The main objective of the study is to design and estimate water distribution network and underground drainage system for a residential layout of Vijayanagara 2nd stage of Mysore city using LOOP and SEWER software. The project area is 7.9 hectares consists of 353 sites. The water supply system is designed for this layout. The reliable source of water supply for this layout is mainly from Vanivilas water supply board. The present study provides estimation of overall cost of the project. The major cost components like pipe cost, manholes, laying of sewer pipe lines, are included in the analysis. Total cost of UGD for the layout is estimated to be (in 1000) 8817.56.