Building Information Modelling (BIM) in Procurement

Building Information Modelling (BIM) has transformed how public infrastructure and buildings are designed, procured, and managed in Europe. Moving from paper drawings to intelligent, data-rich digital models changes the relationship between contracting authorities, designers, and contractors at every stage of a project. For public sector buyers and bidders alike, BIM is no longer an emerging technology: it is a procurement requirement embedded in tender documents across the UK and progressively across EU member states.

What is Building Information Modelling (BIM) in Procurement?

BIM is the process of creating and managing a shared digital model of a built asset, encompassing its geometry, spatial relationships, geographic information, and the properties of the components within it. The model is used during design, procurement, construction, and asset management.

In a procurement context, BIM requirements are typically expressed as a level of maturity. The UK government mandated BIM Level 2 for all centrally procured public projects from April 2016. BIM Level 2 requires the production and sharing of asset information in standardised formats (using ISO 19650 and its predecessors PAS 1192-2 and PAS 1192-3) by all project participants, enabling information exchange without requiring a single collaborative 3D environment.

ISO 19650, the international standard for organisation and digitalisation of information about buildings and civil engineering works (including BIM), provides the current framework used across the UK and adopted across many EU member states. It defines roles including the Appointing Party (the contracting authority), the Lead Appointed Party, and Appointed Parties, each with defined information management responsibilities.

The EU BIM Task Group, established by the European Commission, published a framework for how public clients across EU member states should adopt BIM in public procurement. While there is no single EU directive mandating BIM, the framework encourages member states to develop national mandates. Countries including France, Finland, the Netherlands, Denmark, and Norway have introduced BIM requirements for public works of significant value. Spain and Germany are progressing national strategies.

In procurement terms, a BIM requirement in a tender typically specifies: the ISO 19650 standard to be followed; the software formats for model exchange (IFC is the open standard); the content of the Employer's Information Requirements (EIR), which define what information the employer needs and when; and the required BIM execution plan (BEP) to be submitted by bidders.

CDM Regulations compliance is increasingly integrated with BIM workflows, as safety in design information can be embedded in the model and shared with the principal designer and contractor.

Why it matters for bidders

BIM capability has become a selection criterion in many major public works tenders. Contracting authorities require bidders to demonstrate that their team (including designers and subcontractors) can operate within the specified BIM environment, produce compliant outputs, and contribute to the Common Data Environment (CDE).

Bidders who cannot demonstrate BIM capability will be excluded from an increasing proportion of above-threshold works contracts. Conversely, bidders who invest in BIM processes gain advantages in coordination quality, clash detection, and programme certainty that translate into competitive and operational benefits.

Example

Transport for London procures a new overground station. The tender requires ISO 19650 Part 2 compliance, a CDE based on a specified platform, and the submission of a BIM Execution Plan within the tender response. The bill of quantities (BOQ) is linked to model elements, enabling quantity take-off directly from the model. At handover, the contractor delivers an Asset Information Model (AIM) for facilities management.

Frequently Asked Questions

Is BIM mandatory for all public construction in the UK?

UK central government mandates BIM Level 2 (ISO 19650) for centrally procured public works. Local authorities, NHS trusts, and devolved administrations set their own requirements, many of which align with or exceed the central government standard. Not all local authority contracts require BIM, particularly for smaller works.

What is the difference between BIM Level 1, Level 2, and Level 3?

Level 1 (now obsolete in practice) involved 2D CAD. Level 2 requires managed asset information produced collaboratively in standardised formats by all parties, shared via a CDE. Level 3 (sometimes called "iBIM" or "golden thread") involves a single shared model used by all parties simultaneously. Level 3 is still emerging as an industry norm.

How is BIM evaluated in a tender?

Typically, bidders are required to submit a BIM Execution Plan (BEP) demonstrating how they will meet the Employer's Information Requirements. The BEP is assessed against criteria covering software capability, data management processes, staff competence, and the proposed CDE. Some authorities also request evidence of previous BIM delivery on comparable projects.