Tomerong Hall was broken into on Thursday afternoon, according to the hall's president, Robyn Sedger.
A member of the public reported the incident to Ms Sedger at about 5:30pm.
"It was more than just a broken window. Somebody had actually gained access to the hall.
"The kitchen window was completely smashed and also a glass window in the toilet block," she said.
Ms Sedger was grateful nothing was stolen but said the incident concerning as the hall will have to dip into funds depleted by COVID and the bushfires.
No witnesses have come forward but the matter is being investigated by the police.
Ms Sedger is urging anyone with information to contact Nowra Police on 4421 9699 or Crimestoppers on 1800 333 000.