Knowledge Base

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.