Projects are created to deliver beneficial change for the client ([31] Turner, 1999). Therefore a building client needs are met by delivering the required project benefits. Importantly, the realisation of project benefits is a core component of project success ([3] Baccarini, 1999). A benefit is an outcome of change that is favourable, advantageous and positive and is attained by an individual, group or business ([24] OGC, 2006a).