This research concerns a quantitative examination of the influencing factors on the achievement of quality on construction projects. Quality performance on construction projects has been conceived as a function of the design process that occurs before the design of the product, site team collaboration and interpersonal relationships, high work-place-supervision, on-site motivation and role definition. This conception has culminated in postulated determinants of quality achievement on construction based on a theoretical understanding. Aspects of measure of perceived design core job characteristics and site organisationand- management phenomena were factor analysed. The verification of the postulated determinants was accomplished by testing of a network of eight main hypotheses using multivariate analytical technique in multiple regression. Varied results emerged with four main hypotheses supported, two partially supported and the remaining two unsupported by data. The assertion is that manipulative actions on design core job characteristics, team collaboration and consensus with mutual understanding and agreement on project goals, mutual exchange with site supervisory staff and subordinates, and role definitions conducted within an integrated framework would contribute an aggregated beneficiary effect on quality achievement on construction projects.