The Brihanmumbai Municipal Corporation demolished illegal alterations and encroachments in eight flats in the B wing of Rustomjee Crown.
Civic officials had previously issued notices to 128 flats in the luxury residential project for encroaching on common areas.
Activist Santosh Daundkar alleged that residents enclosed common areas of up to 500 square feet, valued at Rs 2.5 crore per flat.