India, April 5 -- The Brihanmumbai Municipal Corporation (BMC) has slapped 200% property tax on 3,343 properties in the city and levied Rs.392.28 crore as penalty for unauthorised construction over the last year, official data shows.

The highest number of unauthorised constructions/ alterations recorded in the city between April 2024 and March 2025 were in the western suburbs, followed by the island city and the eastern suburbs. Ward-wise, violations were highest in H West ward, followed by G North and S ward. Only three properties in E ward were found to have illegal constructions/ alteration, the lowest in the city.

The ongoing drive against unauthorised constructions was initiated by Ashwini Joshi, additional municipal commissioner (...