He will be escorted by two deputies and a sergeant and will be allowed to stay for the entire length of the service, Los Angeles County Sheriff's department spokesperson Steve Whitmore told Access.
In addition, Redmond will be permitted to wear a suit instead of his jail uniform. As for handcuffs, "that will be decided tomorrow," Whitmore added.
Funeral services for Farrah, who died on June 25 after a long battle with cancer, will be held on Tuesday at the Cathedral of Our Lady of the Angels, according to the Catholic Archdiocese of Los Angeles. The former "Charlie's Angels" star was 62,
Redmond, 24, is currently in a court-ordered rehab program at the Pitchess Detention Center in Castaic, Calif.
A spokesperson for the Los Angeles County Sheriff's department confirmed to Access Hollywood that the last time Redmond saw his mother prior to her death was during a court-approved three-hour visit on April 25.
The visit was documented in the late actress' recent NBC documentary, "Farrah's Story."
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PLAY IT NOW: Redmond O'Neal In Court (April 7, 2009)