A mother is fighting for her life after an alleged domestic violence attack in Sydney.

Lauren Hopkins, 47, was attacked inside her home in Redfern, allegedly by her son, Mitchell Hopkins, 30.

Police and paramedics called to the 16th storey of the Morehead Street unit complex at 4.30pm yesterday.

The 47 year-old was unresponsive, suffering critical head injuries.

9News understands police will allege the mother was bashed inside the unit and no weapon was involved.

Mitchell Hopkins has been charged with causing grievous bodily harm with intent.

The 30-year-old appeared via video link as his matter was briefly mentioned at a Parramatta court.

He didn’t apply for bail.

He will now undergo a mental health assessment and remains behind bars, with his next court date set for July 10.