EN ISO 29481-1:2025

Building information models - Information delivery manual - Part 1: Methodology and format (ISO 29481-1:2025)

Publication date:   Jan 15, 2026

Scope

This document prescribes:
—     how to document a use case with an associated business context and exchange requirements;
—     a methodology to identify and specify the information exchanges required at identified times during the life cycle of assets.
This document presents the information delivery manual (IDM) in natural language terms to facilitate interoperability between software applications used during all phases of the life cycle of assets (both buildings and infrastructure). It promotes digital collaboration between actors within the identified business context and provides a basis for accurate, reliable, repeatable and high-quality information exchange.
The information delivery manual (IDM) methodology specified in this document can be applied to any information management trigger event to identify the details of the information required to be exchanged.