordinary 2D takeoff means measuring by hand, from a PDF drawing or a printed sheet. The estimator traces the lengths and areas, on screen or on paper. They then type the figures into the estimate. Every design revision requires re-measurement. This is time-intensive and error-prone; a missed revision can produce a materially wrong tender.
BIM-linked estimating connects the estimate to a 3D model where dimensions and materials are parametrically defined. When the architect changes a wall thickness, the model updates and the quantities update automatically: no re-measurement required. Time reductions of up to 80% compared to manual 2D takeoff are achievable on projects where a well-structured BIM model exists.
The practical constraint is that not all projects have a usable BIM model. Much UK construction work (particularly in the refurbishment and SME contractor market) is tendered from PDF drawings only. 2D takeoff tools remain essential even as BIM adoption grows in the new-build sector.
Cubit differs in one main way. The takeoff happens inside the estimate, on the same screen. The estimator does not move between a takeoff tool and the cost plan. CAD and PDF drawings are measured, and the extracted quantities flow into the BoQ automatically. Buildsoft claims average time savings of 66% compared to manual methods.
The limitations are well-documented: Cubit is desktop-only (Windows), with no cloud or mobile access. All work happens on one machine, which creates collaboration constraints for multi-person estimating teams working remotely. The learning curve is steep, and training is typically required before a new user is productive.
Cubit is offered in Standard (basic takeoff and BoQ), Pro (with BIM 3D integration), and Enterprise (advanced BIM takeoff) tiers. Pricing is subscription-based but not publicly listed.
Causeway is cloud-based with integrated BIM support and a CAD/BIM Measure tool for rapid takeoff from IFC, PDF, and CAD files. Causeway says it is trusted by over 400 organisations and claims time savings of up to 90% on BoQ production and 40% on takeoff.
Causeway does not publish per-seat pricing; it is quoted on application and positioned for mid-to-large practices rather than small contractors. It holds 4.0/5 on Capterra, though from just 1 review (checked July 2026).
Practitioner feedback on Capterra describes Causeway as "clunky" and in need of modernisation compared to Cubit or newer alternatives. The interface has not kept pace with the underlying capability. It is well-regarded for large dataset processing speed (generating BoQs for major infrastructure projects) but the user experience complaints are consistent.
CANDY is used by major UK contractors for infrastructure, energy, water, civil engineering, and building work. Its strength is that it builds each rate from the ground up. It uses labour, plant, materials and subcontractors, and not a library of rates. On a complex job that gives a more accurate figure, and one you can check. CANDY also keeps a live link between the estimate and the project programme, providing cost-loaded schedule information for management and clients.
CANDY is distributed through RIB Software and is priced on application. It is not built for a small practice. It serves large contractors and specialist civil engineering firms. They get their set-up cost back from the depth of its modelling.
Bluebeam is primarily a PDF collaboration and markup tool that has takeoff capability built in. Estimators use it to measure exactly from a PDF drawing. It gives length, area, volume, depth and count. Its counting tool updates the totals as you add items. Measurements embed directly on the PDF drawings and can be linked to Excel for cost plan compilation.
Bluebeam is not a standalone estimating platform in the way Cubit or Causeway is. UK quantity surveyors mostly use it to check a measurement, and to work together. They share marked-up drawings with the team and the client while they plan costs. They do not use it as their main estimating tool. Its value is in the quality and speed of PDF-based measurement and its real-time collaboration features. It is the most-reviewed tool here, at 4.7/5 on Capterra from 976 reviews (checked July 2026).
| Product | Primary use | BIM support | Deployment | Best suited to |
|---|---|---|---|---|
| Cubit | Takeoff + BoQ production | Pro/Enterprise tiers | Desktop (Windows only) | SME to mid-size estimators |
| Causeway | Estimating + BoQ production | Yes (IFC, CAD, PDF) | Cloud | Mid to large contractors |
| CANDY | Resource-based estimating | Yes (QTO module) | Desktop | Large contractors, civil/infrastructure |
| Bluebeam Revu | PDF takeoff + collaboration | No (PDF-based) | Desktop + cloud (Studio) | Measurement verification, team markup |
| Bespoke (ESRE) | Estimating linked to live job costing | As required | Web, you own it | Contractors wanting one source of truth from tender to final account |
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None of the four products above is an end-to-end estimating and project management system. They make the cost plan and the BoQ. Moving that data anywhere else is the problem. Into a project management system, to watch costs against the estimate on site. Into the accounts, to handle variations and the final account. Into a screen the client sees. Each one needs somebody to type it again, or a connection built for you.
You may want your estimate to feed job costing in Procore, in Xero, or in a system of your own. That connection is usually built for you, whichever estimating tool you use. The data formats differ between tools, and none of the four products listed above was designed with clean API exports as a primary feature. A commercial system of your own gives you one source of truth. It covers estimating, tendering and live job costing. Nobody types the figures again, and that is where the errors come from.
The re-entry above is the real cost in this article, and it is worth asking why nobody has fixed it.
An estimating tool holds a measured item in its own form, with its own identifier. A project system holds a cost line in another. Neither can point at the other. The only bridge is a person with a keyboard, or a connection you paid to build and must keep paying to hold together.
On engage.re a measured item, a rate, a cost line and a variation are declared once, with permanent identifiers. The measured quantity you priced at tender and the one you track on site are the same record in two states. There is nothing to re-enter, and nothing to reconcile.
Your firm still owns its own system. We explain how a whole sector shares one foundation in bespoke software for a whole sector. We describe that market in what does an interoperable software market look like.
It depends on what you do. For quantity surveying software in the UK, Causeway Estimating is the industry standard. For 2D takeoff and measurement, Cubit (by Buildsoft) is widely used. For integrated estimating and project management, HBXL EstimatorXpress is designed for UK house builders. For simple estimates by small builders, EasyEstimate offers the lowest entry point with prices from UK merchants.
Entry-level tools aimed at small builders are the cheapest, often a few tens of pounds per user per month. Mid-range 2D takeoff tools such as Cubit are subscription-based but quote pricing on request. Enterprise platforms (Causeway, CANDY) are priced on application and cost considerably more per seat. Cloud estimating has made the market more accessible, but most UK builders move to paid tiers for production use.
Integration between estimating and project management is the biggest gap in UK construction software. Most estimating outputs need manual re-entry into project management or ERP systems. Causeway offers the tightest integration within its own ecosystem. HBXL integrates estimating with planning. For cross-platform integration, expect custom API work. See our construction project management guide.
EasyEstimate offers a limited free tier. Most cloud tools offer 7 to 14-day free trials. Spreadsheet-based estimating is technically free but time-consuming and error-prone. For daily production use, most builders need paid software. See our BuildersAI alternatives guide for more options.
You can see this in a working system. The ESRE live construction demo opens with no login, and it shows the estimating work in this guide. Sign in as project manager and open the live estimate, or as client and see the breakdown. It is a working system, not a screenshot.