You will not find any flat with 1000 sq ft + open balconies + utilities + car park around Bellandur. Neighborhoods within 5-10km such of Bellandur such as areas around Marathalli and main road, Brookfield, Varthur, sarjapur rd, HSR, Electronic city, Koramangala, BTM have all breached 50 lac for 1000sq ft several years ago.
You might get lucky after searching really hard but you might end up compromising on your desired features. Lesser carpet area, poor accessibility to main roads, street parking.
With this budget you can find flats beyond tue radius in areas like Bommanahalli, Akshay Nagar, Gottigere, some pockets between Bannerghatta and Kanakpura Rd. Not going to suggest west Bangalore because that won't seem feasible at all. Or maybe all the way in Sarjapur, the end of Sarjapur Rd almost near TN border but thats literally rural Bangalore.
See if you can find ways to increase yoir budget or decide if you want to settle for what you get. Good luck