Police were called to a property in Maple Close at around 7.30pm on Monday, April 28, where they found Leon Anderson with stab wounds.
He was rushed to hospital but died from his injuries.
His next of kin are being supported by specialist officers.
Gambicky-Forbes was arrested after attending a south London police station on Tuesday, April 29.
Kemuel Gambicky-Forbes, 24, of Deer Park Gardens, has been charged with murder and possession of a bladed article following the death of Leon Anderson.
He is due to appear in custody at Wimbledon Magistrates’ Court on Thursday, May 1.