Quantity Estimation

BOQ Generation

All the modes that we build at Techture are made in line with actual construction practices and therefore are capable of being used to generate highly accurate Bill of Quantities (BOQs) in customizable formats leveraging the information embedded in each component of the model.

Accuracy and Flexibility

The Quantity Estimation by Techture is free of human errors which come in during manual calculations because they are auto-generated from the model. Customized takeoffs through the model including pour wise quantities, floor wise finishes etc. can be done which greatly enhance conventional activities like procurement and cost reconciliation.


The BIM models developed by Techture consist of all the disciplines and therefore are able to generate quantities of all the Architectural, Structural and MEP components. Progressive changes in quantities and relevant costs due to client decisions are updated dynamically in budget sheets which always remain in sync with the model.


BIM can be used for generation of accurate and reliable quantity take-offs and cost estimates throughout the lifecycle of the project.

While tasks related to the designing and planning of a building are focused on by the Architect, tasks such as quantity and cost estimation are generally sidelined and left to the estimator. However, using simply hand-drawn designs or even 2D CAD for that matter may not generate the best possible results. Models obtained through BIM eliminate the potential inaccuracies and human errors, as well as make sure that the information is always consistent with the design.

Quantity estimation through BIM helps the different stakeholders to see the cost implications of the changes they are proposing, at all the phases of construction process, thus keeping budget overruns due to project modifications under check.

The time saved in estimation is instead put to use to focus on higher value project-specific factors – identifying construction assemblies, generating pricing, factoring risks and so on – which are essential for high quality estimates.

Quantity Estimation Sheet

In the traditional design process, plans and specifications created by the design teams did not impact the estimates created by the Quantity Estimation teams because the information relevant to an estimate was just an overlay and not linked to the graphical representation. The surveyors would simply extract information from the documents passed on by the design team which would best suit their estimation requirements. But, in such a workflow, whenever there are any changes, it is impossible to keep track the differences between the drawings and estimates. Not to mention the inaccuracies in such a manual way of calculation.

However, in BIM the point of gathering and managing information begins right from the design model phase. The development of a 3D model is accompanied with the graphical representation of data-rich objects, the data being the product of the simultaneous Quantity Estimation. Each of these inserted objects are available in the future for the purpose of extracting relevant information by different project stakeholders. The nature of BIM compels us to manage information through all phases of a project.

Another key advantages of BIM is modelling of all disciplines in a single framework. Comprehensive Quantity Schedules of all the components like Ducts, Pipes and Fittings, Accessories, Equipment, Cable Trays, Hangers, etc. can be attained which dynamically update with changes in the Model.

As a result, we invest considerable amount of time in developing our model to best suit the Employer’s Information Requirements (EIR) and ensure that the level of detail is as per the BIM Execution Plan (BEP). This allows us to deliver high quality outputs and accurate estimates.


  • Precise quantification of modeled elements.
  • Swift generation of quantities aid in better decision-making.
  • Better visual representation of the project and the construction elements to be estimated.
  • Helps keep track of budget throughout the construction process.
  • Helps to explore different design options and concepts within the owner’s budget.


The process of Quantity Estimation has long been a manual method. Even the reliance on the manual method for minimizing the errors has been prevailing for long. Until, BIM arrived in the picture, which made the whole estimation and procurement process heavily detailed and accurate.

Another advantage to the BIM aided process is the dynamic changes and verification it provides by simply linking the BIM model to excel sheet. Our BIM App Development team has been consistently working on innovation in various deliverables generated through the BIM model, the quantity Estimation sheets being one.

Our add-in to Autodesk Revit (namely Export2Excel) has opened new avenues in ways which exports an Excel sheet off the BIM model for the quantities of the components present in it. Also, once exported, the Excel sheet is then linked to the BIM model, enabling its updating process dynamically with respect to the changes made in the model, reducing reworks and errors significantly.