A setting out engineer takes the architect's design and physically marks it on the ground for the contractor. The marks are tied to the OS National Grid with sub-2cm accuracy so the building goes where it should.
What a setting out engineer does
A setting out engineer extracts dimensions and coordinates from an engineering or architectural plan and physically locates them on the ground. By establishing physical markers at predetermined locations, the engineer provides the precise dimensional control necessary to ensure that buildings, foundations, and civil works are constructed in their correct absolute and relative positions.
Setting out is governed in the UK by BS 5964 (Building setting out and measurement).
2026 cost bands (per day, ex VAT)
| Context | Low day rate | Mid day rate | High day rate |
|---|---|---|---|
| Small contractor / regions | ~£300-£450 | £450-£650 | £650-£800 |
| London / complex structures | ~£450-£650 | £650-£850 | £850-£1,000+ |
A typical small residential extension might be 1-2 days of setting out across key milestones. Medium commercial shells can be several days or a retained-service arrangement.
Tolerance bands
UK 2026 setting out tolerance bands per BS 5964:
- Steel frames and prefabricated beams: ±2-3mm
- Secondary control points: ±5mm
- General earthworks: ±1.5√L mm (L = distance in metres)
- Standard masonry lines: ±5-10mm
A setting out engineer who exceeds the tolerance is vulnerable to a contract dispute.
The content cluster
For a complete guide to setting out from topographical data, see the Topographical Survey content series — 14 articles including Setting Out from Topographical Data.
Related services
- Topographical Survey — the baseline data for setting out
- Volumetric Survey — for cut-and-fill verification during construction
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