Explained
Measured survey or topographical survey: which do you need?
By the Section Scale team · Published 7 November 2026
The difference
A measured building survey records the building itself: floor plans, elevations, sections and roof plans.
A topographical survey records the land: levels, boundaries, trees, drainage covers and other visible features, tied to Ordnance Datum.
When you need a measured building survey
- Extensions, loft conversions and basements
- Refurbishments and changes of use
- Floor area checks for sales and lettings
When you need a topographical survey
- New buildings and site layouts
- Planning applications that show levels and boundaries
- Landscaping, drainage and groundworks
When you need both
Any project that changes both the building and the ground around it, such as a large rear extension on a sloping garden. Both surveys can be done in the same visit, which saves time and cost.
Related services
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