It is thought Depardieu made the move to avoid new tax hikes on the wealthy brought in by the Socialist government.
Daniel Senesael, mayor of the village of Nechin, where the star has bought a house, revealed the purchase to French press on Sunday. He also suggested Depardieu was looking into applying for Belgian residency.
"I think he wanted to enjoy the atmosphere in Belgium, our identity, the rural, bucolic setting,” Senesael said on radio station RTL on Sunday.
Depardieu will be joining the likes of the Mulliez family, owners the national French supermarket chain Auchan, who also live in the same area.
Belgium does not have the same capital gains or wealth taxes, which in France applies to people with assets over €1.3 million.
The actor made headlines last week after being charged with driving while drunk on his scooter around Paris – his second drunk driving charge of the year.