Measured Building Surveys vs Topographical Surveys: What’s the Difference?

South West Surveys – Specialists in 3D Laser Scanning Across the South West

Modern surveying technology has transformed the way construction, architecture, and civil engineering projects are planned and delivered. At the forefront of this transformation is 3D laser scanning, an advanced technique used in both measured building surveys and topographical surveys.

While both types of surveys are essential tools in the built environment, they serve very different purposes. At South West Surveys, we offer both services, so here’s a quick guide to help you understand the key differences and when you might need each one.

What is a Measured Building Survey?

A measured building survey is the process of capturing accurate, detailed data of a building’s internal and external layout. Using 3D laser scanners, we produce high-resolution as-built 2D drawings or 3D models that architects, engineers, and developers can rely on for precise planning and design.
These surveys are ideal for:

• Building renovations and extensions
• Heritage building documentation
• Space planning and interior redesign
• Legal documentation and lease plans

What is a Topographical Survey?

A topographical survey (often called a “topo survey”) focuses on the landscape rather than buildings. These surveys map the natural and man-made features of a site—such as contours, trees, drainage, roads, and boundary lines, providing vital information for land development and planning applications.


Topographical surveys are typically used for:

• Housing developments
• Road or infrastructure planning
• Environmental impact assessments
• Landscaping and drainage design

At South West Surveys, we use a combination of 3D laser scanning, total stations, and GPS to capture precise land data, depending on the nature and scale of the site.

The Bottom Line

Whether you’re developing a site or renovating a property, accurate survey data is essential. At South West Surveys, we use the latest laser scanning technology to deliver high-precision measured building surveys and topographical surveys across the South West.

This post was written by Nick White