Bengaluru sky deck project: BDA finalises 46 acres in Kempegowda Layout and hires KPMG as transaction adviser for the 250-metre tower, estimated at Rs 600 crore. Bengaluru: The Bangalore Development Authority (BDA) has hired global consultancy KPMG as the transaction adviser for the proposed sky deck project and finalised 46 acres in Nadaprabhu Kempegowda Layout for building the city’s tallest tower. .