Surveys for BIM


Our BIM surveys provide an accurate base model for architects to use when developing their designs

Our technical experts will work with you to create a BIM survey specification that defines the LOD (level of detail) that your architects and engineers will require at the outset.

This ensures our surveyors capture all required information when they are onsite surveying. And, as a result, we’re able to deliver the 3D Revit Model with the required LoD shown here.

In addition to architectural detailing, we can also incorporate mechanical and electrical services information within the 3D BIM Model. We can also add topographic and underground utilities data.


CADS’ survey clients include

C A Design Services client Pick Everard
Measured survey client - IngletonWood
C A Design Services client Morrisons logo

Survey for BIM specification – a five-stage process

There are five stages to our “Survey for BIM” specifications. We have developed these in line with the RIBA Digital Plan of Works. This provides a great starting point for determining your requirements. The Level of Detail or LOD contained in the model increases progressively through the stages which are described below.


Defining the Level of Detail (LOD) in Your BIM Model

The amount of time and therefore cost of capturing the data and creating the model will increase as the level of detail increases. Once we have agreed the model’s Level of Detail, we can then discuss how to accommodate either a Revit® Families library or incorporate your preferred specification using a bespoke format that we will create.

LOD1 – Base survey mass model

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

LOD2 – Structural components base survey model

  • the major structural components and structural openings at a 1:200 traditional scale.

LOD3 – Standard survey model

  • the 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.

LOD4 – Detailed survey model

  • 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.

LOD5 – Detailed survey model with metadata

  • As with a level 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.

Digital construction related services

In addition to our survey for BIM, we also offer additional 3D BIM model support services which you can use 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 Surveys

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 will help you enjoy the much celebrated benefits of BIM in reducing time, cost and waste.


Measured building survey delivered as Revit Model
As built measured survey of historic market square delivered as 3D model
Image of 3D Model from Measured Building Survey Carried Out By C A Design Services at Goodmayes Hospital Site
Design Coordination of Federated Model European HQ

How Can We Help You?

Please get in touch to discuss your BIM survey requirements or get a survey quote by filling out the form

or contact us on 01493 440444, or by email sales@cadesignservices.co.uk


Image of CADS surveyor on site with a laser scanner

Case Studies

Survey and 3D model for civil engineering project

Survey and 3D model for civil engineering project

Specialist joinery contractor TMJ Interiors was appointed by main contractor Sir Robert McAlpine to fit-out the state-of-the-art auditorium at the new European Headquarters for media and data giant Bloomberg.

Read Case Study >


Extensive Measured Building Survey of Salisbury Maltings

Extensive Measured Building Survey of Salisbury Maltings

Our client’s instruction was to deliver a full topographic site survey and traditional 2D floor plans of all retail units and apartments together with a LOD2 3D model of the site.

Read Case Study >



Our clients include


Employing over 100 people across five UK locations we offer an unrivalled, comprehensive and integrated range of planning, communication, design, architecture and implementation services, as well as sector specific software applications StoreSpace® and Storeview®.

C A Design Services is registered in England No. 01595687 at The Design Centre, Hewett Road, Gapton Hall, Great Yarmouth NR31 0NN.

Phone: 01493 440444
Email: sales@cadesignservices.co.uk

C A Design Services accreditations