Police were called to a home in the affluent northern Sydney suburb of North Turramurra and found a 28-year-old man had allegedly been stabbed in the chest and stomach.

Emergency services also provided medical care to the 31-year-old host who had allegedly been stabbed in the leg.

Both alleged victims were taken to Royal North Shore Hospital to undergo surgery for non-life threatening injuries, police said.

A 30-year-old man, who sustained facial injuries during the party, was arrested over the alleged stabbings.

He was treated at the same hospital before being transferred to Chatswood Police Station.

The suspect was charged with reckless wounding, wounding a person with intent to cause grievous bodily harm and affray.

He was refused bail to appear before Hornsby Local Court on March 25.

Police said a crime scene had been established at the home on Somerset Avenue, North Turramurra and investigations were continuing.

Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000 or https://nsw.crimestoppers.com.au. Information is treated in strict confidence.