A four-storey residential building collapsed in Nalasopara area of Palghar district in Maharashtra in the wee hours of Wednesday, an official said.

There was no casualty, Vasai-Virar Municipal Corporation's chief fire officer Dileep Palav said. Nearly 23 members of five families residing in the building, located on Achole Road in Nallasopara, rushed out just in time before the structure collapsed around 1.30 am, the official said.