Bhat, who is the chief whip of PDP in the Assembly, and his family were not present in the house at the time of the attack.
A large number of people attacked Bhat's house after police raided several houses in Meemandar locality late last night in search of youth, a police official said.
The locals put up a stiff resistance because of which the police party had to beat a hasty retreat, the official said, adding the mob subsequently attacked Bhat's house.
Kashmir has been on the boil since the killing of Hizbul Mujahideen militant commander Burhan Wani in an encounter on July 8.