A couple and their children are believed to live at the address.
The owner of the property declined to comment when contacted by the Herald this morning.
A police command unit has been set up near the large farmhouse. Unmarked police cars are coming and going. Forensic officers will continue scene examinations at the property today.
Horses are in the front paddocks and across the road is Birchbrook Equestrian Centre.
Woodend Beach and its surrounds is a popular area for horse riders and trainers.
Locals are shocked by the homicide probe.
"They are a really nice family, well-involved in the community. It's just awful," one said.
Another reported having seen a lot of police activity down the quiet unpaved road on his way home from work last night.
"It's not what you expect to see. It kind of makes you feel sick," he said.