Three family members of a 24-year-old man, whose body was found in a backyard grave at a Perth house, have faced court charged in connection with his alleged murder.

Matthew Fisher-Turner's remains were found at the family home in the southern suburb of Parmelia on Thursday, 10 days after he was reported missing to police on October 17.

His relatives told police they had not seen him since he left the Cromer Gardens house on October 1, without his vehicle or mobile phone.

Mr Fisher-Turner's father, 65-year-old Ernest Albert Fisher, appeared in Rockingham Magistrates Court charged with one count of murder.

His brother Joshua Douglas Fisher-Turner, 26, and his sister Hannah Jayde Fisher-Turner, 19, also appeared in court charged with being an accessory after the fact.

All three were remanded in custody to face Stirling Gardens Magistrates Court on November 30.

Police said the accused were all occupants of the family home.

"It was friends of Matthew that actually raised the alarm, they had been to the house and asked some questions and after a point they decided to contact police — it wasn't actually the family," Acting Detective Inspector Peter Clements said.

Major Crime Squad detectives searched the family home on Thursday and found Mr Fisher-Turner's body in what police described as a "clandestine grave".

Police allege he was murdered on October 1.