Empirical evidence exist that construction contract documents contain scanty emphasis on health and safety requirements and budgeting in developing countries. This has affected the implementation of health and safety components and the sustainable delivery of construction projects. A number of studies have addressed the cost of construction health and safety. However, studies documenting the cost of the various components of health and safety seem scanty in construction literature. Consequently, the aim of this study was to evaluate the cost of implementing the health and safety components of buildings and the relationship with project cost. Using purposive sampling technique, 33 cost data for health and safety components of building projects were collected from a sample size of 25 out of a sampling frame of 57 Quantity Surveying consulting firms registered with the Lagos State Chapter of the Nigerian Institute of Quantity Surveyors. The data collected were analysed using mean and percentage. Findings from this study indicated that the three top health and safety components of building projects were scaffolding, staff safety training and personal protective equipment. The study concluded that the cost of implementing health and safety components in the study area was 1.69% and 2.02% for low-rise and high-rise buildings, respectively.
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