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Service Overview
Accurate as-built information gives project teams a reliable understanding of what actually exists on site—not simply what was originally designed. Desapex provides as-built modeling services that transform verified site information into coordinated 3D BIM models and 2D documentation for renovation, retrofit, expansion, construction handover, facility management and digital twin initiatives.
We develop architectural, structural and MEPF as-built models using available project records such as 3D laser scans, registered point clouds, redline drawings, site surveys, existing CAD/BIM files, photographs and verified field information. The required Level of Development and information content are defined around the intended use of the model, helping avoid both under-modeling and unnecessary detail.
Our workflow goes beyond recreating geometry. The model is checked against the available source data, structured for multidisciplinary use and prepared for downstream design coordination, asset management or integration into a broader digital ecosystem.
What are As-Built Modeling Services?
As-built modeling services create an accurate digital representation of a building, facility or infrastructure asset as it physically exists. Unlike design models that show intended conditions, an as-built BIM model records actual geometry, installed systems and verified site changes using information such as laser scans, point clouds, field surveys, redlines and existing drawings.
As-built models are used for renovation, retrofit, expansion, clash coordination, construction handover, facility management and digital twin development, giving stakeholders a trusted digital reference for future decisions.
Our Digital-First Approach
Define the Information Requirement
We begin by understanding how the as-built model will be used—renovation, retrofit, coordination, handover, FM or digital twin—and define the required disciplines, accuracy, LOD/LOI and deliverable formats accordingly.
Capture & Consolidate Existing Conditions
We consolidate reliable project information from laser scans, point clouds, site surveys, redline drawings, photographs and available CAD/BIM documentation to establish a verified existing-condition dataset.
Develop the As-Built BIM Model
Our BIM specialists convert the verified information into coordinated architectural, structural and MEPF models, representing actual spatial relationships, routing, dimensions and visible installed conditions.
Validate Model Accuracy
The developed BIM model is checked against the point cloud and other approved reference data through model reviews, overlay checks and defined QA/QC procedures to identify discrepancies before delivery.
Deliver & Integrate
Final models, drawings and asset information are structured for practical downstream use—whether for design coordination, a project CDE, renovation planning, facility management systems or future digital twin development.
Core Deliverables
Architectural As-Built BIM Models — walls, floors, ceilings, doors, windows, façades, rooms and other visible architectural elements.
Structural As-Built Models — columns, beams, slabs, structural walls, framing and other captured structural components.
MEPF As-Built Models — HVAC, plumbing, fire protection, electrical services, cable trays, equipment and associated visible systems.
As-Built 2D Drawings — coordinated floor plans, elevations, sections, reflected ceiling information and discipline drawings extracted from the model.
Point Cloud & Existing-Condition Data — registered scan information and supporting spatial records where included within the survey scope.
Model Validation / Deviation Outputs — model-to-scan verification and project-specific discrepancy information where required.
Schedules & Asset Information — room, equipment or asset schedules configured to project information requirements.
FM / Digital Twin-Ready Data — structured BIM information, including COBie or agreed asset datasets where required for handover and operations.
Why Choose Desapex
Digital-first engineering, not basic drafting.
We treat the as-built model as an engineering information asset rather than simply reproducing drawings in 3D.
Modeling aligned to the intended use.
LOD, disciplines and information requirements are defined around renovation, retrofit, coordination, FM or digital twin objectives instead of applying unnecessary detail everywhere.
Reality-based validation.
Where scan data is available, model geometry is checked against the point cloud so teams can work from verified existing conditions instead of assumptions.
Multidisciplinary capability.
Our experience spans architecture, structure, MEPF, process facilities, industrial assets, data centers, retail environments and complex infrastructure.
Lifecycle-ready information.
Models can progress beyond project documentation into structured information for asset management, maintenance and digital twin workflows.
Structured digital delivery.
Desapex operates with lifecycle-focused BIM and information-management processes and integrates design, construction and operational information into coordinated digital workflows.
Unique Selling Proposition
Desapex does more than model what is visible we transform verified existing-condition data into structured digital information that can continue creating value after the survey is complete.
By combining reality capture, BIM modeling, engineering validation and lifecycle information management, we deliver as-built models that can support today’s renovation or coordination decision and tomorrow’s facility management or digital twin strategy.
Verified today. Ready for what comes next.
As-built BIM models engineered for renovation, coordination, operations and the complete asset lifecycle.
Frequently Asked Questions
What is as-built modeling?
As-built modeling is the process of creating a 3D BIM model that represents the actual constructed or existing condition of an asset. It records the geometry, location and arrangement of building elements and installed systems based on verified field information rather than relying only on original design documentation.
What is the difference between As-Built Modeling and Scan to BIM?
What information can be used to create an as-built BIM model?
What Level of Development can an as-built model be delivered to?
How does Desapex verify the accuracy of an as-built model?
Can as-built BIM models be used for facility management and digital twins?
