Topographical Survey London

Every project is quoted individually — we return a fixed price within 24 hours based on your site size, complexity, access conditions and level of detail required. Prices start from £495+VAT. No hidden fees, no surprises.

Yes — most local planning authorities require a topographical survey as part of a planning application, particularly for house extensions, loft conversions, new builds and residential developments. Architects and planning consultants use the survey data to produce accurate site plans, section drawings and drainage layouts that meet planning requirements. Without accurate survey data, planning submissions are often rejected or returned for revision.

There is no technical difference — topographic survey and topographical survey refer to exactly the same thing. Topographical is the standard British English term used by surveyors, local authorities and planning portals in the UK, while topographic is more commonly used internationally and in American English. Both describe a survey that captures the physical features, levels and boundaries of a site to produce accurate CAD drawings and mapping data.

A topographical survey captures the physical features of a site and the land around it — including levels, spot heights, contours, buildings, boundaries, trees, drainage features, kerbs, roads and utility covers. The exact scope is agreed at the outset and tailored to the project, whether for planning, architectural design, drainage or construction. Features beyond the site boundary can also be included where needed to give wider context.

We deliver fully layered DWG CAD files and scaled PDF drawings as standard. Drawings are produced at an appropriate scale — typically 1:100, 1:200 or 1:500 — and related to OS National Grid and Ordnance Datum Newlyn (ODN) unless a project-specific grid is required. The layered DWG format is ready to open directly in AutoCAD, Revit, MicroStation and most other design software used by architects, engineers and planners.

All topographical surveys are related to the Ordnance Survey National Grid (OSGB36) for horizontal position and Ordnance Datum Newlyn (ODN) for height, unless a local project grid or datum is specified. Using OS coordinates means the survey data integrates directly with Ordnance Survey mapping, planning portal submissions and other survey datasets on the same project.

Access to the site is required for a complete and accurate topographical survey. Many features — particularly levels, drainage, vegetation and internal boundaries — cannot be captured reliably from the public highway. We will advise on any access arrangements needed when reviewing your site, and can liaise with site managers, owners or neighbours where required.

We use a combination of Leica GNSS receivers and robotic total stations to capture data to survey-grade accuracy. GNSS is used where open sky allows, with total stations used in constrained urban environments or where obstructions affect satellite visibility. The combination ensures reliable, consistent accuracy across the whole site regardless of conditions, with all data quality-checked before issue.

For most residential and smaller commercial sites, we can attend within a few days of instruction, with drawings issued within 24–48 hours of the site visit. Larger or more complex sites require more time for both fieldwork and processing, and programmes are agreed when quoting. If you have a planning or design deadline, let us know and we will work to accommodate it.