Police are searching for the missing husband of a woman found dead yesterday, and say they "hold concerns" for him.

Tammy Sindermann,43, was found dead by her daughter yesterday after she walked past a shed on her great-grandmother's property and saw her mother's body on the floor.

Police are now searching bushland around Wyee near Lake Macquarie for Ms Sindermann's husband, Darren Fishburn, 42.

The daughter had reportedly gone to the home because she was worried about her mother and great-grandmother.

Detectives will await the results of an autopsy today before confirming how Tammy Sindermann died.

The property belonged to Ms Sindermann's grandmother, Irma Sindermann, who lived in Greta, north-west of Newcastle, for more than 50 years, after spending time at nearby migrant camps. She was found unharmed inside the Wyndham Street property.

She was being cared for last night by the great-granddaughter who made the discovery.

Police were called to the property about 9.30am yesterday after reports a woman had been found hanging inside a shed.

But they discovered Tammy Sindermann's body on the floor of the shed and have since ruled out self-harm as the cause of her death.

Police would only confirm they were treating the death as suspicious, with Hunter Valley crime manager, Detective Inspector Trent King, saying they would await reports from forensic pathologists before confirming whether they were investigating a murder.

Strike Force Wintervale has been formed by local detectives and homicide squad investigators.

The Newcastle Herald understands that Ms Sindermann died on Monday night.

A relative said last night Ms Sindermann and her partner had been living with her grandmother at the property for the past two years.

Neighbours said they regularly saw and spoke to the couple living in the house.

Information should be forwarded to Hunter Valley detectives or Crime Stoppers on 1800 333 000

Newcastle Herald with smh.com.au