CAD to BIM Conversion Services UK
CAD to BIM Conversion Services for UK Projects
We convert 2D CAD drawings, PDFs and legacy design information into structured BIM models for architectural, structural and MEP project workflows.
CAD to BIM conversion can support design development, multidisciplinary coordination, documentation and the transition from drawing-based information into a managed BIM environment.
Discuss Your CAD to BIM Project
Send us your CAD drawings, PDFs, available reference information and required model scope and we can review the appropriate BIM deliverables.
What Is CAD to BIM Conversion?
Turning 2D Project Information into Structured BIM Models
CAD to BIM conversion is the process of using existing 2D CAD drawings, PDFs and related project information as source material for developing structured 3D BIM models. The resulting model can support design development, coordination, drawing production and controlled digital information exchange across the project team.
CAD & PDF Inputs
Models can be developed from available drawings and supporting design information.
Revit BIM Development
Legacy drawing information translated into structured BIM geometry and project data.
Multidisciplinary Scope
Architectural, structural and MEP conversion can be included depending on available source information.
Defined Information Need
Model content aligned with the intended project use rather than unnecessary detail by default.
CAD to BIM Disciplines
Conversion Across Architecture, Structure and MEP
CAD to BIM scope can focus on one discipline or combine multiple model packages depending on the drawings supplied.
01 / Architecture
Architectural CAD to BIM
Floor plans, elevations and sections developed into structured architectural BIM models.
Architectural BIM →02 / Structure
Structural CAD to BIM
Structural plans, sections, details and schedules used to develop coordinated structural BIM geometry.
Structural BIM →03 / Building Services
MEP CAD to BIM
Mechanical, electrical and plumbing/public health drawings converted into coordinated building-services BIM models where information permits.
MEP BIM →Conversion Capabilities
What Our CAD to BIM Services Include
Deliverables can be configured around the project stage, source information and intended use of the BIM model.
01
2D CAD to 3D BIM
Drawing-based project information converted into structured three-dimensional BIM geometry.
02
PDF to BIM Modeling
PDF plans, elevations and sections used as source information when editable CAD files are unavailable.
03
Revit Model Creation
BIM models developed in Autodesk Revit for agreed design, coordination and documentation workflows.
3D BIM Modeling →04
Legacy Drawing Modernisation
Older drawing sets converted into structured BIM information where the supplied source material is usable.
05
Coordination-Ready Models
Discipline models prepared for federated review and multidisciplinary coordination where required.
Clash Detection →06
Model-Based Documentation
Plans, sections, elevations and schedules can be produced from the BIM model where included in scope.
From Drawings to BIM
Move Legacy Project Information into a BIM Workflow
Many projects begin with valuable information stored in DWG files, PDFs and historical drawing sets rather than coordinated BIM models.
CAD to BIM conversion reorganises that information into a model environment that can be reviewed, coordinated and updated more effectively as the project develops.
Source Information
The Quality of the BIM Model Starts with the Drawings
CAD to BIM conversion interprets the supplied design information. Missing, conflicting or outdated drawings should therefore be identified before model development.
Drawing Completeness
Plans, elevations and sections should provide enough information to understand the intended geometry.
Drawing Consistency
Conflicting dimensions, levels or layouts may require clarification before they are represented in BIM.
Model Assumptions
Any assumptions required because of incomplete source information should be agreed and documented.
Existing Conditions
Historic CAD drawings do not automatically confirm the current physical condition of an existing building.
Project Information
CAD to BIM Inputs and Deliverables
Scope should be agreed before production begins so the model contains the information needed for its intended use.
Typical Inputs
- DWG or DXF drawings
- PDF plans and details
- Architectural floor plans
- Structural plans and sections
- MEP layouts and schematics
- Schedules and specifications
- Project BIM requirements
Typical Deliverables
- Revit BIM models
- Architectural BIM models where in scope
- Structural BIM models where in scope
- MEP BIM models where in scope
- IFC exchanges where required
- Model-based drawings where included
- Coordinated revisions where required
Conversion Workflow
How We Convert CAD Information into BIM
01
Review Drawings
Review CAD, PDFs, schedules and available supporting information.
02
Define BIM Scope
Confirm disciplines, model use, information need and required outputs.
03
Develop Model
Build structured BIM geometry from the supplied drawing information.
04
Review & Coordinate
Check model content and multidisciplinary interfaces where required.
05
Issue Deliverables
Deliver approved BIM files and documentation in agreed formats.
CAD to BIM Is Not the Same as Surveying Existing Conditions
A CAD to BIM model represents the information contained in the supplied drawings and supporting documents. It should not automatically be treated as a verified record of current site conditions. Where existing-building accuracy is critical, current measured survey or point cloud information may be required and a Scan to BIM workflow may be more appropriate.
Digital Workflow
CAD to BIM Tools and Exchange Formats
Conversion workflows can combine drawing-based source information, BIM authoring and open model exchange.
The deliverable format should be selected around the requirements of the project team and intended downstream use.
AutoCAD / DWG
Existing CAD information used as source geometry and reference material for BIM development.
PDF Drawings
Plans, elevations, sections and details used when editable CAD source files are unavailable.
Autodesk Revit
BIM authoring for architectural, structural and building-services model development.
IFC
Open BIM exchange where required for interoperability across project platforms.
Federated BIM Review
Discipline models can be combined for spatial coordination and interface review where required.
Defined Model Scope
Geometry, information content and outputs agreed around the intended project use.
UK BIM Requirements
BIM Conversion Structured Around Information Need
CAD to BIM conversion should create the model content required for the project’s intended use rather than adding detail without a defined purpose.
Delivery can align with ISO 19650 information-management principles, agreed BIM Execution Plans and relevant project information requirements.
Scope Can Be Defined Around
- Project stage and intended model use
- Level of Information Need
- Available source drawings
- Discipline responsibilities
- Required model coordination
- File naming and revision controls
- Exchange and documentation outputs
Project Evidence
See BIM Delivery in Practice
Review project examples showing how structured BIM information has supported real coordination and construction requirements.
Common Questions
CAD to BIM Conversion FAQs
What files can be used for CAD to BIM conversion?
Typical source information includes DWG files, DXF files, PDF drawings, plans, elevations, sections, schedules and other available project documentation.
Can 2D CAD drawings be converted into Revit models?
Yes. Suitable 2D CAD drawings can be used as reference information for developing structured Revit BIM models.
Can architectural, structural and MEP drawings all be converted?
Yes. Conversion can cover architectural, structural and MEP disciplines where sufficient source information is available and included in the agreed scope.
Can PDFs be converted to BIM if CAD files are unavailable?
Yes. PDF drawings can be used as source information, although the amount of interpretation required may be greater than when clean, editable CAD files are available.
Is CAD to BIM suitable for refurbishment projects?
It can be, especially where reliable legacy drawings are available. If current physical conditions need to be verified, survey or point cloud information may also be required.
What is the difference between CAD to BIM and Scan to BIM?
CAD to BIM primarily uses drawings and documentation as source information. Scan to BIM uses measured survey or point cloud data representing existing physical conditions.
Start Your CAD to BIM Project
Have CAD Drawings That Need Converting to BIM?
Send us your DWG files, PDFs, supporting project information and required outputs and we can review the appropriate CAD to BIM conversion scope.
Request a BIM Quote