This report adopts a retrospective approach to evaluate quality criteria guidelines (and their relevant assessment criteria) in real life contexts. In order to test each criterion, analysis has taken place after the procurement phase on ‘later-stage’ projects, where contracts had already been signed by the client. Feedback has been gathered through questionnaires which focused on the importance, specific details, possibility to provide evidence, and time consumption of assessment for each criterion. By comparing results across 11 countries, this report reveals different attitudes towards the effectiveness of each criterion.