Integrated Digital Delivery: Progressive Updating of As-Built Conditions in BIM for Enhanced Record Keeping and Facility Management

The integration of As-Built, Record, and Facility Management (FM) data into Building Information Modeling (BIM) workflows represents a significant advancement in the management and maintenance of built assets. This process ensures that the BIM model reflects the true constructed state of the building, serving as a comprehensive digital twin that aids in efficient facility management post-construction. The progression of updating as-built conditions in the BIM model during the contract duration involves systematic steps, collaboration among various stakeholders, and the use of advanced technology (i.e. LIDAR or Photogrammetry) to capture and integrate data accurately. We examine strategies for contractors to systematically update as-built conditions in BIM over the course of a construction contract, leading up to the project's handover for facility management.

Step 1: Initial Data Collection and BIM Model Creation

The process begins with the creation of a BIM model based on the initial design documents and specifications. This model serves as the foundation for all future updates and modifications. During this phase, the model is populated with detailed design information, including geometrical, material, and scheduling data.

Step 2: Incorporating Changes During Construction

As construction progresses, deviations from the initial design are inevitable due to various factors such as site conditions, design modifications, or material substitutions. These changes are documented meticulously by the construction team, including contractors, subcontractors, and site engineers.

  1. Real-Time Data Capture: Advanced technologies like laser scanning, photogrammetry, and drones are used to capture the as-built conditions of the construction site. This data is then compared with the initial BIM model to identify discrepancies.
  2. Model Updating: The BIM model is updated to reflect the captured as-built conditions. This involves adjusting the geometrical representations, materials, and any other relevant data to ensure the model accurately represents the constructed facility.

Step 3: Validation and Verification

After updating the BIM model, a validation process is undertaken to ensure the accuracy and completeness of the as-built data.

  1. Stakeholder Review: Key project stakeholders, including the project manager, architects, engineers, and facility managers, review the updated BIM model. This collaborative review process ensures that the as-built model accurately reflects the physical construction.
  2. Verification Against Physical Construction: In some cases, additional site visits or the use of reality capture technologies may be required to verify the accuracy of the BIM model against the physical construction.

Step 4: Integration into Facility Management (FM) Systems

Once verified, the as-built BIM model is integrated into Facility Management (FM) systems. This integration is crucial for the efficient operation and maintenance of the facility post-construction.

  1. Asset Tagging and Management: Assets and equipment within the BIM model are tagged and linked to FM systems, allowing for efficient asset tracking, maintenance scheduling, and lifecycle management.
  2. Space Management: The as-built BIM model aids in space management and optimization, providing facility managers with detailed spatial information to support decision-making.

Step 5: Continuous Updating and Maintenance

The as-built BIM model is not static; it requires continuous updates to reflect any changes or renovations to the facility. This ongoing maintenance ensures that the BIM model remains a relevant and accurate digital twin of the physical building.

  1. Documentation of Changes: Any modifications or maintenance activities conducted on the facility are documented and reflected in the BIM model.
  2. Periodic Reviews: Regular reviews of the BIM model by facility managers and maintenance teams ensure that it continues to accurately represent the as-built conditions.


The process of updating as-built conditions in As-Built, Record, and FM BIM models is a dynamic and collaborative effort that extends throughout the construction phase and into the operational life of the facility. By ensuring that the BIM model accurately reflects the as-built conditions, stakeholders can leverage this digital asset for efficient facility management, ultimately enhancing the longevity and performance of the building. This integrated approach not only streamlines facility management processes but also contributes to a more sustainable and responsive built environment.