*M.E.,
**B.E., M.E., Ph.D., Assistant Professor,
***B.E., M.E., Assistant Professor,
A successful project is mainly associated with cost and time control. For the purpose of project management and control, it is not sufficient to consider only the past record of costs and revenues incurred in a project. This study focus on investigating the factors influencing Tamil Nadu large construction projects A questionnaire survey has been made amongst Government and Private Engineers to examine the various factors affecting construction cost performance. The collected Data was analyzed with statistical tools to determine the ranking of factors. The topmost twelve factors were selected and the percentage of cost overruns was calculated based on regression model. The important two parameters which influences the top most factor escalation of cost of Construction materials were forecasted for the three more subsequent years (2015, 2016 and 2017) using the available data.
Cost overruns, construction Industries, Influencing factors, Questionairre Survey, Tamil Nadu