Police were called to a property in Brentwood, Essex, on Sunday following concerns for the welfare of the 36-year-old mother and her child but they were both found dead.
Paramedics entered the property to find them and they were both pronounced dead at the scene shortly after 3.20pm on Sunday.
Police, who have remained at the scene since Sunday and upto this morning said their deaths are currently being treated as unexplained but not suspicious.
Their identities are yet to be released.
The East of England Ambulance Service has also been approached for comment.