Chapter 1: The Origin of Maturity Levels
Before diving into level details, we must understand: why did these classifications emerge? The story of maturity levels starts in the UK in the early 2000s.
1.1 British Historical Context
In 2008, the British Government (via Department of Business & Innovation) began searching for a way to "measure" industry progress in BIM adoption. The problem: how do you measure something as complex as "digital maturity"?
In 2011, Mark Bew and Mervyn Richards published the famous "Bew-Richards Maturity Levels" framework. This framework divided BIM evolution into four levels: 0, 1, 2, 3. It became the basis for UK's BS 1192.
1.2 Political Driver: BIM Mandate
In 2011, the British Government mandated "Level 2 BIM" for all public projects by 2016. This historic decision transformed BIM from "optional technology" to "legal requirement" in public projects. It was the world's first government mandate.
1.3 Global Spread
After British success, other countries adopted the same classification:
- Singapore: First Asian country to mandate BIM (2013 for large buildings)
- Norway: Mandated Level 3 for government projects (2010)
- UAE: Dubai Municipality mandated BIM 2015
Chapter 2: Level 0 â 2D CAD Drawing
This is "pre-BIM level." If you're here, you're not using BIM at all.
2.1 Technical Characteristics
Output: 2D DWG or DXF files. Collaboration: via paper prints and email. No central coordination. Each team (architectural, structural, electrical) works in isolation. Result: clashes discovered on-site.
2.2 Why Does Level 0 Still Exist?
Despite seeming outdated, many small projects and consulting firms remain at Level 0 because:
- Cost of transitioning to BIM (software, training, hardware)
- Very small projects don't justify the investment
- Client unawareness of BIM importance
Chapter 3: Level 1 â Isolated Modeling
Level 1 is the "first step toward BIM" but in a limited way. Here we start using 3D models, but collaboration is still weak.
3.1 Basic Characteristics
3D models are created for design, but these models aren't fully "intelligent." Each discipline creates its model separately. For example, architect works in Revit, structural in Tekla, electrical in AutoCAD MEP. No direct integration between these models.
2D drawings are "extracted" from 3D models. Collaboration happens via "file exchange" (File-Based Collaboration) - usually DWG or PDF.
3.2 Difference Between Level 0 and Level 1
In Level 0, we draw lines. In Level 1, we build 3D models then extract drawings from them. It's a qualitative shift in thinking, but the core difference (collaboration and intelligent data) is still missing.
Chapter 4: Level 2 â Managed Collaboration
This is the "target level" mandated by UK in 2016. Level 2 is "real BIM" for many.
4.1 Official Definition from BS 1192
Level 2 requires:
- Intelligent 3D Models for each discipline
- Data exchange via open formats like IFC or COBie
- Common Data Environment (CDE) for managing file exchange
- Using BS 1192 protocols for naming and version management
4.2 What Changed from Level 1?
In Level 1, each team works separately. In Level 2, there's "Managed Collaboration." Models are still separate (Federated Models), but they're combined periodically for clash detection.
The real difference is in "process" not just technology. Level 2 requires:
- EIR (Employer's Information Requirements)
- BEP (BIM Execution Plan)
- Periodic coordination meetings
- Documented Clash Register
Chapter 5: Level 3 â Full Integration (Single Model)
Level 3 is the "ultimate goal" - but it's still more aspiration than reality in most cases. In Level 3, there are no "separate models" but one integrated model everyone works on simultaneously.
5.1 Theoretical Vision
Imagine architect, structural, and electrical engineers all working on the **same file** at the same moment. Any change one makes appears instantly to others. No "export/import," but "Real-Time Sync."
5.2 Technical Obstacles
Why haven't we reached Level 3 yet?
- Current software (Revit, ArchiCAD, Tekla) wasn't designed for instant collaboration, but for separate models
- Intellectual Property (IP): How does a designer protect their rights if everyone works on the same file?
- Infrastructure: Requires very fast internet and powerful cloud
5.3 Experimental Level 3 Projects
Some major projects have attempted Level 3:
- Crossrail (UK): Used Bentley ProjectWise as integration platform
- NEOM (Saudi Arabia): Plans to use real-time Digital Twin
Chapter 6: Other Global Frameworks
The UK isn't alone in developing a BIM maturity measurement framework. Other countries created their own models.
6.1 United States: NBIMS-US
The US has National BIM Standard (NBIMS) focusing on "Minimum Information Requirements" (MIR) instead of "Levels." The American approach is less "classificatory" and more "practical" - focusing on required deliverables rather than technical level.
6.2 Australia: National BIM Guidelines
Australia uses "BIM Uses" concept - classifying BIM use cases (like Clash Detection, 4D Simulation, Energy Analysis) instead of linear levels.
6.3 Singapore: Singapore BIM Guide
Singapore adopted British levels but with local customizations. Notable in Singapore is the "e-Submission" system for uploading BIM models directly to government agencies for electronic approval.
Chapter 7: ISO 19650 and Post-Levels Evolution
In 2018, ISO 19650 was released as a unified international standard. This standard "moved beyond" the levels concept.
7.1 Why Did ISO 19650 Abandon Levels?
ISO 19650 focuses on "Outcomes" not "Technical Levels." Instead of saying "I'm at Level 2," ISO 19650 asks: "What is your information, when do you need it, and who receives it?"
This approach is more flexible and suits all markets. It doesn't mandate specific technology, but mandates a clear "information management process."
7.2 Relationship Between Levels and ISO 19650
You can say:
- Level 2 (UK) â ISO 19650 when professionally implemented
- Level 3 (UK) = Ambitious vision needing future standard development
Chapter 8: How to Assess Your Organization's Maturity?
If you want to know "where are we on the ladder?" here's a practical self-assessment framework.
8.1 Basic Assessment Criteria
| Dimension | Level 0 | Level 1 | Level 2 | Level 3 |
|---|---|---|---|---|
| Tools | AutoCAD 2D | Revit (isolated) | Revit + Navisworks + CDE | Unified cloud platform |
| Collaboration | Email + paper | DWG exchange | IFC + managed CDE | Single real-time model |
| Processes | None | CAD Standards only | EIR + BEP + BS 1192 | ISO 19650 with Digital Twin |
Chapter 9: Transitioning Between Levels
How does your organization move from one level to another? It's not about "buying new software" but cultural and operational transformation.
9.1 From Level 0 to Level 1 (6-12 months)
- Purchase Revit or ArchiCAD licenses
- Train team (30-50 hours per person)
- Start with small pilot project
- Cost: ~$50k-$150k depending on firm size
9.2 From Level 1 to Level 2 (12-24 months)
- Hire BIM Manager
- Create BEP Template
- Choose CDE platform (BIM 360, Aconex, etc.)
- Advanced training on IFC, COBie, Clash Detection
- Cost: ~$200k-$500k
Chapter 10: The Future Beyond Level 3
If Level 3 is "Single Model," what comes after?
10.1 Digital Twins
Level 3+ transforms into "Twin" - a live digital copy of the building connected to sensors (IoT). If a pump temperature rises in reality, it appears red in the model.
10.2 AI-Driven BIM
AI will begin "designing" parts of the model automatically. For example, define requirements, and AI suggests 100 designs achieving best cost and energy efficiency.
10.3 Metaverse Construction
Imagine reviewing designs in VR with team from different countries. This isn't fantasy - some companies have already started.
Conclusion
Maturity levels aren't "certificates" to obtain, but a continuous journey. The goal isn't reaching Level 3, but using BIM to achieve real value in your projects.