Hold points and witness points are formal quality checkpoints built into the inspection and test plan for a construction project. A hold point requires work to stop until the inspection or test has been completed and signed off. A witness point is an opportunity for the client or engineer to observe a process, but work may proceed if they choose not to attend. Understanding and following these procedures prevents defective work being covered up and ensures the finished product meets the specification.
Key Hazards
Defective work proceeding past a hold point without the required inspection approval
Costly rework and delays when quality issues are discovered after work is covered
Non-compliance with specification leading to structural or performance failures
Incomplete records making it impossible to demonstrate compliance during handover
Control Measures
Review the inspection and test plan to identify all hold points and witness points for your activities.
Notify the supervising engineer at least 24 hours before reaching any hold point in the programme.
Stop work at every hold point and do not proceed until the inspection is completed and signed off.
Prepare the work area for inspection by ensuring access, lighting, and cleanliness are adequate.
Record all inspection results, measurements, and outcomes on the approved documentation.
Photograph critical stages of the work before they are covered or become inaccessible.
Ensure all material certificates, test results, and delivery tickets are available for the inspector.
Do not cover, backfill, or enclose any work subject to a hold point until formal approval is received.
Communicate upcoming hold points and witness points to your team during task briefings.
Remember
A hold point means stop — work must not proceed until the inspection is completed and approved.
Notify the engineer in advance so inspections can be scheduled without causing unnecessary delays.
Covering work before a hold point inspection is signed off can result in costly strip-out and rework.
Quality records and photographs must be completed at every inspection stage for the project handover.
Witness points should still be treated seriously even though work may proceed if the engineer is absent.
Good quality management prevents defects, reduces rework, and protects structural integrity.
Applicable Legislation: CDM Regulations 2015 · BS EN ISO 9001 (Quality Management) · Health and Safety at Work etc. Act 1974