Commission a site inspection when you need a current, evidence-led check of physical conditions, active work and immediate controls. Commission an audit when you need to test whether the organisation's health and safety arrangements are defined, implemented, monitored and improved across a project or business.
Neither label removes the dutyholder's responsibility for controlling risk. Under CDM 2015, Principal Contractors must plan, manage, monitor and coordinate the construction phase, while contractors must plan, manage and monitor the work under their control. An external reviewer provides assurance and evidence; they do not take control of the site simply by issuing a report.
“Check our site” is too vague. State whether the priority is immediate site conditions, a particular high-risk activity, Principal Contractor arrangements, contractor performance, accreditation evidence, recurring findings or readiness for a client review.
Site inspection and health and safety audit compared
| Question | Site inspection | Health and safety audit |
|---|---|---|
| Primary focus | Current site conditions, work activities and visible controls. | The effectiveness of defined management arrangements and their implementation. |
| Typical evidence | Observations, photographs, discussions, permits, briefings and activity-specific records. | Policies, responsibilities, plans, procedures, records, trends, interviews and samples from practice. |
| Time perspective | A snapshot of the work and conditions present during the visit. | A wider view across a period, process, project or group of sites. |
| Output | Prioritised findings and corrective actions tied to locations or activities. | System findings, strengths, gaps, evidence trails and improvement actions. |
| Best used for | Routine assurance, changing work phases, high-risk activities and follow-up visits. | Governance, repeated failures, pre-qualification evidence, management review and cross-project consistency. |
The terms are sometimes used loosely. A useful proposal should describe the actual scope, sampling method, report format and limitations instead of relying on the word “audit” or “inspection” alone.
What should a construction site inspection cover?
The inspection should follow the work actually taking place. Depending on the project phase, it may review access and segregation, work at height, excavations, lifting, temporary works, plant, hazardous substances, housekeeping, welfare, fire arrangements, public protection, supervision and the condition of relevant equipment.
Documents should be sampled where they help test the live controls—for example the Construction Phase Plan, task RAMS, permits, inspection registers, induction records and evidence of equipment examination. The objective is not to reward a full folder when site practice contradicts it.
Urgent risk should be raised with the responsible manager during the visit rather than waiting for the report. The report should distinguish immediate action from lower-priority improvement and record any area or activity that could not be inspected.
What should a health and safety audit cover?
An audit can test whether the management arrangements are suitable and working. A construction-focused scope may examine leadership, responsibilities, competent advice, planning, risk assessment, contractor selection, design and temporary-works coordination, workforce consultation, training, supervision, monitoring, incident learning, action close-out and management review.
HSE's Plan, Do, Check, Act approach separates monitoring and reporting from formal review. HSE also recommends periodic audits of management structures and risk controls for larger organisations. That does not mean every small contractor needs certification or an elaborate audit programme: the approach should be proportionate to the business, risks and client requirements.
An audit should sample implementation, not merely compare document titles with a checklist. HSE notes that inspectors use a wide range of evidence and observations when assessing compliance rather than relying only on a claim to meet ISO 45001.
When is a combined inspection and audit useful?
A combined review is useful when the buyer needs to understand both what is happening on site and why the management system allowed it. Common triggers include:
- repeated findings across several visits or projects;
- a new Principal Contractor mobilisation or rapid change of work phase;
- concerns about subcontractor selection, supervision or close-out;
- an incident, client escalation or HSE visit indicating possible wider weaknesses;
- preparation for a tender, accreditation renewal or client assurance review; or
- a director needing reliable evidence of whether company procedures work in practice.
The report can separate site-specific findings from business-wide system actions. This prevents a local housekeeping issue from being treated as a corporate failure, while still escalating recurring weaknesses that require management action.
Does a general inspection replace statutory inspections?
No. A general health and safety visit does not replace a statutory or specialist inspection, thorough examination, test, design check or permit required for particular work or equipment.
Scaffolds, excavations, lifting equipment, work equipment, local exhaust ventilation and other risk controls may have specific competence, timing and record requirements. The general report should identify missing evidence or visible concerns, but the appropriate competent person must complete the required specialist work.
Similarly, a monthly consultant visit does not discharge the Principal Contractor's continuous duty to manage and monitor the construction phase. Read the separate guide on setting a proportionate inspection frequency.
What should the report and close-out process include?
A useful report should identify the project, visit date, scope, attendees, areas inspected, evidence sampled, limitations and each finding. Actions should include a clear description, location or system reference, risk priority, responsible owner, target date and expected close-out evidence.
Photographs help establish context, but a photograph alone may not prove that the underlying system has changed. Close-out might also require a revised drawing, competent-person report, briefing record, purchase evidence, updated plan or follow-up observation.
Trend reporting should group recurring themes—such as work at height, document control, temporary works or subcontractor supervision—without hiding serious individual findings inside a score. HSE's approach emphasises monitoring performance and then acting on weaknesses; the value lies in completed improvement, not the number of reports produced.
Questions to ask before commissioning the review
- What decision or assurance question must the review answer?
- Is the scope site conditions, a specific activity, management arrangements or a combination?
- Which project documents, contractors and work areas will be sampled?
- How will immediate risk be escalated during the visit?
- How will findings be prioritised without implying a guaranteed legal-compliance certificate?
- What evidence will be accepted for close-out, and who verifies it?
- Will recurring findings be trended across visits or projects?
- Which specialist or statutory checks sit outside the reviewer's scope?