The spread of COVID-19 has compelled organisations worldwide to rethink their cost structures, business strategies, and work procedures, which resulted in a shift towards a remote working environment. This research aims to determine the impact of information accuracy, clarity, timeliness, and accessibility on project management success. This study takes the deductive approach of research by defining the problems related to effective communication management under a remote working environment by formulating a relevant hypothesis, organising and collecting data using a survey method, making deductions and conclusions, and validating the conclusions against the formulated hypothesis. The study examined relevant academic research papers concerned with all research variables and applied the Triple Constraint theory. The data collection was done through a self-administered questionnaire, which received 221 valid responses. A set of hypotheses arising from a conceptual model of effective communication management was tested using partial least squares structural equation modelling (PLS-SEM). Empirical results revealed that only three variables significantly influence project success. It further reinforces findings on the impact of effective communication management on project success.