BIM maturity levels: which ones exist, and how to place your firm

“BIM maturity levels”, “BIM levels”, “Level 2 BIM”: these phrases come up constantly in searches, and yet they don't mean the same thing. The first refers to an ongoing assessment of a firm's practices; the second to a historical classification, closer to a technical milestone than a score. Confusing the two leads to shaky answers — “we're Level 2” says nothing about a firm's real maturity, and “we're at 60% maturity” says nothing about the type of collaboration in place. Here's how to untangle these scales, and how to actually place your firm.

BIM levels and maturity levels: two scales, two uses

The “BIM levels” (BIM Level 0 to 3) are a classification that emerged in the UK in the early 2010s, popularised by the so-called Bew-Richards wedge. It describes the degree of digital collaboration reached on a project, from no digital collaboration at all (Level 0) to a single, fully integrated model shared in real time (Level 3, still largely theoretical today). It is a technical, binary scale: a practice is either in place, or it isn't.

“BIM maturity levels”, on the other hand, measure something else: the consistency and solidity of a firm's processes over time, regardless of the tool used. A firm can perfectly well work with “Level 2” tools — separate discipline models, a common data environment — and still be immature, if every project reinvents its own rules. That is exactly the gap we described in our article on BIM maturity and tools.

The historical classification: BIM Level 0 to 3

Before looking at maturity, it helps to know what these four levels actually cover, since that's often the first question asked on the topic.

• Level 0 — No structured digital collaboration: paper drawings or basic 2D CAD, exchanges by email with no shared convention
• Level 1 — Managed CAD, in 2D or 3D, with a shared storage space, but no model shared between disciplines: everyone works in their own file
• Level 2 — Collaborative working: each discipline produces its own model, but these models are federated and exchanged through a common data environment (CDE), following shared conventions. This is the level that ISO 19650 formalises and structures
• Level 3 — A single model, fully integrated and shared in real time between all parties (often called “iBIM”). This level remains largely aspirational today, for lack of tools and a contractual framework mature enough

One point deserves clarifying since it comes up often: “Level 2 BIM” does not mean a firm uses a particular piece of software. It means it produces separate discipline models, federated through a common data environment, following shared rules — exactly what ISO 19650 describes.

Why this classification is no longer enough for a firm

The problem with the Level 0 to 3 breakdown is that it measures only one thing: the technical sophistication of a workflow. It says nothing about how consistently a firm applies its own rules, how skills are distributed across the team, or how traceable its decisions are. Two firms can both claim “Level 2” — one with a rigorously maintained common data environment and clear roles on every project, the other with a CDE set up once and then abandoned, each project manager applying their own conventions. On paper, the same level. In practice, two very different organisations.

This is exactly the gap that the maturity approach fills: rather than photographing a fixed technical milestone, it measures the consistency of practices over time, theme by theme.

The 4 BIM maturity levels

BIMaturity's BIM maturity diagnostic distinguishes four levels, on a continuous scale from 0 to 100, calculated from an assessment of practices spread across 11 themes of the ISO 19650 standard (common data environment, information requirements, roles, coordination, information security, training…):

• Initial (0 to 24/100) — No formalised BIM approach: practices depend on individuals, not on the organisation. If the person who “knows” leaves, the know-how leaves with them
• Emerging (25 to 49/100) — Some foundations exist (a CDE has been set up, a few written conventions), but they remain inconsistent from one project to the next, applied at the discretion of the project manager
• Structured (50 to 74/100) — BIM processes are formalised and applied on most projects, with identified roles and real traceability of decisions
• Mastered (75 to 100/100) — A mature BIM approach, tracked and continuously improved, aligned with the spirit of ISO 19650; processes no longer depend on a single person

This scale deliberately echoes the spirit of broader maturity models used in quality management (such as CMMI in software engineering): it does not judge an individual, it photographs an organisation at a given moment, on a continuous scale rather than a binary one.

Level 2 BIM says what a firm produces. A maturity level says how it produces it — and whether it will keep producing it the same way next year.

How to actually know where your firm stands

The only reliable way to place your firm is to audit real practices, theme by theme, rather than guessing an overall level by instinct. A serious diagnostic asks concrete questions — is a structured common data environment used on every project? are workflow statuses applied consistently? — on a four-level scale from non-existent to mastered for each practice.

The score obtained matters less than its breakdown: a firm that is “Emerging” on average may already be “Structured” on information security and “Initial” on document management. It is this unevenness, invisible in a single number, that should guide priorities.