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Please forward this error screen to 144. Luvara, Building Economics, Ardhi University, Dar es Salaam, Tanzania. The construction industry involves different stages that are followed for the building projects to be executed. Designing is one among the stages involved. What is expected to be executed is what had been designed but things may be different from this expectation. The objective of this research is to analyze the factors that lead to change of design and their effects during construction stage of building projects in Dar es Salaam, Tanzania. Luvara, Factors Influencing Change of Design of Building Projects during Construction Stage in Dar-es- Salaam Tanzania, International Journal of Construction Engineering and Management , Vol.

There are different factors that lead to change of design during construction stage some of which lead to cause problems to the overall performance of building construction project . The questionnaires were prepared in accordance with objectives of the research. The data collected from the questionnaire were coded and entered into the software to calculate the required statistics, including the mean, standard deviation and variance. The factors were ranked by their respective coefficient of variations for each category of the respondents. For the contractor’s factors, it is found that lack of contractor’s involvement in design, unrealistic construction’s schedule, changes initiated by contractors improve quality and constructability and rectifying of construction mistakes are the common factors that are experienced.

Lastly for managing consultant factors, Failure of communication amongst parties involved and improper supervision of the work executed by contractor found to be common factor. The study concludes that there still exist a number of factors leading to change of design during construction stage for the building construction projects executed in Tanzania. Success Factors of Design and Build Projects in Public Universities. The services quality of post in Saudi Arabia.