First block is perhaps a bit smaller comprising few hundred sites but more developed among the two blocks in BSK 5th Stage since it adjoins the already developed ISRO Layout, Vasanthapura (Kumaraswamy Layout) localities and closer to ORR, Banashankari Temple/TTMC, Kanakapura road Metro Cash & Carry, Jayanagar, J.P.Nagar, Basavangudi, Padmanabhanagar & first four stages of BSK.
On 30 November 1980 the Hon'ble Chief Minister Shri. R Gundu Rao laid the foundation stone of the Kempegowda Institute of Medical Sciences and Hospital in the premises of the Sangha and announced the grant of vacant land in Banashankari to be used for the construction of college building and hostels.
It passes through major neighborhoods and suburbs such as Hebbal(NH7), Banaswadi, Krishnarajapuram(NH4), Marathahalli, Madiwala(NH7), BTM Layout, JP Nagar, Banashankari, Kengeri, Bangalore University, Nagarbhavi, Nandini Layout and Gokula.