The owner of the property declined to comment when contacted by the Herald yesterday.
A police command unit has been set up near the large farmhouse, with unmarked police cars coming and going.
Horses are in the front paddocks and across the road is Birchbrook Equestrian Centre.
Woodend Beach and its surrounds are popular areas 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.