In this knowledge base, Topo4D brings together clear and reliable information regarding land surveying and real estate files. You will find practical articles on subdivisions, boundary markings, site surveys, and other common issues. Each topic is explained in clear language, with attention to both the technical and legal context. This ensures you are better prepared and know exactly when professional guidance is required.
3D laser scanning is often described as “digitally copying a building.” But how exactly does it work? What does such a scanner measure? And how are millions of measurement points converted into usable plans or a BIM model? In this article, we explain the process clearly — without marketing, but technically correct.
What does setting out a new build mean? In this article, you will read step by step how a land surveyor correctly positions a home on the site and why this is essential for a smooth start to construction.
Mast and flare inspections are crucial for safety and maintenance in industrial environments. In this article, you will read how drones are deployed to inspect these structures safely, efficiently, and without site disruption.
Setting out ensures that structures are correctly positioned on a construction site. In this article, you will read what setting out entails, when it is necessary, and why accurate measurements are essential for a problem-free construction process.
A section shows the vertical structure of a building and is essential for design, execution, and inspection. In this article, you will read what a section is, why it is important, and how it is prepared.
Photogrammetry is a measurement method in which images are converted into accurate measurement data and 3D models. In this article, you will read seven reasons why photogrammetry offers such significant added value for construction and surveying projects.
What is a point cloud and how does 3D laser scanning work? In this article, we explain how laser points are converted into accurate digital models and what they are used for.
A report of division establishes how a plot or building is legally split into separate entities. In this article, you will read what a report of division is, when it is required, and how the process works.
Pre-cadastral registration, also known as precad, is a preparatory step in cadastral and real estate-related files. In this article, you will read what pre-cadastral registration is, when it is needed, and how the process works.
Inspections can be carried out traditionally or with drones. In this article, you will read about the differences, when drones offer added value, and when a traditional inspection is more suitable.
Crack monitoring makes it possible to objectively track the evolution of cracks in buildings and structures. In this article, you can read when crack measurements are necessary, how they are performed, and what the results mean.
A change of use of a building is often subject to a permit, even without construction work. In this article, you can read when a permit is required, which exemptions exist, and which rules apply in Flanders.
A wall acquisition is required when building against a non-common wall. Discover how compensation is calculated and the role a sworn land surveyor plays.
Photogrammetry is a measurement technique in which drones and photos are used to create accurate maps and 3D models. Discover when this method is suitable and where its limits lie.
Distribution of shares and thousandths determine the rights and obligations within a co-ownership. Discover how this calculation is performed and the role the land surveyor plays.
Damage assessment and expertise ensure an objective determination of damage to real estate and form the basis for insurance files and legal action.
Drone to BIM converts drone surveys into accurate BIM models and offers an efficient way to digitally map existing buildings.
An as-built survey records how a project was actually executed. This data often forms the basis for updating the GRB.
A condition report objectively records the existing state of a building, site, or environment before works, rental, or interventions. TOPO4D prepares legally usable condition reports to protect all parties involved.
To determine m³ of earthworks, stockpiles, or extraction volumes, TOPO4D performs accurate volume measurements using drone, GNSS, total station, or 3D scanning. Based on a digital terrain model (DTM), we calculate cut-and-fill volumes and provide reliable data for planning, invoicing, and monitoring.
An environmental permit for subdivision is mandatory when you split a parcel into multiple building lots. TOPO4D guides you from measurement and plan preparation to submission via the Omgevingsloket, fully in accordance with current Flemish legislation.