The airport rewrote the map. Everything that followed it — hotels, business parks, the NH44 upgrade, the hardware and aerospace clusters — pulled employment north of the city, and land values followed employment, as they always do.
Devanahalli sits inside that pull. The upcoming FASSCON Bangalore development and continued NH44 widening keep adding reasons for people to live here rather than commute here.
For a mid-term investor the arithmetic is simple: buy land in a corridor where infrastructure is still being commissioned, hold it while the corridor matures, and let the plot do the work.