The 26-year-old’s unborn child, named Riley by family members, was delivered at the scene but died in hospital four days later.
The incident took place while Ms Fauvrelle’s family were at the home on Raymead Avenue. Relatives were alerted to the incident by the victim’s screams at around 3:30am.
He has since been charged with one count of possession of an offensive weapon on top of charges of murder and manslaughter, and will appear at Camberwell Green Magistrates’ Court on Monday.
Two men had previously been arrested on suspicion of murder in relation to the case.
One, a 37-year-old, was released with no further action. The second, 29, has been released on bail until early August.