The purpose of this study was to establish the factors that influence the quality delivery of small-size design-build housing projects in Kasarani Constituency, which reports quite high numbers of unsafe and collapsed houses in Nairobi County. The objectives of the study are; to establish the influence of collaborative participation, concurrent project processes, transparency, object-oriented technology and risk-sharing on the quality delivery of small-size housing projects in Kasarani Constituency, Nairobi. The study design used is cross-sectional survey in which data was obtained using questionnaires from a sample size of 60, obtained from a target population of 70 construction project stakeholders in Kasarani Constituency. The sample consisted of project owners, contractors, subcontractors, engineers, suppliers and workers. The data was analyzed using descriptive statistics and Spearman's Rho statistical tests to show the influence of the independent variables on the dependentvariable and their relationship. Hopefully,this study will be significant in outlining the factors that promote the delivery of quality houses that meet client expectations.