Rocks appear to have been used to smash windows at four premises in Drouin early on Tuesday morning.
Ray White real estate, Drouin Primary School and Drouin Anglican Church, all in Princes Way, reported damage as well as Central Clinic in Commercial Pl.
Police said a large rock was thrown through the real estate front door window between 6.30pm on Monday and 8am on Tuesday.
The school valued damage at $1500 after two rocks were thrown through front windows of its administration building between 9pm and 7.30am.
The church reported a small hole in a window on the right side of the building, causing $1000 in damage. It occurred between 4.30pm and 12noon.
And, the medical clinic valued damage at $750 after a rock was thrown through a window on the northern side of the building between 6pm and 3am.