Why does changing my locality change the total cost if the built-up area stays the same?

Locality in the calculator is a directional adjustment for logistics, site access and typical soil conditions in that part of Bangalore, not a reflection of land value. A Bellandur plot near a low-lying drainage pocket may need more soil diligence than a plot on firmer ground in Jayanagar, and a narrow street in a dense ward can raise material handling cost compared with an open layout road. Watch how the total shifts while you keep the package fixed; that isolates site friction from finish ambition.