Dissertation (MA Development Studies)This research was undertaken at Chamwino District, in Chinangali II project of Dodoma region, the area was selected as it is where the newly agricultural population engaging in grape production is higher. Mainly the study aimed at examining the role of household in the process of participatory development planning (PDP) of development projects (DP) in Tanzania. Specifically the study examined the household perceptions on participation processes of PDP, household's perception on participation tools in PDP used in the project, forms in which the household participate in PDP, role performed by household in PDP of development project, and finally the study examined the household perception on the way to participate in PDP. This is because of the fact that, despite of practice of PDP still various DP indicates failure to deliver because of being focused to community participation which has no common interest and collective responsibility as the household is. Therefore to capture information both primary data and secondary data were used. The study involved 94 household as a sample drawn from 1000 household that the project covered. Qualitative data were analyzed using statistical package for social sciences (SPSS) version 16.0 concentrating on central tendencies. The findings indicates that household participation in PDP of DP are mixed, they represent an advance in our understanding of the multiple ways in which household members might engage (or not) in opportunities to contribute to DP and the implications of their involvement for social development outcome. This is because of the fact that household perceptions on participation processes of PDP are diverse, for instance many respondents pointed out to be more convenient with implementation and monitoring than the other. More over the study findings indicates that household has a well defined role in the project only in activities which are action based, while their role is not experienced in PDP activities requiring knowledge and skills of formal nature to execute them properly. This is because of the fact that, every variable that household indicated to be well convenient with are those which are action based than theoretical based. Finally the study concluded that, household can be easily depicted within the project if they actively participated on these areas than the other.