LOD BIM Explained: What Do LOD 200, 300, 400 Mean?

Almost every point cloud to BIM quotation contains an LOD figure, and in almost every project meeting it turns out that the parties understand it differently. The client expects individually drawn rafters at LOD 300, the service provider has priced the roof as a closed volume, and the gap only becomes visible at handover. This article explains LOD in BIM from the client’s perspective: what levels 100 to 400 actually contain, which level suits which purpose, and how to tell whether an LOD figure in a quotation is reliable. It is based on our experience from more than 2,500 point cloud projects.

What does LOD mean in BIM?

The term originates in the American design environment, where LOD 100 to LOD 500 describe how an element matures over the course of a new-build project, from the first massing study to the installed condition. As-built capture uses the same scale differently: there is no design progress to represent, only an existing building recorded to a certain depth. That difference is the source of the most common misunderstanding in scan to BIM.

European practice adds a further distinction. Many specifications separate LOG (Level of Geometry, the geometric depth) from LOI (Level of Information, the attributes attached to an element, such as material, element type or year of construction). The standard EN 17412-1 frames this as level of information need and asks a different question: not “which LOD do you want”, but “what information is required, for what purpose, and by whom”. The practical consequence for your project is simple: a number on its own is not a scope of work. What matters is what is actually modelled per element group.

Why “LOD 300” alone is not a reliable specification

Most renegotiations in scan to BIM projects do not arise during modelling, but from the understanding of this one term. A practical example: two providers quote LOD 300 for the same building. For the first, that means a roof as a closed volume with the correct pitch. For the second, it means individually drawn rafters, purlins and three spot heights. The price difference is significant and entirely justified, but it only becomes visible when someone asks what the level actually includes.

When you compare quotations, three points therefore matter:

• Per element group, not blanket: does the quotation list what will be modelled for walls, roofs, stairs, windows and facades, or does it state a single level for the entire project?
• Geometry and attributes separated: is it described which information will be attached to the elements, such as material, room data or opening type, or does it only address geometry?
• Acceptance criterion named: will handover be checked against the same list the model was built to? Without that reference, acceptance remains a matter of interpretation.

LOD 100, 200, 300 and 400 compared

VMT Solutions works with four levels and documents individually, for 22 element groups, what each level contains. The overview below summarises the system. The complete matrix, with image examples for every element group, is available on our page on the level of detail LOD 100 to 400.

Windows show the same logic particularly clearly. At LOD 100 only the opening in the wall volume exists. LOD 200 adds a window element with material and opening type. LOD 300 adds frame, glazing bars and reveal, and LOD 400 adds shutters and ornamental profiles. For permit design, LOD 200 is usually sufficient. For tendering a window replacement in an existing building, it usually is not.

Which level of detail does your project need?

The level does not follow from the building, but from the purpose of the model. The pragmatic question is: which decision will be made on the basis of this model, and what information is strictly required for it? Approached this way, the assignment can usually be settled in a few minutes.

• You are checking whether a property is suitable at all: LOD 100 is enough. Areas, volumes and massing cover the initial review; any further detail is budget spent without affecting the decision.
• You are planning a renovation and submitting for permit: LOD 200 is the standard case in the DACH market. Elements with material, complete room data, correctly positioned openings.
• You are moving into detailed design: LOD 300, at least for the element groups concerned. Element build-up, connections and a dimensional accuracy of ±15 mm are the difference between planning and re-measuring on site.
• You are working on a listed building or reconstruction: LOD 400 for the elements carrying ornamental features, usually facade, ceiling and stair. For the rest of the building, LOD 400 is rarely economical.

LOD is not accuracy: the most common misconception

Level of detail and accuracy are regularly conflated, but they are separate parameters. Level of detail describes which features of an element are modelled. Accuracy describes how far the model may deviate from measured reality. An LOD 400 model built from a poorly registered point cloud is detailed and still unusable, while a properly captured LOD 200 model is dependable.

This is why our Geomatiker check the point cloud for registration, coordinate system and completeness before the first wall is drawn. Only then does modelling start according to the agreed matrix, and from LOD 300 the documented dimensional accuracy of ±15 mm applies. What accuracy your source data can support at all depends on the capture method used. We covered that relationship in detail in our article on Matterport data accuracy for BIM.

What the LOD level means for price and schedule

Effort rises with every level, but neither linearly nor equally across element groups. The largest step comes from stucco, detailed cladding and true-to-original ornament at LOD 400, because these cannot be handled with standard families and have to be rebuilt element by element from the point cloud. Raising a wall from LOD 200 to LOD 300, by contrast, is comparatively moderate.

The recommendation that follows is straightforward: raise the level specifically where a design decision depends on it, and leave the rest at the level the purpose requires. A blanket LOD 400 across an entire building is almost always more expensive than necessary. Please also note that dimensioning, machinery, piping and electrical installations sit outside our standard packages and are commissioned separately, so that the scope is unambiguous from the start.

VMTS as your point cloud to BIM partner

VMT Solutions has been converting point cloud data into native BIM models since 2009, in Archicad, Revit, Allplan and Vectorworks, for surveying firms, architectural practices and building owners across the DACH region and worldwide. We process seven point cloud formats, E57, RCP, LAS, FLS, LAZ, XYZ and PTX, and deliver IFC2x3 and a QC report alongside the native file. Every project starts with a source data check by our Geomatiker and with a clear level assignment per element group.

View the complete level of detail matrix for 22 element groups, read more about our Scan to BIM services, or see how our Geomatiker verify the point cloud before modelling begins.

Frequently asked questions about LOD in BIM