of public housing construction projects in Isiolo County, Kenya. The specific objectives of the study included: To examine the influence of project scope management on implementation of public housing construction projects in Isiolo County, Kenya; To establish the influence of project time management on implementation of public housing construction projects in Isiolo County, Kenya; To determine the influence of project cost management on implementation of public housing construction projects in Isiolo County, Kenya; To assess the influence of project quality management on implementation of public housing construction projects in Isiolo County, Kenya. The study was anchored to the theory of project management, theory of triple constraints and complexity theory. The study adopted a descriptive research design. The target population for the study was 140 county governments’ funded housing construction projects in Isiolo County, Kenya. The study conducted census and a pilot study was undertaken to check the validity and reliability of the data collection instrument. A questionnaire was used to collect primary data and consisted of both structured and open-ended questions to give qualitative and quantitative data. Data was analyzed using descriptive and inferential statistics in which frequencies and percentages were used. SPSS was used to analyze the data and to determine whether the independent variables are related to the dependent variable. Data was presented in tables, pie charts and graphs. Qualitative data was coded, and themes related to research questions in the study identified. Qualitative data was interpreted by attaching significance to themes and patterns observed by the use of content analysis. The study results imply that project management constraints jointly influenced positively and significantly implementation of county funded public housing construction projects. This implies that these variables are very significant and need to be factored to improve implementation of county funded public housing construction projects. However, the magnitude of the influence was different for the specific project management constraints. Time management had the largest effect followed by cost management then scope management and finally the quality management. The study recommended county government need to manage constraints in the projects. This could go a long way in ensuring there is improved implementation of county funded construction housing projects in Isiolo County, Kenya.

Keyword: Project Management, Project Manager, Project Cost Management, Project Quality Management, Project Scope, Project Scope Management, Project Time Management and Project Triple Constraints.

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