Hundreds of mourners have gathered in Manukau Memorial Gardens to farewell Trevor Hammond Waite, the man gunned down alongside Glenys Stanton early on Saturday.
The 51 year old, who is referred to in the order of service as "Trev", and Ms Stanton, 47, were shot multiple times in his Opaheke home. His daughter Kelsey, 18, found them on Sunday.
Mr Waite's flower-covered casket remained in a hearse outside the chapel while friends and families respectfully passed and filled the large room.
Dozens of people who could not fit into the chapel stood outside in the icy morning to hear the service.
The funeral director handed out an order of service with a picture of Mr Waite smiling on the front.
Inside is a poem, "The Measure of Man".
It read: "The measure of a man is determined not by his show of strength or the volume of his voice or the thunder of his actions or of his intellect or academic abilities.
"It is seen rather in terms of the love that he has for his family and for everyone, the strength of his commitments and the genuineness of his friendships, the sincerity of his purpose, the quiet courage of his convictions."
Media were asked to remain outside.
Ms Stanton's former boyfriend John Mowatt, 51, died in Woodhill Forrest near Helensville on Wednesday morning. Police had been trying to speak to him about the double murder. Officers found his body moments after hearing a gunshot.
