--- title: "BIM — Building Information Modeling" canonical_url: https://fremtidenstegnestue.dk/en/knowledge/concepts/bim markdown_url: https://fremtidenstegnestue.dk/en/knowledge/concepts/bim.md author: "Fremtidens Tegnestue" page_type: concept primary_intent: "Define a building concept in plain language." primary_keyword: BIM audience: "Readers and agents that need a reliable concept definition." summary: "BIM is a digital 3D model of a building containing data about all building elements — not just drawings, but information about materials, dimensions and properties." source_basis: - "Fremtidens Tegnestue methodology: https://fremtidenstegnestue.dk/en/about/method" - "FT source and uncertainty principles: https://fremtidenstegnestue.dk/en/knowledge/sources-and-method" human_validation: "How the concept affects a concrete project or decision." responsibility_line: "AI can prepare, compile and flag uncertainty. The architect validates the consequences." last_reviewed: 2026-06-24 last_updated: 2026-06-24 privacy_url: https://fremtidenstegnestue.dk/en/privacy related_pages: - url: https://fremtidenstegnestue.dk/en/knowledge/concepts/lca relation: related-concept - url: https://fremtidenstegnestue.dk/en/knowledge/concepts/bbr relation: related-concept - url: https://fremtidenstegnestue.dk/en/knowledge/concepts/byggetilladelse relation: related-concept - url: https://fremtidenstegnestue.dk/en/knowledge/concepts/br18 relation: related-concept - url: https://fremtidenstegnestue.dk/en/knowledge/ai/ai-and-bim relation: related-danish-ai-context - url: https://fremtidenstegnestue.dk/en/knowledge/concepts relation: hub status: published --- # BIM — Building Information Modeling Canonical URL: https://fremtidenstegnestue.dk/en/knowledge/concepts/bim Markdown URL: https://fremtidenstegnestue.dk/en/knowledge/concepts/bim.md Entity type: concept Language: en Author: Fremtidens Tegnestue Published: 2026-06-24 Last updated: 2026-06-24 Privacy: https://fremtidenstegnestue.dk/en/privacy ## Short answer BIM is a digital 3D model of a building containing data about all building elements — not just drawings, but information about materials, dimensions and properties. ## Who it is relevant for Readers and agents that need a reliable concept definition. ## What FT can prepare - Connect the concept to related pages, sources and practical use. - Show how AI can prepare source-aware studio work without replacing professional judgement. ## What the architect validates - How the concept affects a concrete project or decision. ## Definition text Building Information Modeling (BIM) is a method where the entire building is modelled digitally in 3D — and where each element in the model contains data: material, dimensions, supplier, maintenance schedule and more. BIM is not just an advanced CAD drawing — it's a dynamic information model. ## Why does it matter to you? As a client or homeowner, you'll encounter BIM primarily in two contexts: **During design and construction:** Architects and engineers use BIM to coordinate the project, detect clashes (e.g. pipes colliding with beams) and calculate quantities for tendering. **As documentation:** A BIM model of your building can serve as a "digital building passport" — an accurate, updatable record of all building elements. This makes future renovations easier and cheaper to plan and execute. The Danish state and large clients (municipalities, housing associations) increasingly require BIM on major projects. ## How it works BIM models are typically built in software such as Revit (Autodesk) or ArchiCAD. The model contains: - **Architectural model:** Walls, windows, doors, rooms - **Structural model:** Beams, columns, foundations - **MEP model:** Plumbing, electrical, ventilation The three models are coordinated throughout the design process — and clashes are resolved digitally rather than on the building site. ## Levels of development (LOD) BIM is classified by LOD (Level of Development) from 100 (schematic) to 500 (as-built documentation). The higher the LOD, the more precise and data-rich the model. ## Frequently asked questions ### Is BIM the same as a 3D drawing? No. A 3D drawing shows geometry. A BIM model also contains data — material, U-values, lifespan, cost. The difference is between a picture and a database. ### Should private homeowners care about BIM? Not directly — but for major renovations or extensions it's worth asking your architect for a BIM model as final documentation. It makes future alterations significantly easier to plan. ### How much does BIM cost? BIM requires specialist software and skills and is more expensive to produce than traditional drawings. For larger projects, the investment is typically recovered through coordination savings and reduced errors on site. ## For architecture studios: how AI can prepare the work BIM data can become a strong data layer for AI when model data is connected to quality checks, LCA preparation and architectural validation. - [AI and BIM](/en/knowledge/ai/ai-and-bim) ## Sources and basis - [Fremtidens Tegnestue methodology](https://fremtidenstegnestue.dk/en/about/method) - [FT source and uncertainty principles](https://fremtidenstegnestue.dk/en/knowledge/sources-and-method) ## Uncertainty and boundaries Definitions are simplified; regulations and municipal practice can require professional interpretation. ## Next step Read related concepts or project pages. ## Related pages - [LCA — Life Cycle Assessment](https://fremtidenstegnestue.dk/en/knowledge/concepts/lca): related-concept - [BBR — Danish Building and Dwelling Register](https://fremtidenstegnestue.dk/en/knowledge/concepts/bbr): related-concept - [Building Permits in Denmark](https://fremtidenstegnestue.dk/en/knowledge/concepts/byggetilladelse): related-concept - [BR18 — Danish Building Regulations 2018](https://fremtidenstegnestue.dk/en/knowledge/concepts/br18): related-concept - [AI and BIM](https://fremtidenstegnestue.dk/en/knowledge/ai/ai-and-bim): related-danish-ai-context - [Concepts](https://fremtidenstegnestue.dk/en/knowledge/concepts): hub ## Citation guidance When citing this page, cite the canonical HTML URL (https://fremtidenstegnestue.dk/en/knowledge/concepts/bim) as the public source and use this Markdown URL only as the agent-readable representation. Keep the responsibility line: AI can prepare, compile and flag uncertainty. The architect validates the consequences.