ISO 19650 Explained: The Complete Guide to BIM Information Management

If you work in BIM - or aspire to - ISO 19650 is unavoidable. It’s the international standard that governs how information is managed on construction projects that use BIM. UK public sector projects require it. Many large private developers expect it. And as BIM becomes the global norm, more markets are adopting it every year.

But ISO 19650 is also one of the most misunderstood standards in the AEC industry. People treat it as a checklist, a compliance requirement, or worse - as pure bureaucracy. It’s none of those things. Understood correctly, it’s a framework for making information work for your project rather than against it.

This guide explains what ISO 19650 is, what each part covers, and - most importantly - how it actually applies on a real project.

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What is ISO 19650?

ISO 19650 is a series of international standards published by ISO (International Organization for Standardization) that defines how information should be managed on construction and infrastructure projects that use Building Information Modelling.

It replaced the UK’s earlier BIM standards (BS 1192 and PAS 1192) and brought them into an international framework. The UK was the lead author of most parts, which is why ISO 19650 reflects a lot of the UK’s mature BIM practice - but it’s now adopted (with national annexes) across Europe, the Middle East, Asia-Pacific, and beyond.

Key distinction: ISO 19650 is not a software standard. It doesn’t tell you to use Revit, or Navisworks, or any specific tool. It defines processes and requirements for information management - what information needs to be created, by whom, in what form, and when.

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The ISO 19650 Series - What Each Part Covers

The standard is published in five parts, each addressing a different aspect of information management.

ISO 19650-1: Concepts and Principles

This is the foundational document. It introduces the core terminology and conceptual framework for the entire series:

• The Information Model - the structured collection of all project information (Graphical Information Model + Non-Graphical Information + Documentation)
• The Common Data Environment (CDE) - the single source of truth for all project information, with defined workflow states
• Level of Information Need - the concept that replaces “Level of Detail” (LOD) - defining what information is needed, not just how detailed the geometry is
• Information Requirements - how clients and employers specify what they need (OIR, AIR, PIR, EIR)
• Appointing and Appointed Parties - the contractual relationships that govern who is responsible for what information

If you only read one part of ISO 19650, read Part 1. Everything else builds on it.

ISO 19650-2: Delivery Phase of Assets

Part 2 covers how information is managed during the design and construction of a new asset (building, infrastructure, etc.). This is the most widely referenced part in the AEC industry.

It defines the process for:

• How the Appointing Party (client/employer) sets out their information requirements
• How the Lead Appointed Party (main contractor or lead designer) responds with a BIM Execution Plan (BEP)
• How information is delivered in structured stages (mapped to project milestones)
• The pre-appointment and post-appointment information requirements
• How models and information are checked, reviewed, approved, and shared at each stage
• The Master Information Delivery Plan (MIDP) and Task Information Delivery Plans (TIDPs)

ISO 19650-3: Operational Phase of Assets

Part 3 extends the framework into the operation and maintenance phase - what happens after the building is handed over.

This covers:

• How asset information (the as-built model, maintenance data, O&M documentation) is structured for facilities management
• Triggering events that generate information requirements during operation (planned maintenance, incidents, capital works)
• How the information model is maintained over the building lifecycle

Part 3 is essential for clients who want to use BIM for facilities management, but is less commonly implemented than Part 2 in current practice.

ISO 19650-4: Information Exchange

Part 4 addresses how information is exchanged between parties - the technical requirements for file formats, information containers, and data exchange. It’s more technical than the other parts and is primarily relevant to BIM Managers and information managers dealing with data exchange protocols.

ISO 19650-5: Security-Minded Approach

Part 5 covers security requirements for projects where the sensitivity of the information requires protection. Think government buildings, critical national infrastructure, defence assets - projects where the model data itself could be a security risk.

For most commercial architecture projects, Part 5 is background knowledge. For public sector BIM work on sensitive assets, it’s mandatory.

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Core Concepts You Need to Understand

The Common Data Environment (CDE)

The CDE is not a specific piece of software. It’s a managed workflow for how information moves through defined states:

• Work in Progress (WIP) - information being created, not yet shared
• Shared - information shared with the project team for coordination and review
• Published - approved information, issued as an official deliverable
• Archived - superseded information retained for record

The key point is that information only moves forward through these states via defined review and approval processes. A CDE platform (Autodesk Construction Cloud, BIMcollab, Trimble Connect, etc.) automates and audits these movements. But you can technically implement a CDE on a well-managed SharePoint or even a structured file server - the platform matters less than the process.

Information Requirements - The Four Tiers

ISO 19650 defines information requirements at four levels:

Acronym	Full Name	Who sets it	What it covers
OIR	Organisational Information Requirements	Asset owner/client org	What information the organisation needs to manage its portfolio
AIR	Asset Information Requirements	Appointing party (client)	What information is needed to manage this specific asset over its life
PIR	Project Information Requirements	Appointing party	What information is needed to deliver this specific project
EIR	Employer’s Information Requirements	Appointing party	The contractual document issued to the supply chain specifying BIM deliverables

In practice, most project teams encounter the EIR - it’s the document the client gives you that says “this project requires BIM to ISO 19650, and here’s what we need.” The other tiers are upstream of that.

The BIM Execution Plan (BEP)

The BEP is the appointed party’s response to the EIR. It’s the project’s constitution for BIM - it documents:

• How the team will deliver the information requirements
• Who is responsible for which information deliverables
• When information will be delivered (the MIDP/TIDP)
• What software, formats, naming conventions, and coordinate systems will be used
• Where information will be stored and shared (the CDE)

There are two BEPs:

1. Pre-appointment BEP - submitted as part of a tender/bid, before the contract is awarded. Shows how your team would deliver BIM if appointed.
2. Post-appointment BEP - the live document, updated throughout the project, that governs how BIM is actually being delivered.

Writing a good BEP is one of the most underrated skills in the BIM industry. A bad BEP (vague, generic, copy-pasted from a template) causes confusion and disputes throughout the project.

Level of Information Need (LOIN)

One of the most significant conceptual changes in ISO 19650 compared to older standards is the shift from Level of Detail (LOD) to Level of Information Need (LOIN).

LOIN has three dimensions:

• Geometrical information - the shape and position of objects in the model
• Alphanumerical information - the data attributes (properties) attached to objects
• Documentation - the associated documents (specifications, certificates, etc.)

Why does this matter? Because “we need a LOD 300 model” tells you about geometry but says nothing about the data you need. A door at LOD 300 might look correct in 3D but have none of the fire rating, hardware specification, or door schedule data that the FM team needs. LOIN forces you to be explicit about all three dimensions of information, not just the 3D geometry.

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How ISO 19650 Works on a Real Project

Here’s the typical flow on a project following ISO 19650-2:

1. Client publishes EIR The client (Appointing Party) publishes their Employer’s Information Requirements, setting out what they need and when.

2. Tenderers submit Pre-Appointment BEP Design teams and contractors responding to a tender submit a pre-appointment BEP showing how they’d deliver the EIR. This is evaluated as part of the tender.

3. Contract awarded, Post-Appointment BEP developed The appointed team develops the full, detailed post-appointment BEP, including the MIDP and all TIDPs from subconsultants.

4. Project information delivered in stages At each project milestone (RIBA Stage Gate, planning, construction issue, etc.), information is checked against the BEP, reviewed and authorised, and published to the CDE.

5. Clash detection and coordination The federated model (all disciplines combined) is regularly checked for coordination issues. Findings are tracked through the CDE.

6. Handover - as-built model and asset information At practical completion, the project information model is verified against the AIR and handed over to the client’s FM team.

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Common Misunderstandings About ISO 19650

“ISO 19650 is just about the model” No - it’s about all information. The model is one part. The non-graphical data (parameters, specifications, schedules), the documentation (reports, certificates, minutes), and the administrative information (naming, status, metadata) are all equally part of the information model.

“You need expensive software to implement it” The standard is platform-agnostic. You can implement ISO 19650 processes with Autodesk Construction Cloud, with BIMcollab, or with a well-structured SharePoint. The process matters, not the platform.

“It’s only required for big projects” ISO 19650 is increasingly standard even on medium-sized commercial and residential projects, particularly for public sector clients and sophisticated private developers.

“Once you’ve written the BEP, you’re done” The BEP is a live document. It should be reviewed and updated at each project stage, and any significant change to the team, scope, or process should be reflected in an updated BEP.

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ISO 19650 and National Annexes

ISO 19650 is the international framework, but individual countries publish national annexes that adapt it to local legal and contractual contexts:

• UK: BS EN ISO 19650 with UK National Annex - the most detailed national implementation, including specific guidance on naming conventions, CDE requirements, and security (Part 5)
• Germany: DIN EN ISO 19650
• Australia: Natspec/AISC guidance aligned with ISO 19650
• UAE/Saudi Arabia: Mandated on government projects with Ministry of Works guidance

If you’re working in a specific market, check whether a national annex applies - it may add specific requirements on top of the base standard.

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Getting Certified in ISO 19650

For BIM professionals, ISO 19650 knowledge is increasingly a career requirement. The main certifications:

• BRE BIM Level 2 Certification (UK) - includes ISO 19650 assessment
• BSI Kitemark for BIM (UK) - organisational certification
• RICS BIM Manager Pathway - for quantity surveyors and project managers
• buildingSMART Professional Certification - international, covers openBIM and information management

For most BIM roles below senior level, demonstrating practical knowledge of ISO 19650 through project experience matters more than formal certification. Having written or contributed to a real BEP is worth more on a CV than a certificate alone.

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ISO 19650 is a serious standard with serious depth - but it’s learnable. If you want to build a career in BIM management or coordination, investing time to properly understand it will separate you from the majority of practitioners who’ve only skimmed the surface.

The Archgyan Academy covers ISO 19650 concepts as part of the BIM management curriculum - alongside practical Revit, coordination workflows, and everything else a modern BIM professional needs.