A four-storey structure known as Gitanjali was shattered within Saibaba Nagar in Borivali west at 12.34 midnight on Friday.
The building was vacated since it was declared decrepit.
The fire department is on site of the collapse, to make sure that no one gets trapped in the wreckage.
At at least eight fire engines and two rescue vehicles and two fire trucks were on the scene.
After the building fell, many were also in the vicinity.
The complete scene of the building's collapse was also captured on the video.
One vehicle for quick response and three ambulances were dispatched at the location.
There are no injuries reported so far.