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CAD modeling for architecture: Precise models for existing buildings
Our cloud-based solution takes architectural CAD modeling to the next level by digitizing the entire workflow—from 3D scanning to the final 3D CAD or BIM model.The raw data captured in the first step is automatically processed in the second step. This creates tailored models and reliable planning foundations for architects, planners, and asset managers—efficiently, precisely, and at scale.
We deliver exactly the model you need for your project phase — reliable, fast, and ready to use:
✓ 3D CAD models (from simulation models to architectural models)
✓ 2D plans (floor plans, sections, and elevations)
✓ Room books
✓ Building envelope models (including material and surface analysis)
Suitable models, for every project
3D CAD models
We carry out a precise room-by-room survey of your building using 3D laser scanning. As an optional extra, we can also document the building envelope using drone surveys. We use the survey data to create a precise as-built 3D CAD model. The model is available in various levels of detail (LOD) and can be flexibly adapted to your specific requirements:
- The simplified 3D CAD model (Level 1) is based on standardised elements with simplified geometry. It focuses on the space-defining elements and deliberately avoids unnecessary complexity. Ideal for energy simulations, energy consultations, facility management and initial renovation planning work such as cost calculations.
- The architectural 3D CAD model (Level 2) is supplied with precise dimensions and room designations. It models components such as doors and windows in their as-built condition. Suitable for architectural planning and scan-to-BIM workflows.
- The customized 3D CAD model (Level 3) is a highly detailed model tailored precisely to client-specific requirements, including textures, detailed furnishings, simple materials and building services upon request. Suitable for the most demanding individual requirements.
Scope
Detailed interior and exterior modeling, including doors, windows, stairwells and roof structures. Depending on the level, additional elements may be included, ranging from radiators to optional building services equipment (TBE).
Formats
RVT, IFC, DWG, AutoCAD and export to ERP/CAFM/BIM, as well as others on request
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2D plans: floor plans, sections, views
We survey your building room by room using 3D laser scanning. Using the scan data, we create precise 2D plans, including floor plans, views and sections – either as new drawings or as updates to existing plans. Depending on the intended use, these are available in three levels of detail:
- The overview plan (Level 1) provides a clear, concise representation of the room layout with windows and doors, without dimensions. Ideal for letting and property management.
- The architectural plan (Level 2) is a detailed architectural floor plan with dimensions and area calculations in accordance with DIN 277 and WoFlV. The standard for planning and facility management.
- We create a customized plan (Level 3) individually to your requirements, including building services, furnishings, hatching and specific area
- calculations. For the highest planning standards.
Scope
Floor plans, 4 views and 2 building sections as standard. Includes doors, windows, wall thicknesses, room labels and area calculations. Depending on the package, this may also include radiators, building services and a furniture layout plan.
Formats
DWG, PDF, JPG and others on request.
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Roombook
We survey your building room by room using 3D laser scanning. From the measurement data, we create a digital room index: a structured list of all rooms and floors in your property, complete with all relevant attributes.
Area calculations are carried out in accordance with DIN 277, WoFlV or GIF standards. Depending on the intended use, these are available in three levels of detail:
- The overview list (Level 1) provides an overview of rooms by property and floor, including basic details and floor area calculations in accordance with DIN 277 or the WoFlV. Ideal for a quick overview of the property portfolio and for letting.
- The detailed list (Level 2) provides a combined floor area calculation in accordance with DIN 277 and WoFlV. Suitable for administration and quick cost estimates for refurbishments.
- We produce the customized list (Level 3) individually to your requirements – including specialised standards (ÖNORM, SIA), structural fittings and building services components. For the most demanding planning requirements.
Scope
Overview by property and floor, including room designations, floor areas, room heights and usage codes; depending on the level, supplemented by fitting features such as floor coverings, radiators and other technical elements.
Formats
XLSX, PDF, CSV and others on request.
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Building envelope model
Using drone photogrammetry, we capture your building seamlessly from the air – precisely, without scaffolding or site visits. Our AI analyses the image data, automatically identifies the relevant building components and distinguishes between materials. The result: a precise 3D model of the building envelope with exact areas, material classification and orientation by
cardinal directions. Ideal for energy consultancy, individual renovation roadmaps (iSFP), grant applications (BAFA/KfW) and building physics simulations.
You will receive:
- the 3D model of the building envelope
- the surfaces broken down by material
- the orientation/cardinal direction of each external surface
- all data as an Excel file with material/colour code per surface area (m²)
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Detail Levels: As precise as your project requires.
Not every project requires the same level of detail – that’s why we offer our models in three different levels.
From a quick overview to a detailed model: Our detail levels are tailored to your needs, providing you with exactly the information you need for your project.
Additional Services
On request, you can book additional services to further optimize your building assessment and project efficiency. Contact us to learn more about our flexible service offerings.
Renovation Roadmap and Planning
Enables deep renovations to significantly reduce CO2 emissions and costs.
Circularity / Material Pass
Provides insights into the circularity of a building.
CO2 Accounting
Allows you to track the embedded carbon, conduct lifecycle analyses, and create portfolio analyses.
Export to ERP / CAFM / BIM
Enables digital building, portfolio, and asset management.
What is CAD modeling in architecture?
CAD (Computer-Aided Design) refers to the computer-assisted creation of technical drawings and building models. CAD modeling thus addresses the challenge that up-to-date, reliable plan data is often lacking for existing buildings.
Definition: From point cloud to CAD architectural model
The starting point for any as-built modeling is real measurement data. The building is digitised room by room using 3D laser scanning. The result is a point cloud – millions of individual measurement points that represent the exact geometry. This point cloud is used to create a so called as-built model: a dimensionally accurate digital representation of the building exactly as it was actually constructed. This also includes deviations and structural features that are often missing from old plans. Depending on the project requirements, this model is processed into a 3D CAD model, 2D plan, room book or building envelope model, thus forming the basis for Building Information Modelling (BIM) and digital as-built documentation.
What software is used for CAD modeling?
Lumoview works with the industry standard: Autodesk Revit as 3D architectural software for Building Information Modelling (BIM) and AutoCAD as a tried-and-tested CAD drawing programme for precise 2D plans. The key difference from traditional providers: you do not need to own or know how to use this software. The raw data from the 3D scan is first processed automatically on our LumoCloud platform. We then finalise the model in Revit or AutoCAD. You receive your finished data in
CAD-system-specific data formats (RVT, DWG) and CAD-system-neutral formats (IFC, PDF), without the need for your own licences or training.
Why outsource CAD modeling? Scan-to-CAD vs. manual drafting
Architects and design teams need to document existing buildings, but manual on-site measurement is time-consuming, prone to errors and ties up valuable internal resources. This is followed by laborious, manual drafting work, often based on incomplete data.
Scan-to-CAD resolves this bottleneck. Instead of measuring and drawing by hand, the LumoScanner captures the building in seconds per room. The data is processed automatically in the LumoCloud and finalised by CAD experts in Revit or AutoCAD.
The result:
Faster
Automated data processing instead of weeks of drafting work.
More accurate
Laser-based measurement data instead of a tape measure and guesswork.
More scaleable
Large portfolios can be processed efficiently, consistently and to a high standard
Ressource-efficient
You can focus on the actual planning, not on the measurement.
Who is automated CAD modeling suitable for?
With its selectable levels of detail and flexible output formats, Lumoview meets a range of requirements throughout the entire building workflow:
Architectural firms & specialist planners
receive precise as-built models as a basis for conversion and renovation planning. The models integrate seamlessly into existing scan-to-BIM workflows for Building Information Modelling and replace time-consuming on-site measurement.
Energy consultants and renovation planners
require geometrically valid building data for energy assessments, simulations and customised renovation roadmaps (iSFP). Our simplified 3D models are optimised precisely for this purpose: lean enough for high-performance calculations, precise enough for reliable results.
Property management & facility management
rely on standardised, digital building inventories. Our CAD modeling provides the data foundation for CAFM systems, floor area calculations in accordance with DIN 277 and GIF, as well as structured documentation of entire portfolios.
Frequently asked questions about digital building modeling with Lumoview
In our frequently asked questions, you’ll find everything you need to know about digital building modeling with Lumoview. Didn’t find the answer you were looking for? Feel free to contact us — we’re happy to assist you!
An as-built model represents the actual state of a building after it has been captured – including all structural features and deviations from the original design. It serves as an accurate foundation for renovations, remodeling, or documentation.
LumoCloud is our proprietary cloud-based software solution that efficiently processes scan data – from the upload of point clouds to the final BIM or CAD model. The entire process is digital, efficient, and GDPR-compliant.
Yes, that’s possible at any time. If you already have scan data, we can process it later and create new models in different levels of detail, tailored to your needs.
The processing time depends on the size and complexity of the object, as well as the desired level of detail. Simple CAD models are typically delivered within a few business days. For more complex BIM models, we will agree on the timeframe individually with you.
Revit exports are available upon request. 360° tours are not currently part of our offering.
The cost depends on the area, building complexity, and desired level of detail. We’d be happy to provide you with a quote after a free consultation. Feel free to contact us!
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