Open BIM Cost Estimator
Automatic cost estimates

Results, checks and generated support documents

INDEX

• Results, checks and generated support documents
  • Execution cost of the project
  • Construction cost per m²
  • Budget by chapters
  • Support documents
• Details
• More information
  
  

Factors contemplated during price applications

Open BIM Cost Estimator has several ways to display the values of the evaluated magnitudes, so users can analyse the results in the most efficient way according to their needs.

Execution cost of the project

The cost determined by the program corresponds to the execution cost of the project, which includes the total amount of direct and indirect costs that are incurred for its execution, where:

• Direct costs
  Are the costs that are directly attributed to the execution of the project items, which include:
  
  
  • Materials
  
  
  • Machinery or equipment
  
  
  • Labour
  
  
  • Auxiliary measures or complementary direct costs, established as a percentage of the previous components (materials, machinery and labour).


• Indirect costs or project expenses
  They consist of the costs that are not directly attributable to project items, but to the whole project: office facilities on site, warehouses, workshops, laboratories, salaries of technical staff and the manager, amongst others.

The general expenses and the industrial benefit of the contractor that correspond to the contract budget or tender budget are excluded from the execution cost of the project, as well as taxes, licenses, technical fees and other expenses that are attributable to the developer are also excluded.

Construction cost per m²

It is defined as the result of dividing the total amount of the "Project execution budget" by the "Total built surface area (S)", expressed in square metres.

"Total built surface area (S)" is the area delimited by the perimeter lines of the external enclosures and, where applicable, the axes of the dividing walls. The program computes 100% of its floor area, overhanging elements, terraces and balconies covered by a roof when they are closed laterally by walls, otherwise, only 50% of its surface is computed.

The comparison of the total amount of the execution cost of the project between two buildings, can be established with an index or ratio, which, in the case of the program, is called "Construction cost per m²".

Budget by chapters

Open BIM Cost Estimator allows users to view the decomposition of the execution cost of the project by chapters for phases II (Draft project) and III (Design project). Furthermore, in phase III, users can view these chapters and their sub-chapters.

For each chapter or subchapter the amount, the cost per m² and its impact on the execution cost of the projectare indicated.

Support documents

Open BIM Cost Estimator generates a document justifying each of the preliminary phases of the project that are contemplated by the application. This document includes the project data that has been entered and the results of the calculation of the execution cost for the project.

The report can be printed directly from the application and exported to PDF, DOCX, TXT, HTML and RTF formats.

 

Details

• Program download, available languages...
  
  
• User license
  The permits that must be included in the user license to be able to use Open BIM Cost Estimator depend on the value of the execution cost that is calculated by the program:
  
  
  • Up to 1,000,000 €
    Users can use the program for free.
  • Up to 5,000,000 €
    The user license must include the Open BIM Cost Estimator Pro permit.
  • More that 5,000,000 €
    The user license must include the Open BIM Cost Estimator Expert permit.

 

More information

More information on Open BIM Cost Estimator can be found by clicking on the following links:

• General information


• Aim of the program


• Scope of application


• User interface


• Method used to calculate the cost of the building


• Factors contemplated during price applications (geographic, socioeconomic, typological, construction, climatic and seismic)


• Integration in the Open BIM workflow


• Results, checks and generated support documents