Quantity takeoff — measuring quantities from drawings to produce a Bill of Quantities — accounts for 50–80% of an estimator's time on a project using manual methods. The right software can reduce that by 66–90% and eliminate the re-measurement required whenever the design changes. This comparison covers the four main tools used by UK quantity surveyors and estimators: Cubit (Buildsoft), Causeway Estimating, CANDY (CCS/RIB), and Bluebeam Revu.
Traditional 2D takeoff means measuring quantities manually from PDF drawings or printed sheets — the estimator traces lengths and areas on screen or on paper and enters the figures into an 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's key differentiator is that quantity takeoff happens directly within the estimate on the same screen — the estimator does not toggle between a separate 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 has been adopted by over 400 UK contractors and claims time savings of up to 90% on BoQ production and 40% on takeoff.
Published pricing starts from approximately £50 per user per month for small businesses, with implementation costs from £5,000 for small firms to £50,000 or more at enterprise scale. This puts Causeway out of reach for smaller contractors but appropriate for mid-to-large practices.
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 first-principles resource-based estimating — building up rates from resources (labour, plant, materials, subcontractors) rather than using a rate library — which improves accuracy and auditability on complex projects. CANDY also maintains a dynamic 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 positioned for small practices — its market is large contractors and specialist civil engineering firms where the depth of its resource modelling justifies the setup investment.
Bluebeam is primarily a PDF collaboration and markup tool that has takeoff capability built in. Estimators use it for precise measurement from PDF drawings — length, area, volume, depth, count — with an automated counting tool that updates totals automatically as items are added. 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 use it primarily for measurement verification and collaboration — sharing marked-up drawings with the team and client during cost planning — rather than as the primary estimating engine. Its value is in the quality and speed of PDF-based measurement and its real-time collaboration features.
| 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 |
None of the four products above is an end-to-end estimating and project management system. They produce the cost plan and BoQ, but passing that data into a project management system (to track costs against the estimate during delivery), into an accounting system (to manage variations and final accounts), or into a client-facing commercial dashboard requires either manual re-entry or a custom integration.
For contractors who need their estimating outputs to feed directly into job costing in Procore, Xero, or a bespoke commercial management system, the integration work is typically custom regardless of which estimating tool is used. The data formats differ between tools, and none of the four products listed above was designed with clean API exports as a primary feature.