
Create accurate architectural models with our BIM surveys and 3D modelling services
BIM (Building Information Modelling) connects to built assets by providing a structured digital representation of their lifecycle, from design and construction to operation and maintenance.
Our highly experienced team of 3D laser surveying experts will work with you to create a Building Information Modelling (BIM) survey specification. The specficitation will deliver the LOD (level of detail) your architects and engineers require for their retrofit and construction projects.
Included in our 3D modelling BIM services:
- 3D design co-ordination
- 3D model project management and clash detection reporting for architects and facilities managers
- Additional measurement such as an as-built verification survey
BIM creates a digital twin of the built asset allowing architects, engineers, and contractors to plan efficiently. 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
Who we work with
Discover our 5-specification levels for delivering your ideal BIM survey
Developed in line with the RIBA Digital Plan of Works, our specification has five defined levels to provide you with the ideal BIM survey.
Stage by stage, we can provide an increasing level of detail (LOD) to deliver the required information and modeling intricacy at the optimal life cycle stage for your BIM project management.
Level 1 - LOD 1 - base survey mass model
This provides a basic 3D BIM model of buildings and structures at a 1:200 traditional scale – without any architectural details.


Level 2 - LOD 2 - structural components base survey model
This 3D BIM model includes major structural components and structural openings at a 1:200 traditional scale.
Level 3 - LOD 3 - standard survey model
This 3D BIM model includes basic principle architectural details and structures at 1:50 or 1:100 traditional scale. It is highly suitable for generating survey plans, elevations and sections.
We also build in basic families to a default setting, which can include main MEP (mechanical, electrical and plumbing) services or FF&E (furniture, fixtures and equipment) in outline form. This assists with design coordination, clash detection, and refurbishment planning.


Level 4 - LOD 4 - detailed survey model
This 3D BIM model contains detailed architectural and structural features.
Families will be built to a higher level of detail and principle finishes and construction will be indicated where known.
The model is suitable for generating survey plans, elevations and sections at 1:50 or 1:20 traditional scale. The main and subsidiary MEP and FF&E elements can be included if required for clash detection.
This level of 3D BIM model is often ideal for recording historic or listed buildings
Level 5 - LOD 5 - detailed survey model with metadata
This 3D BIM model is similar LOD 4 but enhanced with additional non-geometric/parametric data and record information supplied by you or a third party.
It is the most sophisticated 3D modeling option available within our Building Information Modelling (BIM) services.
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How can we help with your BIM project?
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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.
3D design team coordination for award-winning auditorium
Working with specialist joinery contractor TMJ Interiors, CADS experienced BIM modelling services team coordinated the project designs of all 70 contractors to create a federated Revit® model
Read case studyRevit® BIM integration
Once we have agreed on the BIM model’s level of detail (LOD), we also help accommodate either a Revit® families library or incorporate your preferred specification using a bespoke format which we create.
We leverage digital transformation and advanced BIM technology to optimise the time and cost of capturing data and creating models, ensuring the highest level of detail with maximum efficiency, while delivering a cost-effective solution.
Flexible technical support
With our practical experience of digital construction projects, our professional team of surveyors provide much more than just highly accurate surveys, measurements and 3D BIM modelling services.
We deliver knowledgeable support and project management that enable you to achieve the cost-effective benefits of BIM in reducing time, cost, and waste.
Ready to get your project started?
Complete complex building projects with ease with the support of our industry-leading measured surveying team. Simply complete the form and a member of our team will be in touch.
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