Introduction
A topographical survey is one of the most common survey types requested for planning, design and construction. It shows the existing site as it is: levels, boundaries, buildings, services and key features. This guide explains when you need a topographical survey and what you get. For planning applications, extensions and development, an up-to-date topo survey is usually the first step. Our partners deliver topographical surveys across London and the South East.
Planning and design
Most planning applications need an accurate site plan. Architects and engineers use topographical data to position new buildings, drainage, access and landscaping. Without it, designs can be refused or delayed. A topographical survey gives you contours, spot levels, boundaries and above-ground features in CAD format, ready for your design team.
When to commission one
Commission a topographical survey when you are preparing a planning application, before detailed design, when buying or selling land, or when you need as-built records. Site size and complexity determine cost and turnaround; our cost guide outlines typical ranges.