Comprehensive hazard identification is an initial and ongoing element within the risk assessment cycle for construction setups. It involves systematically reviewing work activities and site characteristics to anticipate potential causes of harm. Methods typically include physical inspections, analyses of previous incident data, and formal input from workers familiar with the tasks and environment. UK guidance provided by the Health and Safety Executive (HSE) emphasises including both routine and non-routine site operations, such as plant movement and material delivery procedures, during hazard reviews.

Stakeholder engagement is frequently regarded as beneficial during hazard identification. When clients, designers, contractors, and workforce representatives contribute knowledge during early planning, the resulting assessment may capture less obvious hazards linked to project-specific logistics or design features. This practice aligns with the collaborative approach encouraged by CDM 2015, where sharing relevant information between dutyholders is a statutory expectation.
Tools such as risk checklists and templates, including those offered on the official HSE website, help enable consistent, repeatable reviews. These resources prompt assessors to consider areas like work at height, ground conditions, and the presence of existing structures. Using standardised templates may assist in ensuring that no critical hazard types are inadvertently overlooked, especially on complex or multi-phase sites.
External environmental factors—including proximity to public highways, utilities, or ecologically sensitive zones—are often factored into hazard identification. For example, construction sites neighbouring live railway infrastructure or schools may require specific consideration of pedestrian movements, noise, or dust. The approach to identifying these hazards generally follows sector norms and integrates known regulatory requirements for special site contexts.