Emergency operators got a call just before 8 a.m. Tuesday about the incident at 640 Castleberry Road.
Officers found three people dead from gunshots wounds inside the home. Although authorities have not released their names, they are identified as 50-year-old William House, 42-year-old Devinee House and 15-year-old Dakota Johnson.
Authorities say the oldest child found the bodies Tuesday morning and ran to tell an elderly man, who lives behind the home, and he called 911.
According Tammy Amaon, sheriff's office spokesperson, William shot his wife and his 15-year-old stepson before turning the gun on himself.
Three other children, ages 2, 7 and 8, were in the home at the time of the shooting, but they were not injured. They are now in the care of their grandmother.
Investigators say William and Devinee were going through a divorce and had a history of domestic issues. Deputies say they have responded to several domestic calls at the address in the past. The most recent call was three days ago. But they say none of the calls involved overt violence, drinking or drugs.
The husband lived in a building in the back of the main residence, while his wife and the children resided in the main house. Neighbors say he moved back there about six weeks ago.
Neighbors and friends say House and his wife were inseparable when they married about 10 years ago, but in the last year had grown apart.
"(Their arguing) was loud, it was loud," neighbor Chris Vanier said. "We'd heard it a couple times, but most recent was yesterday."
William House worked for the City of Raleigh in the Inspections Department.