The Green Line effect
A metro line does something specific to the ground around it, it compresses time and widens a shopfront's reach.
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Namma Metro's Green Line runs roughly 33.5 km from Madavara in the north-west to Silk Institute in the south, threading the established western suburbs, Yeshwanthpur, Rajajinagar and Malleshwaram along Tumkur Road, through the Majestic interchange with the Purple Line, and on into South Bengaluru along Kanakapura Road.
For the Rajaji Nagar–Basaveshwara Nagar belt, the relevant stations are Rajajinagar, Mahalakshmi and Sandal Soap Factory, with Mantri Square Sampige Road a short ride beyond. Trains run at roughly five-to-ten-minute intervals from early morning to late night, turning a traffic-bound cross-city trip into a predictable twenty-odd minutes.
What rapid transit does to a neighbourhood is well documented the world over: it shortens journeys, widens the catchment a single address can draw from, and tends to lift both the footfall and the value of well-located, ground-floor real estate near stations. Transit-oriented demand is one of the quieter reasons established, metro-served western pockets have held their value even as the city has spilled outward.
Sources: Namma Metro / BMRCL; Green Line (Namma Metro), Wikipedia. Station distances are approximate and by road.