Woman and teen girl found dead in suburban home

A woman and a teenage girl have been found dead inside a home, with police forensics and detectives combing the scene.

Officers made the discovery on Thursday morning after attending a home at Marsfield in Sydney's northwest, on a report of concerns for welfare.

Forensic officers were seen carrying evidence bags on Thursday afternoon, stepping over police tape across the driveway of the two-storey brick home on Menzies Road.

Detective inspects crime scene where two bodies were found
Detectives are investigating the circumstances surrounding the deaths of two people found at a home. (Dan Himbrechts/AAP PHOTOS)

A swing set and netted trampoline could be seen in the home's front yard as detectives moved about the scene, one of them inspecting what appeared to be a surveillance camera.

The two people whose bodies were found inside the home are yet to be formally identified, but they are believed to be a woman in her 50s and a teenage girl.

A crime scene has been established in the quiet suburban area, with police awaiting a post-mortem examination as they investigate the deaths.

Lifeline 13 11 14

beyondblue 1300 22 4636