Access accurate surveys for BIM projects

Get measured surveys that deliver an accurate base model for BIM projects for architects and engineers to use as the foundation for their work. Our expert surveyors work with you to create a BIM survey specification and 3D BIM model to ensure you get the right information without experiencing project delays or increased costs.

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Surveys for BIM

Achieve accurate base models with our BIM surveys & 3D BIM model support services

Our technical experts work with you to create a BIM survey specification that defines the LOD (level of detail) that your architects and engineers require at the outset. This ensures our surveyors capture all required information when they are out on-site surveying.

Gain access to our additional 3D BIM model support services throughout the lifecycle of your project. These include:

  • 3D design co-ordination
  • 3D model project management and clash detection reporting
  • Additional measurement e.g. ‘As built’ Verification Survey

As well as architectural detailing, we also incorporate mechanical and electrical services information within the 3D BIM model, as well as adding topographic and underground utilities data.


“The model is very impressive and we can now be more confident with on-site works.”

 David Harrison, Design and Drawing Office Manager, Nusteel Structures

A 5-stage swift process to complete your project with ease

There are five stages to our survey for BIM specifications, which we developed in line with the RIBA Digital Plan of Works. This provides a great starting point for determining your requirements.

The LOD contained in the model increases progressively through the stages. The LOD in a BIM model are as follows:

LOD 1 - base survey mass model

The basic outline of buildings and structures without any architectural details at a 1:200 traditional scale.

Surveys for BIM LOD 1
Surveys for BIM LOD 2

LOD 2 - structural components base survey model

LOD 2 involves the major structural components and structural openings at a 1:200 traditional scale.

LOD 3 - standard survey model

This level includes principal basic architectural details and structures, suitable to generate survey plans, elevations and sections at 1:50 or 1:100 traditional scale. We also build the basic families to a default setting. These may include main MEP services or FFE in outline form.

Surveys for BIM LOD 3
Surveys for BIM LOD 4

LOD 4 - detailed survey model

This model contains detailed architectural and structural features. Families will be built to greater detail and principle finishes and construction will be indicated where known.

The model will be suitable for generating survey plans, elevations and sections at 1:50 or 1:20 traditional scale. It is also suitable for recording historic or listed buildings.

The main and subsidiary MEP and FFE elements will be included if required.

LOD 5 - detailed survey model with metadata

Similar to the LOD 4 model but enhanced with the addition of non-geometric/parametric data and record information supplied by the client or other third parties, where defined and agreed at the outset.

Have a surveying question? Take a look at our FAQs
Surveys for BIM LOD 4 + metadata

How can we help you?

Discuss your BIM survey project with a CADS expert

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Having CADS on board meant we were able to establish a high level of detail from the offset. Their depth of coordination during the 3D modelling process meant it wasn’t just the big architecture items that were addressed, but also the intricate details.

The standard of accuracy we required for the Bloomberg auditorium fit-out could not have been achieved without the good data that digital technology enabled us to capture.

Mark Hazell Project Manager, TMJ Interiors

3D design coordination for award-winning auditorium

Working with specialist joinery contractor TMJ Interiors, CADS coordinated the project designs of all 70 contractors to create a federated Revit® model

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Open & honest conversations about timescales and costs

The amount of time and therefore cost of capturing data and creating the model will increase as the level of detail increases.

Once we have agreed on the model’s LOD, we can discuss how to accommodate either a Revit® families library or incorporate your preferred specification using a bespoke format that we will create.

Take advantage of our knowledgeable technical experts

With our practical experience of digital construction, our professional team of surveyors provide much more than accurate measurements. We provide knowledgeable support and project management that allow you to enjoy the much-celebrated benefits of BIM in reducing time, cost and waste.

Ready to get your project started?

Complete complex building projects with ease and satisfaction by contacting our measured surveying experts. Simply fill in the form and a member of our team will get in touch with you.

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