NSW Police have won a battle in the Supreme Court to have restrictions placed on a Gypsy Joker bikie clubhouse, where club members allegedly had sexual intercourse with an alpaca.

The clubhouse, in the western Sydney suburb of Horsley Park, was at the centre of a court case in August after police said it was home to "indecent conduct and entertainment of a demoralising character", was used to unlawfully sell or supply alcohol, and has been attended by "reputed criminals" who are likely to attend again.

The Gypsy Joker clubhouse at Horsley Park has been declared a restricted premises. Credit:Fairfax Media

Acting Sergeant Nathan Trueman from Strike Force Raptor applied to have the "fortified" property declared a restricted premises, which means police can enter without a warrant to carry out searches for drugs, alcohol and weapons, and can seize anything which could be used to store, supply or consume liquor.

In an affidavit, he said "reputed criminals" and their associates continue to attend the premises, despite "a number of police operations".