As-Built Surveys
Verification surveys of completed works, confirming what was actually built, where, and to what level, for handover, records and compliance.
What it is
An as-built (or as-constructed) survey records what has actually been built on the ground, compared with the design. It captures the final positions and levels of structures, drainage, services and finishes, providing an accurate record for handover, adoption, asset management and dispute avoidance.
What’s involved
Survey of works
Completed elements are surveyed to control.
Comparison
As-built positions are compared against design where required.
Drawing production
Results are drawn up as an as-built record.
Handover
Final deliverables are issued for records and adoption.
What you receive
- As-built record drawing (DWG)
- Levels and positions of constructed works
- Design vs as-built comparison on request
- Drainage and services as-built
- PDF and CAD outputs
Where it’s used
Project handover, highway and drainage adoption, utility records, and verification of construction against design.
Standards & compliance
Tied to project control and OS grid; deliverables prepared to adopting authority or client specification.
Common questions
Ideally as elements are completed and before they’re covered up, particularly for below-ground drainage and services.
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