Perth billionaire Len Buckeridge, 77, has died on Tuesday morning at his Peppermint Grove home.

The billionaire businessman, was estimated to be worth $2.1 billion according to BRW, amassing his fortune from is Buckeridge Group of Companies, touted as Australia's largest home builder.

Len Buckeridge died at his home on Tuesday morning.

His sister Margaret Halcombe said her brother died of a heart attack.

Ms Halcombe told Fairfax Media that even though her brother had been unwell with heart and lung issues for years, his death had shocked her.